### Cancel Installment Plan Example

Source: https://useascend.readme.io/reference/cancelinstallmentplan

Example of how to cancel an installment plan using various programming languages.

```Shell
curl -X POST \
  https://sandbox.api.useascend.com/v1/installment_plans/{id}/cancel \
  -H 'Authorization: Bearer YOUR_API_KEY'
```

```Node
const axios = require('axios');

const cancelInstallmentPlan = async (planId, apiKey) => {
  try {
    const response = await axios.post(`https://sandbox.api.useascend.com/v1/installment_plans/${planId}/cancel`, {}, {
      headers: {
        'Authorization': `Bearer ${apiKey}`
      }
    });
    console.log('Installment plan cancelled:', response.data);
    return response.data;
  } catch (error) {
    console.error('Error cancelling installment plan:', error.response ? error.response.data : error.message);
    throw error;
  }
};

// Example usage:
// cancelInstallmentPlan('some-plan-id', 'YOUR_API_KEY');
```

```Ruby
require 'httparty'

class AscendAPI
  include HTTParty
  base_uri 'https://sandbox.api.useascend.com/v1'

  def initialize(api_key)
    @api_key = api_key
  end

  def cancel_installment_plan(plan_id)
    options = {
      headers: { 'Authorization' => "Bearer #{@api_key}" }
    }
    self.class.post("/installment_plans/#{plan_id}/cancel", options)
  end
end

# Example usage:
# api = AscendAPI.new('YOUR_API_KEY')
# response = api.cancel_installment_plan('some-plan-id')
# puts response.parsed_response
```

```PHP
<?php

function cancelInstallmentPlan($planId, $apiKey) {
    $url = 'https://sandbox.api.useascend.com/v1/installment_plans/' . $planId . '/cancel';
    $headers = [
        'Authorization: Bearer ' . $apiKey
    ];

    $ch = curl_init($url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'POST');
    curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);

    $response = curl_exec($ch);
    $httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);

    if (curl_errno($ch)) {
        echo 'Curl error: ' . curl_error($ch);
    }
    curl_close($ch);

    if ($httpCode >= 200 && $httpCode < 300) {
        return json_decode($response, true);
    } else {
        echo 'Error: ' . $response;
        return null;
    }
}

// Example usage:
// $apiKey = 'YOUR_API_KEY';
// $planId = 'some-plan-id';
// $result = cancelInstallmentPlan($planId, $apiKey);
// print_r($result);
?>
```

```Python
import requests

def cancel_installment_plan(plan_id, api_key):
    url = f"https://sandbox.api.useascend.com/v1/installment_plans/{plan_id}/cancel"
    headers = {
        "Authorization": f"Bearer {api_key}"
    }
    try:
        response = requests.post(url, headers=headers)
        response.raise_for_status()  # Raise an exception for bad status codes
        return response.json()
    except requests.exceptions.RequestException as e:
        print(f"Error cancelling installment plan: {e}")
        return None

# Example usage:
# api_key = 'YOUR_API_KEY'
# plan_id = 'some-plan-id'
# result = cancel_installment_plan(plan_id, api_key)
# print(result)
```

--------------------------------

### Create a Return Example

Source: https://useascend.readme.io/reference/post_v1-installment-plans-installment-plan-id-returns

Example of how to create a return for an installment plan. Supports multiple client languages for integration.

```Shell
curl -X POST \
  https://sandbox.api.useascend.com/v1/installment_plans/{installment_plan_id}/returns \
  -H 'Authorization: Bearer YOUR_API_KEY' \
  -H 'Content-Type: application/json'
```

```Node
const axios = require('axios');

const createReturn = async (installmentPlanId, apiKey) => {
  try {
    const response = await axios.post(`https://sandbox.api.useascend.com/v1/installment_plans/${installmentPlanId}/returns`, {}, {
      headers: {
        'Authorization': `Bearer ${apiKey}`
      }
    });
    return response.data;
  } catch (error) {
    console.error('Error creating return:', error);
    throw error;
  }
};
```

```Ruby
require 'httparty'

class AscendAPI
  include HTTParty
  base_uri 'https://sandbox.api.useascend.com/v1'

  def initialize(api_key)
    @api_key = api_key
  end

  def create_installment_plan_return(installment_plan_id)
    self.class.post("/installment_plans/#{installment_plan_id}/returns", headers: { 'Authorization' => "Bearer #{@api_key}" })
  end
end

# Usage:
# api = AscendAPI.new('YOUR_API_KEY')
# response = api.create_installment_plan_return('some_plan_id')
```

```PHP
<?php

function createInstallmentPlanReturn($installmentPlanId, $apiKey) {
    $url = "https://sandbox.api.useascend.com/v1/installment_plans/{$installmentPlanId}/returns";
    $headers = [
        'Authorization: Bearer ' . $apiKey,
        'Content-Type: application/json'
    ];

    $ch = curl_init($url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_POST, true);
    curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);

    $response = curl_exec($ch);
    if (curl_errno($ch)) {
        echo 'Curl error: ' . curl_error($ch);
    }
    curl_close($ch);
    return json_decode($response, true);
}

// Usage:
// $apiKey = 'YOUR_API_KEY';
// $planId = 'some_plan_id';
// $result = createInstallmentPlanReturn($planId, $apiKey);
// print_r($result);
?>
```

```Python
import requests

def create_installment_plan_return(installment_plan_id, api_key):
    url = f"https://sandbox.api.useascend.com/v1/installment_plans/{installment_plan_id}/returns"
    headers = {
        "Authorization": f"Bearer {api_key}",
        "Content-Type": "application/json"
    }
    response = requests.post(url, headers=headers)
    response.raise_for_status() # Raise an exception for bad status codes
    return response.json()

# Usage:
# api_key = 'YOUR_API_KEY'
# plan_id = 'some_plan_id'
# result = create_installment_plan_return(plan_id, api_key)
# print(result)
```

--------------------------------

### Get Program Example

Source: https://useascend.readme.io/reference/getprogram

Demonstrates how to retrieve program details using the UseAscend API. Includes examples for various programming languages and shell.

```APIDOC
GET /v1/programs/{id}

Retrieves a specific program by its ID.

Parameters:
  - id (string, required): The unique identifier for the program.

Base URL:
  https://sandbox.api.useascend.com/v1/

Authentication:
  Bearer token

Example Request:
  GET https://sandbox.api.useascend.com/v1/programs/your_program_id

Response:
  Details of the program, including its configuration and associated data.
```

```Shell
curl -X GET \
  'https://sandbox.api.useascend.com/v1/programs/your_program_id' \
  -H 'Authorization: Bearer YOUR_API_TOKEN'
```

```Node
const axios = require('axios');

const getProgram = async (programId, token) => {
  try {
    const response = await axios.get(`https://sandbox.api.useascend.com/v1/programs/${programId}`, {
      headers: {
        'Authorization': `Bearer ${token}`
      }
    });
    return response.data;
  } catch (error) {
    console.error('Error fetching program:', error);
    throw error;
  }
};

// Example usage:
// getProgram('your_program_id', 'YOUR_API_TOKEN').then(data => console.log(data));
```

```Ruby
require 'httparty'

url = 'https://sandbox.api.useascend.com/v1/programs/your_program_id'
headers = { 'Authorization' => 'Bearer YOUR_API_TOKEN' }

response = HTTParty.get(url, headers: headers)

if response.success?
  puts response.parsed_response
else
  puts "Error: #{response.code} - #{response.message}"
end
```

```PHP
$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, 'https://sandbox.api.useascend.com/v1/programs/your_program_id');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'GET');
curl_setopt($ch, CURLOPT_HTTPHEADER, array(
  'Authorization: Bearer YOUR_API_TOKEN'
));

$response = curl_exec($ch);

if (curl_errno($ch)) {
    echo 'Error:' . curl_error($ch);
} else {
    echo $response;
}

curl_close($ch);
```

```Python
import requests

url = "https://sandbox.api.useascend.com/v1/programs/your_program_id"
headers = {
    "Authorization": "Bearer YOUR_API_TOKEN"
}

response = requests.get(url, headers=headers)

if response.status_code == 200:
    print(response.json())
else:
    print(f"Error: {response.status_code} - {response.text}")
```

--------------------------------

### Create Installment Plan Example

Source: https://useascend.readme.io/reference/post_v1-installment-plans

Demonstrates how to create an installment plan using the Ascend API. Includes details on the endpoint, HTTP method, and supported languages for integration.

```Shell
curl -X POST \
  https://sandbox.api.useascend.com/v1/installment_plans \
  -H 'Authorization: Bearer YOUR_API_KEY'
```

```Node
const axios = require('axios');

const createInstallmentPlan = async () => {
  try {
    const response = await axios.post('https://sandbox.api.useascend.com/v1/installment_plans', {}, {
      headers: {
        'Authorization': 'Bearer YOUR_API_KEY'
      }
    });
    console.log('Installment plan created:', response.data);
  } catch (error) {
    console.error('Error creating installment plan:', error);
  }
};

createInstallmentPlan();
```

```Ruby
require 'httparty'

url = 'https://sandbox.api.useascend.com/v1/installment_plans'
headers = { 'Authorization' => 'Bearer YOUR_API_KEY' }

response = HTTParty.post(url, headers: headers)

if response.success?
  puts "Installment plan created: #{response.parsed_response}"
else
  puts "Error creating installment plan: #{response.code} - #{response.message}"
end
```

```PHP
<?php

$url = 'https://sandbox.api.useascend.com/v1/installment_plans';
$headers = [
    'Authorization: Bearer YOUR_API_KEY'
];

$ch = curl_init($url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);

$response = curl_exec($ch);

if ($response === false) {
    echo 'Curl error: ' . curl_error($ch);
} else {
    echo 'Installment plan created: ' . $response;
}

curl_close($ch);
?>
```

```Python
import requests

url = 'https://sandbox.api.useascend.com/v1/installment_plans'
headers = {
    'Authorization': 'Bearer YOUR_API_KEY'
}

try:
    response = requests.post(url, headers=headers)
    response.raise_for_status()  # Raise an exception for bad status codes
    print(f'Installment plan created: {response.json()}')
except requests.exceptions.RequestException as e:
    print(f'Error creating installment plan: {e}')
```

--------------------------------

### Get Installment Plan Example

Source: https://useascend.readme.io/reference/installmentplans

Demonstrates how to retrieve a specific installment plan using its ID. Includes examples in multiple languages.

```Shell
curl -X GET \
  https://sandbox.api.useascend.com/v1/installment_plans/{id} \
  -H 'Authorization: Bearer YOUR_ACCESS_TOKEN'
```

```Node
const axios = require('axios');

const getInstallmentPlan = async (id, token) => {
  try {
    const response = await axios.get(`https://sandbox.api.useascend.com/v1/installment_plans/${id}`, {
      headers: {
        'Authorization': `Bearer ${token}`
      }
    });
    return response.data;
  } catch (error) {
    console.error('Error fetching installment plan:', error);
    throw error;
  }
};
```

```Ruby
require 'httparty'

url = 'https://sandbox.api.useascend.com/v1/installment_plans/' + id
headers = { 'Authorization' => 'Bearer YOUR_ACCESS_TOKEN' }

response = HTTParty.get(url, headers: headers)
puts response.body
```

```PHP
$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, 'https://sandbox.api.useascend.com/v1/installment_plans/' . $id);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'GET');
curl_setopt($ch, CURLOPT_HTTPHEADER, array(
    'Authorization: Bearer YOUR_ACCESS_TOKEN'
));

$response = curl_exec($ch);

if (curl_errno($ch)) {
    echo 'Error:' . curl_error($ch);
}
curl_close($ch);

echo $response;
```

```Python
import requests

url = f"https://sandbox.api.useascend.com/v1/installment_plans/{id}"
headers = {
    'Authorization': 'Bearer YOUR_ACCESS_TOKEN'
}

response = requests.get(url, headers=headers)
print(response.json())
```

--------------------------------

### Get User Example

Source: https://useascend.readme.io/reference/getuser

Demonstrates how to retrieve a specific user using the API. Includes example URLs and language options for implementation.

```APIDOC
Get User:
  Method: GET
  URL: https://sandbox.api.useascend.com/v1/users/{id}
  Authentication: Bearer Token
  Parameters:
    - id: The unique identifier of the user to retrieve.
  Response:
    (Details available via 'Try It!' functionality in the original interface)
```

```Shell
curl -X GET \
  https://sandbox.api.useascend.com/v1/users/{id} \
  -H 'Authorization: Bearer YOUR_ACCESS_TOKEN'
```

```Node
const axios = require('axios');

const userId = 'some-user-id';
const accessToken = 'YOUR_ACCESS_TOKEN';

axios.get(`https://sandbox.api.useascend.com/v1/users/${userId}`, {
  headers: {
    'Authorization': `Bearer ${accessToken}`
  }
})
.then(response => {
  console.log(response.data);
})
.catch(error => {
  console.error('Error fetching user:', error);
});
```

```Python
import requests

user_id = 'some-user-id'
access_token = 'YOUR_ACCESS_TOKEN'

headers = {
    'Authorization': f'Bearer {access_token}'
}

response = requests.get(f'https://sandbox.api.useascend.com/v1/users/{user_id}', headers=headers)

if response.status_code == 200:
    print(response.json())
else:
    print(f'Error fetching user: {response.status_code} - {response.text}')
```

```Ruby
require 'httparty'

user_id = 'some-user-id'
access_token = 'YOUR_ACCESS_TOKEN'

response = HTTParty.get("https://sandbox.api.useascend.com/v1/users/#{user_id}",
  headers: { 'Authorization' => "Bearer #{access_token}" })

puts response.body
```

```PHP
$userId = 'some-user-id';
$accessToken = 'YOUR_ACCESS_TOKEN';

$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, "https://sandbox.api.useascend.com/v1/users/{$userId}");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'GET');

$headers = array(
  'Authorization: Bearer ' . $accessToken
);
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);

$response = curl_exec($ch);

if (curl_errno($ch)) {
    echo 'Error:' . curl_error($ch);
} else {
    echo $response;
}

curl_close($ch);
```

--------------------------------

### Get Contact Example

Source: https://useascend.readme.io/reference/get_v1-contacts-id

Example of how to retrieve contact information using the UseAscend API.

```Shell
curl -X GET \
  https://sandbox.api.useascend.com/v1/contacts/{id} \
  -H 'Authorization: Bearer YOUR_API_KEY'
```

```Node
const axios = require('axios');

const getContact = async (contactId, apiKey) => {
  try {
    const response = await axios.get(`https://sandbox.api.useascend.com/v1/contacts/${contactId}`, {
      headers: {
        'Authorization': `Bearer ${apiKey}`
      }
    });
    return response.data;
  } catch (error) {
    console.error('Error fetching contact:', error);
    throw error;
  }
};

// Example usage:
// getContact('some-contact-id', 'YOUR_API_KEY').then(data => console.log(data));
```

```Ruby
require 'httparty'

url = 'https://sandbox.api.useascend.com/v1/contacts/{id}'
api_key = 'YOUR_API_KEY'

response = HTTParty.get(url, headers: { 'Authorization' => "Bearer #{api_key}" })

if response.success?
  puts response.parsed_response
else
  puts "Error: #{response.code} - #{response.message}"
end
```

```PHP
<?php

$contactId = 'some-contact-id';
$apiKey = 'YOUR_API_KEY';

$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, "https://sandbox.api.useascend.com/v1/contacts/{$contactId}");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'GET');
curl_setopt($ch, CURLOPT_HTTPHEADER, array(
    'Authorization: Bearer ' . $apiKey
));

$response = curl_exec($ch);

if (curl_errno($ch)) {
    echo 'Error:' . curl_error($ch);
} else {
    echo $response;
}

curl_close($ch);
?>
```

```Python
import requests

url = "https://sandbox.api.useascend.com/v1/contacts/{id}"
api_key = "YOUR_API_KEY"

headers = {
    "Authorization": f"Bearer {api_key}"
}

try:
    response = requests.get(url, headers=headers)
    response.raise_for_status()  # Raise an exception for bad status codes
    print(response.json())
except requests.exceptions.RequestException as e:
    print(f"Error: {e}")
```

--------------------------------

### Express.js Webhook Listener Example

Source: https://useascend.readme.io/docs/webhooks

A complete example of an Express.js application middleware to listen for, parse, and verify Ascend webhook requests. It includes body parsing, signature verification, and response handling.

```JavaScript
app.use((req, res, next) => {
  // Do not use the webhook parser for the webhook route
  if (req.originalUrl === '/webhook-listener') {
    next();
  } else {
    bodyParser.json()(req, res, next);
  }
});

app.post(
  '/webhook-listener',
  bodyParser.raw({ type: 'application/json' }),
  (req, res) => {
    const requestBody = req.body;
    const requestTimestamp = req.header("X-Ascend-Request-Timestamp")
    const requestSignature = req.header("X-Ascend-Signature")

    const hmac = crypto.createHmac('sha256', SECRET)
        .update(`${requestTimestamp}:${requestBody}`)
        .digest('hex');

    const expectedSignature = `t=${requestTimestamp},v1=${hmac}`

    const event = JSON.parse(requestBody);

    if (requestSignature == expectedSignature) {
      res.status(200).send('success!');
    } else {
      res.status(500).send('error!')
    }
  }
)
```

--------------------------------

### Get Billable Example

Source: https://useascend.readme.io/reference/getbillable

Demonstrates how to retrieve a specific billable item using the UseAscend API. This example shows the request structure and common language implementations.

```APIDOC
GET https://sandbox.api.useascend.com/v1/billables/{id}

Description:
  Retrieves a specific billable item by its ID.

Parameters:
  - id (path parameter): The unique identifier for the billable item.

Authentication:
  - Bearer Token

Response:
  - Returns the billable item details upon success.
```

```Shell
curl -X GET \
  https://sandbox.api.useascend.com/v1/billables/{id} \
  -H 'Authorization: Bearer YOUR_API_KEY'
```

```Node.js
const axios = require('axios');

const getBillable = async (id, apiKey) => {
  try {
    const response = await axios.get(`https://sandbox.api.useascend.com/v1/billables/${id}`, {
      headers: {
        'Authorization': `Bearer ${apiKey}`
      }
    });
    return response.data;
  } catch (error) {
    console.error('Error fetching billable:', error);
    throw error;
  }
};

// Example usage:
// getBillable('billable_id', 'YOUR_API_KEY').then(data => console.log(data));
```

```Ruby
require 'httparty'

url = 'https://sandbox.api.useascend.com/v1/billables/'

HTTParty.get(url + 'billable_id', headers: { 'Authorization' => 'Bearer YOUR_API_KEY' })
```

```PHP
$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, 'https://sandbox.api.useascend.com/v1/billables/billable_id');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'GET');
curl_setopt($ch, CURLOPT_HTTPHEADER, array(
    'Authorization: Bearer YOUR_API_KEY'
));

$response = curl_exec($ch);

if (curl_errno($ch)) {
    echo 'Error:' . curl_error($ch);
}
curl_close($ch);

echo $response;
```

```Python
import requests

url = "https://sandbox.api.useascend.com/v1/billables/billable_id"
headers = {
    "Authorization": "Bearer YOUR_API_KEY"
}

response = requests.get(url, headers=headers)

if response.status_code == 200:
    print(response.json())
else:
    print(f"Error: {response.status_code}")
```

--------------------------------

### Create Program Example

Source: https://useascend.readme.io/reference/createprogram

Demonstrates how to create a new program using the UseAscend API. Includes examples for common programming languages and shell.

```Shell
curl -X POST \
  https://sandbox.api.useascend.com/v1/programs \
  -H 'Authorization: Bearer YOUR_API_KEY'
```

```Node.js
const axios = require('axios');

const createProgram = async () => {
  try {
    const response = await axios.post('https://sandbox.api.useascend.com/v1/programs', {}, {
      headers: {
        'Authorization': 'Bearer YOUR_API_KEY'
      }
    });
    console.log('Program created:', response.data);
  } catch (error) {
    console.error('Error creating program:', error.response.data);
  }
};

createProgram();
```

```Ruby
require 'httparty'

response = HTTParty.post('https://sandbox.api.useascend.com/v1/programs', headers: { 'Authorization' => 'Bearer YOUR_API_KEY' })

if response.success?
  puts "Program created: #{response.parsed_response}"
else
  puts "Error creating program: #{response.parsed_response}"
end
```

```PHP
<?php
$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, 'https://sandbox.api.useascend.com/v1/programs');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_POST, 1);

$headers = [
    'Authorization: Bearer YOUR_API_KEY'
];
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);

$response = curl_exec($ch);

if (curl_errno($ch)) {
    echo 'Error:' . curl_error($ch);
} else {
    echo 'Program created: ' . $response;
}

curl_close($ch);
?>
```

```Python
import requests

url = "https://sandbox.api.useascend.com/v1/programs"
headers = {
    "Authorization": "Bearer YOUR_API_KEY"
}

try:
    response = requests.post(url, headers=headers)
    response.raise_for_status() # Raise an exception for bad status codes
    print(f"Program created: {response.json()}")
except requests.exceptions.RequestException as e:
    print(f"Error creating program: {e}")
```

--------------------------------

### Get Installment Plan Example

Source: https://useascend.readme.io/reference/get_v1-installment-plans-id

Demonstrates how to retrieve a specific installment plan using its ID. Includes examples in multiple languages.

```Shell
curl -X GET \
  https://sandbox.api.useascend.com/v1/installment_plans/{id} \
  -H 'Authorization: Bearer YOUR_ACCESS_TOKEN'
```

```Node
const axios = require('axios');

const getInstallmentPlan = async (id, token) => {
  try {
    const response = await axios.get(`https://sandbox.api.useascend.com/v1/installment_plans/${id}`, {
      headers: {
        'Authorization': `Bearer ${token}`
      }
    });
    return response.data;
  } catch (error) {
    console.error('Error fetching installment plan:', error);
    throw error;
  }
};
```

```Ruby
require 'httparty'

url = 'https://sandbox.api.useascend.com/v1/installment_plans/' + id
headers = { 'Authorization' => 'Bearer YOUR_ACCESS_TOKEN' }

response = HTTParty.get(url, headers: headers)
puts response.body
```

```PHP
$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, 'https://sandbox.api.useascend.com/v1/installment_plans/' . $id);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'GET');
curl_setopt($ch, CURLOPT_HTTPHEADER, array(
    'Authorization: Bearer YOUR_ACCESS_TOKEN'
));

$response = curl_exec($ch);

if (curl_errno($ch)) {
    echo 'Error:' . curl_error($ch);
}
curl_close($ch);

echo $response;
```

```Python
import requests

url = f"https://sandbox.api.useascend.com/v1/installment_plans/{id}"
headers = {
    'Authorization': 'Bearer YOUR_ACCESS_TOKEN'
}

response = requests.get(url, headers=headers)
print(response.json())
```

--------------------------------

### List Programs Example

Source: https://useascend.readme.io/reference/listprograms

Demonstrates how to list programs using the UseAscend API. Includes example configurations for different languages.

```APIDOC
Endpoint: GET https://sandbox.api.useascend.com/v1/programs

Description:
  Retrieves a list of programs.

Authentication:
  Bearer Token

Base URL:
  https://sandbox.api.useascend.com/v1/programs

Example Usage:
  This section provides examples for making the GET request in various languages.
  (Actual code examples for each language are not provided in the source text, only the intent is mentioned.)
```

```Shell
curl -X GET \
  https://sandbox.api.useascend.com/v1/programs \
  -H 'Authorization: Bearer YOUR_ACCESS_TOKEN'
```

```Node
// Example using fetch API in Node.js
fetch('https://sandbox.api.useascend.com/v1/programs', {
  method: 'GET',
  headers: {
    'Authorization': 'Bearer YOUR_ACCESS_TOKEN'
  }
})
.then(response => response.json())
.then(data => console.log(data))
.catch(error => console.error('Error:', error));
```

```Ruby
# Example using Net::HTTP in Ruby
require 'net/http'
require 'uri'

uri = URI.parse('https://sandbox.api.useascend.com/v1/programs')
http = Net::HTTP.new(uri.host, uri.port)
http.use_ssl = true

request = Net::HTTP::Get.new(uri.request_uri)
request['Authorization'] = 'Bearer YOUR_ACCESS_TOKEN'

response = http.request(request)
puts response.body
```

```PHP
// Example using cURL in PHP
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, 'https://sandbox.api.useascend.com/v1/programs');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_HTTPHEADER, array(
    'Authorization: Bearer YOUR_ACCESS_TOKEN'
));
$response = curl_exec($ch);
curl_close($ch);
echo $response;
```

```Python
# Example using requests library in Python
import requests

url = 'https://sandbox.api.useascend.com/v1/programs'
headers = {
    'Authorization': 'Bearer YOUR_ACCESS_TOKEN'
}

response = requests.get(url, headers=headers)
print(response.json())
```

--------------------------------

### List Loans Example

Source: https://useascend.readme.io/reference/listloans

Example of how to list loans using the API.

```Shell
curl -X GET \
  https://sandbox.api.useascend.com/v1/loans \
  -H 'Authorization: Bearer YOUR_API_KEY'
```

```Node
const axios = require('axios');

axios.get('https://sandbox.api.useascend.com/v1/loans', {
  headers: {
    'Authorization': 'Bearer YOUR_API_KEY'
  }
})
.then(response => {
  console.log(response.data);
})
.catch(error => {
  console.error(error);
});
```

```Ruby
require 'httparty'

response = HTTParty.get('https://sandbox.api.useascend.com/v1/loans', headers: { 'Authorization' => 'Bearer YOUR_API_KEY' })
puts response.body
```

```PHP
$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, 'https://sandbox.api.useascend.com/v1/loans');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'GET');
curl_setopt($ch, CURLOPT_HTTPHEADER, array('Authorization: Bearer YOUR_API_KEY'));

$response = curl_exec($ch);

if (curl_errno($ch)) {
    echo 'Error:' . curl_error($ch);
}
curl_close($ch);

echo $response;
```

```Python
import requests

url = "https://sandbox.api.useascend.com/v1/loans"
headers = {
    'Authorization': 'Bearer YOUR_API_KEY'
}

response = requests.get(url, headers=headers)
print(response.json())
```

--------------------------------

### Installments API

Source: https://useascend.readme.io/reference/delete_v1-installment-plans-installment-plan-id-returns-return-id

Retrieve and update installment details. Supports GET and PATCH methods for managing individual installments.

```APIDOC
Installments:
  - GET /v1/installments/{id}: Get installment details.
  - PATCH /v1/installments/{id}: Update installment details.
```

--------------------------------

### Installments API Operations

Source: https://useascend.readme.io/reference/notifyinsuredinvoice

Manage individual installments, including retrieval and updates. Supports GET and PATCH methods for installment management.

```APIDOC
## Installments

*   **Get Installment**: `GET /v1/installments/{id}`
    *   Retrieves details of a specific installment.
*   **Update Installment**: `PATCH /v1/installments/{id}`
    *   Updates an existing installment.
```

--------------------------------

### Create User Example

Source: https://useascend.readme.io/reference/createuser

Demonstrates how to create a new user using the Ascend API with various programming languages.

```Shell
curl -X POST \
  https://sandbox.api.useascend.com/v1/users \
  -H 'Authorization: Bearer YOUR_API_KEY' \
  -H 'Content-Type: application/json' \
  -d '{ "firstName": "John", "lastName": "Doe", "email": "john.doe@example.com" }'
```

```Node
const axios = require('axios');

const createUser = async () => {
  try {
    const response = await axios.post('https://sandbox.api.useascend.com/v1/users', {
      firstName: 'John',
      lastName: 'Doe',
      email: 'john.doe@example.com'
    }, {
      headers: {
        'Authorization': 'Bearer YOUR_API_KEY',
        'Content-Type': 'application/json'
      }
    });
    console.log('User created:', response.data);
  } catch (error) {
    console.error('Error creating user:', error.response.data);
  }
};

createUser();
```

```Ruby
require 'httparty'

response = HTTParty.post('https://sandbox.api.useascend.com/v1/users', 
  body: { firstName: 'John', lastName: 'Doe', email: 'john.doe@example.com' }.to_json, 
  headers: { 
    'Authorization' => 'Bearer YOUR_API_KEY', 
    'Content-Type' => 'application/json' 
  }
)

puts response.body
```

```PHP
<?php

$data = json_encode([
    'firstName' => 'John',
    'lastName' => 'Doe',
    'email' => 'john.doe@example.com'
]);

$ch = curl_init('https://sandbox.api.useascend.com/v1/users');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
curl_setopt($ch, CURLOPT_HTTPHEADER, [
    'Authorization: Bearer YOUR_API_KEY',
    'Content-Type: application/json'
]);

$response = curl_exec($ch);

if (curl_errno($ch)) {
    echo 'Curl error: ' . curl_error($ch);
} else {
    echo $response;
}

c_close($ch);
?>
```

```Python
import requests

url = "https://sandbox.api.useascend.com/v1/users"
headers = {
    "Authorization": "Bearer YOUR_API_KEY",
    "Content-Type": "application/json"
}
payload = {
    "firstName": "John",
    "lastName": "Doe",
    "email": "john.doe@example.com"
}

response = requests.post(url, json=payload, headers=headers)

print(response.json())
```

--------------------------------

### Installments API

Source: https://useascend.readme.io/reference/getuser

Manages individual installments, allowing retrieval and updates. Supports GET and PATCH methods for installment operations.

```APIDOC
Installments:
  GET /v1/installments/{id}
    Retrieves a specific installment.
    Parameters:
      - id: The unique identifier of the installment.

  PATCH /v1/installments/{id}
    Updates an existing installment.
    Parameters:
      - id: The unique identifier of the installment.
      - (Request Body): Updated installment details.
```

--------------------------------

### Ascend API: Installments

Source: https://useascend.readme.io/reference/deleteinsured

Retrieve and update individual installment details. Supports GET and PATCH methods for managing installment records.

```APIDOC
Installments:
  - Get installment: GET /reference/get_v1-installments-id
  - Update installment: PATCH /reference/patch_v1-installments-id
```

--------------------------------

### Steps to Create Checkout Session

Source: https://useascend.readme.io/docs/lightweight-integration

A step-by-step guide to creating a checkout session, involving creating an insured, a program, and billables, then using the program URL for the checkout process.

```APIDOC
1. Create Insured:
   POST /insured
   - Requires necessary insured details.
   - Returns `insured.id`.

2. Create Program:
   POST /program
   - Requires `insured.id` and other program details.
   - Parameters:
     - `return_url`: URL for user exit behavior.
     - `success_callback_url`: URL for redirect post-successful checkout.
   - Returns `program.id` and `program_url`.

3. Create Billable(s):
   POST /billable
   - Create one or more billables using `program_id`.
   - Requires `wholesaler_id` and `carrier_id` (obtained from mapping step).

4. Initiate Checkout:
   - Use the `program_url` obtained in step 2 as the session URL for your CTA/button.
```

--------------------------------

### List Users Example

Source: https://useascend.readme.io/reference/listusers

Example of how to list users using different programming languages.

```Shell
curl -X GET \
  https://sandbox.api.useascend.com/v1/users \
  -H 'Authorization: Bearer YOUR_API_KEY'
```

```Node
const axios = require('axios');

axios.get('https://sandbox.api.useascend.com/v1/users', {
  headers: {
    'Authorization': 'Bearer YOUR_API_KEY'
  }
})
.then(response => {
  console.log(response.data);
})
.catch(error => {
  console.error(error);
});
```

```Ruby
require 'httparty'

response = HTTParty.get('https://sandbox.api.useascend.com/v1/users', headers: { 'Authorization' => 'Bearer YOUR_API_KEY' })
puts response.body
```

```PHP
$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, 'https://sandbox.api.useascend.com/v1/users');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'GET');
curl_setopt($ch, CURLOPT_HTTPHEADER, array('Authorization: Bearer YOUR_API_KEY'));

$response = curl_exec($ch);

if (curl_errno($ch)) {
    echo 'Error:' . curl_error($ch);
}
curl_close($ch);

echo $response;
```

```Python
import requests

url = "https://sandbox.api.useascend.com/v1/users"
headers = {
    "Authorization": "Bearer YOUR_API_KEY"
}

response = requests.get(url, headers=headers)
print(response.json())
```

--------------------------------

### Get Account Example

Source: https://useascend.readme.io/reference/get_v1-accounts-id

Example of how to retrieve a specific account using the API.

```Shell
curl -X GET \
  https://sandbox.api.useascend.com/v1/accounts/{id} \
  -H 'Authorization: Bearer YOUR_ACCESS_TOKEN'
```

```Node
const axios = require('axios');

const getAccount = async (accountId, accessToken) => {
  try {
    const response = await axios.get(`https://sandbox.api.useascend.com/v1/accounts/${accountId}`, {
      headers: {
        'Authorization': `Bearer ${accessToken}`
      }
    });
    return response.data;
  } catch (error) {
    console.error('Error fetching account:', error);
    throw error;
  }
};

// Example usage:
// getAccount('some-account-id', 'YOUR_ACCESS_TOKEN').then(data => console.log(data));
```

```Ruby
require 'httparty'

url = 'https://sandbox.api.useascend.com/v1/accounts/{id}'
access_token = 'YOUR_ACCESS_TOKEN'

response = HTTParty.get(url, headers: { 'Authorization' => "Bearer #{access_token}" })

if response.success?
  puts response.parsed_response
else
  puts "Error: #{response.code} - #{response.message}"
end
```

```PHP
<?php

$accountId = 'some-account-id';
$accessToken = 'YOUR_ACCESS_TOKEN';

$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, "https://sandbox.api.useascend.com/v1/accounts/{$accountId}");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'GET');
curl_setopt($ch, CURLOPT_HTTPHEADER, array(
    'Authorization: Bearer ' . $accessToken
));

$response = curl_exec($ch);

if (curl_errno($ch)) {
    echo 'Error:' . curl_error($ch);
} else {
    echo $response;
}

curl_close($ch);
?>
```

```Python
import requests

account_id = 'some-account-id'
access_token = 'YOUR_ACCESS_TOKEN'

url = f'https://sandbox.api.useascend.com/v1/accounts/{account_id}'
headers = {
    'Authorization': f'Bearer {access_token}'
}

try:
    response = requests.get(url, headers=headers)
    response.raise_for_status()  # Raise an exception for bad status codes
    print(response.json())
except requests.exceptions.RequestException as e:
    print(f'Error fetching account: {e}')
```

--------------------------------

### List Users Example

Source: https://useascend.readme.io/reference/users

Example of how to list users using different programming languages.

```Shell
curl -X GET \
  https://sandbox.api.useascend.com/v1/users \
  -H 'Authorization: Bearer YOUR_API_KEY'
```

```Node
const axios = require('axios');

axios.get('https://sandbox.api.useascend.com/v1/users', {
  headers: {
    'Authorization': 'Bearer YOUR_API_KEY'
  }
})
.then(response => {
  console.log(response.data);
})
.catch(error => {
  console.error(error);
});
```

```Ruby
require 'httparty'

response = HTTParty.get('https://sandbox.api.useascend.com/v1/users', headers: { 'Authorization' => 'Bearer YOUR_API_KEY' })
puts response.body
```

```PHP
$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, 'https://sandbox.api.useascend.com/v1/users');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'GET');
curl_setopt($ch, CURLOPT_HTTPHEADER, array('Authorization: Bearer YOUR_API_KEY'));

$response = curl_exec($ch);

if (curl_errno($ch)) {
    echo 'Error:' . curl_error($ch);
}
curl_close($ch);

echo $response;
```

```Python
import requests

url = "https://sandbox.api.useascend.com/v1/users"
headers = {
    "Authorization": "Bearer YOUR_API_KEY"
}

response = requests.get(url, headers=headers)
print(response.json())
```

--------------------------------

### Get Insured Endpoint Example

Source: https://useascend.readme.io/reference/getinsured

Example of how to retrieve a specific insured entity using its ID.

```APIDOC
Endpoint: Get Insured

Method: GET
URL: https://sandbox.api.useascend.com/v1/insureds/{id}

Description: Retrieves details for a specific insured entity.

Parameters:
  - id (path parameter): The unique identifier of the insured.

Authentication:
  - Bearer Token

Example Request:
GET https://sandbox.api.useascend.com/v1/insureds/123e4567-e89b-12d3-a456-426614174000
Authorization: Bearer YOUR_API_KEY
```

--------------------------------

### Create Billable Example

Source: https://useascend.readme.io/reference/createbillable

Example of how to create a billable item using the UseAscend API.

```Shell
curl -X POST \
  https://sandbox.api.useascend.com/v1/billables \
  -H 'Authorization: Bearer YOUR_API_KEY'
```

```Node
const axios = require('axios');

const createBillable = async () => {
  try {
    const response = await axios.post('https://sandbox.api.useascend.com/v1/billables', {}, {
      headers: {
        'Authorization': 'Bearer YOUR_API_KEY'
      }
    });
    console.log(response.data);
  } catch (error) {
    console.error('Error creating billable:', error);
  }
};

createBillable();
```

```Ruby
require 'httparty'

url = 'https://sandbox.api.useascend.com/v1/billables'
headers = { 'Authorization' => 'Bearer YOUR_API_KEY' }

response = HTTParty.post(url, headers: headers)
puts response.body
```

```PHP
<?php

$url = 'https://sandbox.api.useascend.com/v1/billables';
$headers = [
    'Authorization: Bearer YOUR_API_KEY'
];

$ch = curl_init($url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
curl_setopt($ch, CURLOPT_POST, true);

$response = curl_exec($ch);

if (curl_errno($ch)) {
    echo 'Error:' . curl_error($ch);
} else {
    echo $response;
}

curl_close($ch);
?>
```

```Python
import requests

url = 'https://sandbox.api.useascend.com/v1/billables'
headers = {
    'Authorization': 'Bearer YOUR_API_KEY'
}

response = requests.post(url, headers=headers)
print(response.json())
```

--------------------------------

### Get Cancelation Return Example

Source: https://useascend.readme.io/reference/getcancelationreturn

Example of how to retrieve a cancelation return using the API.

```APIDOC
GET https://sandbox.api.useascend.com/v1/cancelation_returns/{id}

Description:
  Retrieves a specific cancelation return by its ID.

Parameters:
  - id: The unique identifier for the cancelation return.

Authentication:
  Bearer Token

Response:
  (Details depend on the specific request and response structure, typically JSON)

Supported Languages for Request:
  Shell, Node, Ruby, PHP, Python
```

```Shell
curl -X GET \
  'https://sandbox.api.useascend.com/v1/cancelation_returns/{id}' \
  -H 'Authorization: Bearer YOUR_ACCESS_TOKEN'
```

```Node
const axios = require('axios');

const accessToken = 'YOUR_ACCESS_TOKEN';
const cancelationReturnId = '{id}';

axios.get(`https://sandbox.api.useascend.com/v1/cancelation_returns/${cancelationReturnId}`, {
  headers: {
    'Authorization': `Bearer ${accessToken}`
  }
})
.then(response => {
  console.log(response.data);
})
.catch(error => {
  console.error('Error fetching cancelation return:', error);
});
```

```Python
import requests

access_token = 'YOUR_ACCESS_TOKEN'
cancelaion_return_id = '{id}'

url = f'https://sandbox.api.useascend.com/v1/cancelation_returns/{cancelaion_return_id}'
headers = {
    'Authorization': f'Bearer {access_token}'
}

response = requests.get(url, headers=headers)

if response.status_code == 200:
    print(response.json())
else:
    print(f'Error: {response.status_code} - {response.text}')
```

--------------------------------

### Get One Time Payment Example

Source: https://useascend.readme.io/reference/getonetimepayment

Example of how to retrieve a specific one-time payment using the API.

```APIDOC
GET https://sandbox.api.useascend.com/v1/one_time_payments/{id}

Language Options:
Shell
Node
Ruby
PHP
Python

Authentication:
Bearer Token

Example Request:
GET https://sandbox.api.useascend.com/v1/one_time_payments/123e4567-e89b-12d3-a456-426614174000
Authorization: Bearer YOUR_API_KEY
```

--------------------------------

### Create a Return Example

Source: https://useascend.readme.io/reference/post_v1-one-time-payments-one-time-payment-id-returns

Example of how to create a return for a one-time payment. This includes the HTTP method, URL, and language-specific code snippets.

```Shell
curl -X POST \
  https://sandbox.api.useascend.com/v1/one_time_payments/{one_time_payment_id}/returns \
  -H 'Authorization: Bearer YOUR_ACCESS_TOKEN'
```

```Node
const axios = require('axios');

const oneTimePaymentId = 'YOUR_ONE_TIME_PAYMENT_ID';
const accessToken = 'YOUR_ACCESS_TOKEN';

axios.post(`https://sandbox.api.useascend.com/v1/one_time_payments/${oneTimePaymentId}/returns`, {}, {
  headers: {
    'Authorization': `Bearer ${accessToken}`
  }
})
.then(response => {
  console.log(response.data);
})
.catch(error => {
  console.error(error);
});
```

```Ruby
require 'httparty'

one_time_payment_id = 'YOUR_ONE_TIME_PAYMENT_ID'
access_token = 'YOUR_ACCESS_TOKEN'

response = HTTParty.post(
  "https://sandbox.api.useascend.com/v1/one_time_payments/#{one_time_payment_id}/returns",
  headers: {
    'Authorization' => "Bearer #{access_token}"
  }
)

puts response.body
```

```PHP
<?php

$oneTimePaymentId = 'YOUR_ONE_TIME_PAYMENT_ID';
$accessToken = 'YOUR_ACCESS_TOKEN';

$url = "https://sandbox.api.useascend.com/v1/one_time_payments/{$oneTimePaymentId}/returns";

$ch = curl_init($url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, array(
    'Authorization: Bearer ' . $accessToken
));

$response = curl_exec($ch);

if (curl_errno($ch)) {
    echo 'Curl error: ' . curl_error($ch);
} else {
    echo $response;
}

curl_close($ch);
?>
```

```Python
import requests

one_time_payment_id = 'YOUR_ONE_TIME_PAYMENT_ID'
access_token = 'YOUR_ACCESS_TOKEN'

url = f"https://sandbox.api.useascend.com/v1/one_time_payments/{one_time_payment_id}/returns"
headers = {
    'Authorization': f'Bearer {access_token}'
}

response = requests.post(url, headers=headers)

print(response.json())
```

--------------------------------

### List Invoices Example

Source: https://useascend.readme.io/reference/invoices

Example of how to list invoices using various programming languages.

```Shell
curl -X GET \
  https://sandbox.api.useascend.com/v1/invoices \
  -H 'Authorization: Bearer YOUR_API_KEY'
```

```Node
const axios = require('axios');

const listInvoices = async () => {
  try {
    const response = await axios.get('https://sandbox.api.useascend.com/v1/invoices', {
      headers: {
        'Authorization': 'Bearer YOUR_API_KEY'
      }
    });
    console.log(response.data);
  } catch (error) {
    console.error('Error listing invoices:', error);
  }
};

listInvoices();
```

```Ruby
require 'httparty'

url = 'https://sandbox.api.useascend.com/v1/invoices'
headers = { 'Authorization' => 'Bearer YOUR_API_KEY' }

response = HTTParty.get(url, headers: headers)

if response.success?
  puts response.parsed_response
else
  puts "Error listing invoices: #{response.code} - #{response.message}"
end
```

```PHP
<?php

$url = 'https://sandbox.api.useascend.com/v1/invoices';
$headers = [
    'Authorization: Bearer YOUR_API_KEY'
];

$ch = curl_init($url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);

$response = curl_exec($ch);

if ($response === false) {
    echo 'Curl error: ' . curl_error($ch);
} else {
    echo $response;
}

curl_close($ch);
?>
```

```Python
import requests

url = 'https://sandbox.api.useascend.com/v1/invoices'
headers = {
    'Authorization': 'Bearer YOUR_API_KEY'
}

try:
    response = requests.get(url, headers=headers)
    response.raise_for_status()  # Raise an exception for bad status codes
    print(response.json())
except requests.exceptions.RequestException as e:
    print(f'Error listing invoices: {e}')
```

--------------------------------

### List Invoices Example

Source: https://useascend.readme.io/reference/listinvoices

Example of how to list invoices using various programming languages.

```Shell
curl -X GET \
  https://sandbox.api.useascend.com/v1/invoices \
  -H 'Authorization: Bearer YOUR_API_KEY'
```

```Node
const axios = require('axios');

const listInvoices = async () => {
  try {
    const response = await axios.get('https://sandbox.api.useascend.com/v1/invoices', {
      headers: {
        'Authorization': 'Bearer YOUR_API_KEY'
      }
    });
    console.log(response.data);
  } catch (error) {
    console.error('Error listing invoices:', error);
  }
};

listInvoices();
```

```Ruby
require 'httparty'

url = 'https://sandbox.api.useascend.com/v1/invoices'
headers = { 'Authorization' => 'Bearer YOUR_API_KEY' }

response = HTTParty.get(url, headers: headers)

if response.success?
  puts response.parsed_response
else
  puts "Error listing invoices: #{response.code} - #{response.message}"
end
```

```PHP
<?php

$url = 'https://sandbox.api.useascend.com/v1/invoices';
$headers = [
    'Authorization: Bearer YOUR_API_KEY'
];

$ch = curl_init($url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);

$response = curl_exec($ch);

if ($response === false) {
    echo 'Curl error: ' . curl_error($ch);
} else {
    echo $response;
}

curl_close($ch);
?>
```

```Python
import requests

url = 'https://sandbox.api.useascend.com/v1/invoices'
headers = {
    'Authorization': 'Bearer YOUR_API_KEY'
}

try:
    response = requests.get(url, headers=headers)
    response.raise_for_status()  # Raise an exception for bad status codes
    print(response.json())
except requests.exceptions.RequestException as e:
    print(f'Error listing invoices: {e}')
```

--------------------------------

### Get Installment by ID

Source: https://useascend.readme.io/reference/installments

Retrieves a specific installment using its unique identifier. Requires authentication via Bearer token.

```APIDOC
GET /v1/installments/{id}

Retrieves a specific installment.

Parameters:
  - id (string, required): The unique identifier of the installment.

Base URL:
  https://sandbox.api.useascend.com

Authentication:
  Bearer Token

Example Request:
  GET https://sandbox.api.useascend.com/v1/installments/installment_id_123

Response:
  Details of the requested installment.
```

```Shell
curl -X GET \
  https://sandbox.api.useascend.com/v1/installments/{id} \
  -H 'Authorization: Bearer YOUR_ACCESS_TOKEN'
```

```Node
const axios = require('axios');

const getInstallment = async (id, token) => {
  try {
    const response = await axios.get(`https://sandbox.api.useascend.com/v1/installments/${id}`, {
      headers: {
        'Authorization': `Bearer ${token}`
      }
    });
    return response.data;
  } catch (error) {
    console.error('Error fetching installment:', error);
    throw error;
  }
};
```

```Ruby
require 'httparty'

url = 'https://sandbox.api.useascend.com/v1/installments/'
installment_id = 'your_installment_id'
access_token = 'YOUR_ACCESS_TOKEN'

response = HTTParty.get("#{url}#{installment_id}", headers: { 'Authorization' => "Bearer #{access_token}" })
puts response.body
```

```PHP
<?php

$ch = curl_init();

$installmentId = 'your_installment_id';
$accessToken = 'YOUR_ACCESS_TOKEN';

curl_setopt($ch, CURLOPT_URL, "https://sandbox.api.useascend.com/v1/installments/{$installmentId}");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'GET');
curl_setopt($ch, CURLOPT_HTTPHEADER, array(
    'Authorization: Bearer ' . $accessToken
));

$response = curl_exec($ch);

if (curl_errno($ch)) {
    echo 'Error:' . curl_error($ch);
}

curl_close($ch);

echo $response;
?>
```

```Python
import requests

installment_id = 'your_installment_id'
access_token = 'YOUR_ACCESS_TOKEN'

url = f"https://sandbox.api.useascend.com/v1/installments/{installment_id}"

headers = {
    'Authorization': f'Bearer {access_token}'
}

response = requests.get(url, headers=headers)

if response.status_code == 200:
    print(response.json())
else:
    print(f"Error: {response.status_code}")
    print(response.text)
```

--------------------------------

### Get Installment by ID

Source: https://useascend.readme.io/reference/get_v1-installments-id

Retrieves a specific installment using its unique identifier. Requires authentication via Bearer token.

```APIDOC
GET /v1/installments/{id}

Retrieves a specific installment.

Parameters:
  - id (string, required): The unique identifier of the installment.

Base URL:
  https://sandbox.api.useascend.com

Authentication:
  Bearer Token

Example Request:
  GET https://sandbox.api.useascend.com/v1/installments/installment_id_123

Response:
  Details of the requested installment.
```

```Shell
curl -X GET \
  https://sandbox.api.useascend.com/v1/installments/{id} \
  -H 'Authorization: Bearer YOUR_ACCESS_TOKEN'
```

```Node
const axios = require('axios');

const getInstallment = async (id, token) => {
  try {
    const response = await axios.get(`https://sandbox.api.useascend.com/v1/installments/${id}`, {
      headers: {
        'Authorization': `Bearer ${token}`
      }
    });
    return response.data;
  } catch (error) {
    console.error('Error fetching installment:', error);
    throw error;
  }
};
```

```Ruby
require 'httparty'

url = 'https://sandbox.api.useascend.com/v1/installments/'
installment_id = 'your_installment_id'
access_token = 'YOUR_ACCESS_TOKEN'

response = HTTParty.get("#{url}#{installment_id}", headers: { 'Authorization' => "Bearer #{access_token}" })
puts response.body
```

```PHP
<?php

$ch = curl_init();

$installmentId = 'your_installment_id';
$accessToken = 'YOUR_ACCESS_TOKEN';

curl_setopt($ch, CURLOPT_URL, "https://sandbox.api.useascend.com/v1/installments/{$installmentId}");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'GET');
curl_setopt($ch, CURLOPT_HTTPHEADER, array(
    'Authorization: Bearer ' . $accessToken
));

$response = curl_exec($ch);

if (curl_errno($ch)) {
    echo 'Error:' . curl_error($ch);
}

curl_close($ch);

echo $response;
?>
```

```Python
import requests

installment_id = 'your_installment_id'
access_token = 'YOUR_ACCESS_TOKEN'

url = f"https://sandbox.api.useascend.com/v1/installments/{installment_id}"

headers = {
    'Authorization': f'Bearer {access_token}'
}

response = requests.get(url, headers=headers)

if response.status_code == 200:
    print(response.json())
else:
    print(f"Error: {response.status_code}")
    print(response.text)
```

--------------------------------

### Create Contact API Examples

Source: https://useascend.readme.io/reference/post_v1-contacts

Examples for creating a new contact via the UseAscend API, provided in multiple programming languages and shell.

```Shell
curl -X POST \
  https://sandbox.api.useascend.com/v1/contacts \
  -H 'Authorization: Bearer YOUR_API_KEY' \
  -H 'Content-Type: application/json' \
  -d '{ "name": "John Doe", "email": "john.doe@example.com" }'
```

```Node
const axios = require('axios');

const createContact = async (apiKey, contactData) => {
  try {
    const response = await axios.post('https://sandbox.api.useascend.com/v1/contacts', contactData, {
      headers: {
        'Authorization': `Bearer ${apiKey}`,
        'Content-Type': 'application/json'
      }
    });
    return response.data;
  } catch (error) {
    console.error('Error creating contact:', error);
    throw error;
  }
};

// Example usage:
// createContact('YOUR_API_KEY', { name: 'Jane Doe', email: 'jane.doe@example.com' });
```

```Ruby
require 'httparty'

url = 'https://sandbox.api.useascend.com/v1/contacts'
api_key = 'YOUR_API_KEY'
contact_data = { name: 'John Doe', email: 'john.doe@example.com' }.to_json

response = HTTParty.post(url, 
  body: contact_data,
  headers: {
    'Authorization' => "Bearer #{api_key}",
    'Content-Type' => 'application/json'
  }
)

puts response.body
```

```PHP
<?php

$url = 'https://sandbox.api.useascend.com/v1/contacts';
$apiKey = 'YOUR_API_KEY';
$contactData = json_encode(['name' => 'John Doe', 'email' => 'john.doe@example.com']);

$ch = curl_init($url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, $contactData);
curl_setopt($ch, CURLOPT_HTTPHEADER, [
    'Authorization: Bearer ' . $apiKey,
    'Content-Type: application/json'
]);

$response = curl_exec($ch);

if (curl_errno($ch)) {
    echo 'Curl error: ' . curl_error($ch);
}

curl_close($ch);

echo $response;
?>
```

```Python
import requests

url = 'https://sandbox.api.useascend.com/v1/contacts'
api_key = 'YOUR_API_KEY'
contact_data = {
    'name': 'John Doe',
    'email': 'john.doe@example.com'
}

headers = {
    'Authorization': f'Bearer {api_key}',
    'Content-Type': 'application/json'
}

response = requests.post(url, json=contact_data, headers=headers)

print(response.json())
```

--------------------------------

### Update Program Example

Source: https://useascend.readme.io/reference/updateprogram

Example of how to update a program using the API, with support for multiple programming languages.

```Shell
curl -X PATCH \
  https://sandbox.api.useascend.com/v1/programs/{id} \
  -H 'Authorization: Bearer YOUR_API_KEY' \
  -H 'Content-Type: application/json' \
  -d '{ "fieldName": "newValue" }'
```

```Node
const axios = require('axios');

const updateProgram = async (programId, data) => {
  try {
    const response = await axios.patch(`https://sandbox.api.useascend.com/v1/programs/${programId}`, data, {
      headers: {
        'Authorization': 'Bearer YOUR_API_KEY',
        'Content-Type': 'application/json'
      }
    });
    return response.data;
  } catch (error) {
    console.error('Error updating program:', error);
    throw error;
  }
};

// Example usage:
// updateProgram('some-program-id', { fieldName: 'newValue' });
```

```Ruby
require 'httparty'

url = 'https://sandbox.api.useascend.com/v1/programs/{id}'
headers = {
  'Authorization' => 'Bearer YOUR_API_KEY',
  'Content-Type' => 'application/json'
}
body = { fieldName: 'newValue' }.to_json

response = HTTParty.patch(url, headers: headers, body: body)

if response.success?
  puts response.parsed_response
else
  puts "Error: #{response.code} - #{response.message}"
end
```

```PHP
$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => 'https://sandbox.api.useascend.com/v1/programs/{id}',
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => '',
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 0,
  CURLOPT_FOLLOWLOCATION => true,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => 'PATCH',
  CURLOPT_POSTFIELDS => json_encode(['fieldName' => 'newValue']),
  CURLOPT_HTTPHEADER => [
    'Authorization: Bearer YOUR_API_KEY',
    'Content-Type: application/json'
  ],
]);

$response = curl_exec($curl);

curl_close($curl);
echo $response;

```

```Python
import requests

url = 'https://sandbox.api.useascend.com/v1/programs/{id}'
headers = {
    'Authorization': 'Bearer YOUR_API_KEY',
    'Content-Type': 'application/json'
}
payload = {
    'fieldName': 'newValue'
}

try:
    response = requests.patch(url, json=payload, headers=headers)
    response.raise_for_status()  # Raise an exception for bad status codes
    print(response.json())
except requests.exceptions.RequestException as e:
    print(f'Error updating program: {e}')

```

--------------------------------

### Installment Plans API

Source: https://useascend.readme.io/reference/getloan

Manage installment plans, including creation, retrieval, updates, archiving, and notifications. Supports operations for getting, creating, updating, archiving, and sending reminders for installment plans.

```APIDOC
InstallmentPlans:
  - Get installment plan: GET /v1/installment-plans/{id}
  - Archive installment plan: DELETE /v1/installment-plans/{id}/archive
  - Create installment plan: POST /v1/installment-plans
  - Update installment plan: PATCH /v1/installment-plans/{id}
  - Cancel installment plan: POST /v1/installment-plans/{id}/cancel
  - Notify User: POST /v1/installment-plans/{id}/reminders

  Returns:
    - Get returns: GET /v1/installment-plans/{id}/returns
    - Create a return: POST /v1/installment-plans/{id}/returns
    - Get a return: GET /v1/installment-plans/{id}/returns/{returnId}
    - Update a return: PATCH /v1/installment-plans/{id}/returns/{returnId}
    - Void return: DELETE /v1/installment-plans/{id}/returns/{returnId}
```

--------------------------------

### List Coverage Types Example

Source: https://useascend.readme.io/reference/listcoveragetypes

Example of how to list coverage types using the UseAscend API.

```Shell
curl -X GET \
  https://sandbox.api.useascend.com/v1/coverage_types \
  -H 'Authorization: Bearer YOUR_API_KEY'
```

```Node
const axios = require('axios');

axios.get('https://sandbox.api.useascend.com/v1/coverage_types', {
  headers: {
    'Authorization': 'Bearer YOUR_API_KEY'
  }
})
.then(response => {
  console.log(response.data);
})
.catch(error => {
  console.error(error);
});
```

```Ruby
require 'httparty'

response = HTTParty.get('https://sandbox.api.useascend.com/v1/coverage_types', 
  headers: { 'Authorization' => 'Bearer YOUR_API_KEY' })

puts response.body
```

```PHP
<?php

$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, 'https://sandbox.api.useascend.com/v1/coverage_types');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'GET');
curl_setopt($ch, CURLOPT_HTTPHEADER, array(
  'Authorization: Bearer YOUR_API_KEY'
));

$response = curl_exec($ch);

if (curl_errno($ch)) {
    echo 'Error:' . curl_error($ch);
}
curl_close($ch);

echo $response;
?>
```

```Python
import requests

url = "https://sandbox.api.useascend.com/v1/coverage_types"
headers = {
    'Authorization': 'Bearer YOUR_API_KEY'
}

response = requests.get(url, headers=headers)

print(response.json())
```

--------------------------------

### Installment Plans API

Source: https://useascend.readme.io/reference/delete_v1-installment-plans-installment-plan-id-returns-return-id

Manage installment plans, including creating, updating, archiving, and handling returns. Supports various operations like GET, POST, PATCH, and DELETE for different aspects of installment plans.

```APIDOC
InstallmentPlans:
  - GET /v1/installment-plans/{id}: Get installment plan details.
  - POST /v1/installment-plans: Create a new installment plan.
  - PATCH /v1/installment-plans: Update an existing installment plan.
  - POST /v1/installment-plans/{id}/archive: Archive an installment plan.
  - POST /v1/installment-plans/send-reminder: Notify user about installment plan.

  Returns:
    - GET /v1/installment-plans/{installment_plan_id}/returns: Get returns for an installment plan.
    - POST /v1/installment-plans/{installment_plan_id}/returns: Create a return for an installment plan.
    - GET /v1/installment-plans/{installment_plan_id}/returns/{return_id}: Get a specific return.
    - PATCH /v1/installment-plans/{installment_plan_id}/returns/{return_id}: Update a return.
    - DELETE /v1/installment-plans/{installment_plan_id}/returns/{return_id}: Void a return.
```

--------------------------------

### List Contacts Example

Source: https://useascend.readme.io/reference/get_v1-contacts

Example of how to list contacts using the API, with support for multiple programming languages.

```Shell
curl -X GET \
  https://sandbox.api.useascend.com/v1/contacts \
  -H 'Authorization: Bearer YOUR_ACCESS_TOKEN'
```

```Node
const axios = require('axios');

const getContacts = async () => {
  try {
    const response = await axios.get('https://sandbox.api.useascend.com/v1/contacts', {
      headers: {
        'Authorization': 'Bearer YOUR_ACCESS_TOKEN'
      }
    });
    console.log(response.data);
  } catch (error) {
    console.error('Error fetching contacts:', error);
  }
};

getContacts();
```

```Ruby
require 'httparty'

url = 'https://sandbox.api.useascend.com/v1/contacts'
headers = { 'Authorization' => 'Bearer YOUR_ACCESS_TOKEN' }

response = HTTParty.get(url, headers: headers)
puts response.body
```

```PHP
<?php

$url = 'https://sandbox.api.useascend.com/v1/contacts';
$headers = [
    'Authorization: Bearer YOUR_ACCESS_TOKEN'
];

$ch = curl_init($url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);

$response = curl_exec($ch);

if (curl_errno($ch)) {
    echo 'Error:' . curl_error($ch);
} else {
    echo $response;
}

c_close($ch);
?>
```

```Python
import requests

url = 'https://sandbox.api.useascend.com/v1/contacts'
headers = {
    'Authorization': 'Bearer YOUR_ACCESS_TOKEN'
}

try:
    response = requests.get(url, headers=headers)
    response.raise_for_status()  # Raise an exception for bad status codes
    print(response.json())
except requests.exceptions.RequestException as e:
    print(f'Error fetching contacts: {e}')
```

--------------------------------

### List Coverage Types Example

Source: https://useascend.readme.io/reference/coveragetypes

Example of how to list coverage types using the UseAscend API.

```Shell
curl -X GET \
  https://sandbox.api.useascend.com/v1/coverage_types \
  -H 'Authorization: Bearer YOUR_API_KEY'
```

```Node
const axios = require('axios');

axios.get('https://sandbox.api.useascend.com/v1/coverage_types', {
  headers: {
    'Authorization': 'Bearer YOUR_API_KEY'
  }
})
.then(response => {
  console.log(response.data);
})
.catch(error => {
  console.error(error);
});
```

```Ruby
require 'httparty'

response = HTTParty.get('https://sandbox.api.useascend.com/v1/coverage_types', 
  headers: { 'Authorization' => 'Bearer YOUR_API_KEY' })

puts response.body
```

```PHP
<?php

$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, 'https://sandbox.api.useascend.com/v1/coverage_types');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'GET');
curl_setopt($ch, CURLOPT_HTTPHEADER, array(
  'Authorization: Bearer YOUR_API_KEY'
));

$response = curl_exec($ch);

if (curl_errno($ch)) {
    echo 'Error:' . curl_error($ch);
}
curl_close($ch);

echo $response;
?>
```

```Python
import requests

url = "https://sandbox.api.useascend.com/v1/coverage_types"
headers = {
    'Authorization': 'Bearer YOUR_API_KEY'
}

response = requests.get(url, headers=headers)

print(response.json())
```

--------------------------------

### Get Loan Example

Source: https://useascend.readme.io/reference/getloan

Example of how to retrieve a loan by its ID using the Ascend API. This endpoint requires authentication via a Bearer token.

```Shell
curl -X GET \
  https://sandbox.api.useascend.com/v1/loans/{id} \
  -H 'Authorization: Bearer YOUR_ACCESS_TOKEN'
```

```Node
const axios = require('axios');

const getLoan = async (id, accessToken) => {
  try {
    const response = await axios.get(`https://sandbox.api.useascend.com/v1/loans/${id}`, {
      headers: {
        'Authorization': `Bearer ${accessToken}`
      }
    });
    return response.data;
  } catch (error) {
    console.error('Error fetching loan:', error);
    throw error;
  }
};

// Example usage:
// getLoan('loan-id-123', 'YOUR_ACCESS_TOKEN');
```

```Ruby
require 'httparty'

url = 'https://sandbox.api.useascend.com/v1/loans/{id}'
access_token = 'YOUR_ACCESS_TOKEN'

response = HTTParty.get(url, headers: { 'Authorization' => "Bearer #{access_token}" })

if response.success?
  puts response.parsed_response
else
  puts "Error: #{response.code} - #{response.message}"
end
```

```PHP
<?php

$ch = curl_init();

$id = 'loan-id-123'; // Replace with actual loan ID
$accessToken = 'YOUR_ACCESS_TOKEN'; // Replace with your access token

curl_setopt($ch, CURLOPT_URL, "https://sandbox.api.useascend.com/v1/loans/{$id}");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'GET');
curl_setopt($ch, CURLOPT_HTTPHEADER, array(
    'Authorization: Bearer ' . $accessToken
));

$response = curl_exec($ch);

if (curl_errno($ch)) {
    echo 'Error:' . curl_error($ch);
} else {
    echo $response;
}

curl_close($ch);
?>
```

```Python
import requests

def get_loan(loan_id, access_token):
    url = f"https://sandbox.api.useascend.com/v1/loans/{loan_id}"
    headers = {
        'Authorization': f'Bearer {access_token}'
    }
    try:
        response = requests.get(url, headers=headers)
        response.raise_for_status()  # Raise an exception for bad status codes
        return response.json()
    except requests.exceptions.RequestException as e:
        print(f"Error fetching loan: {e}")
        return None

# Example usage:
# loan_data = get_loan('loan-id-123', 'YOUR_ACCESS_TOKEN')
# if loan_data:
#     print(loan_data)
```

--------------------------------

### Installment Plans API

Source: https://useascend.readme.io/reference/createonetimepayment

Endpoints for managing installment plans, including creation, retrieval, updates, archiving, and handling returns. Supports various operations like creating, getting, updating, and voiding returns associated with installment plans.

```APIDOC
InstallmentPlans:
  - GET /v1/installment-plans/{id}: Retrieve a specific installment plan.
  - DELETE /v1/installment-plans/{id}/archive: Archive an installment plan.
  - POST /v1/installment-plans: Create a new installment plan.
  - PATCH /v1/installment-plans: Update an existing installment plan.
  - POST /v1/installment-plans/send-reminder: Notify a user about an installment plan.

Returns:
  - GET /v1/installment-plans/{installment-plan-id}/returns: List returns for an installment plan.
  - POST /v1/installment-plans/{installment-plan-id}/returns: Create a return for an installment plan.
  - GET /v1/installment-plans/{installment-plan-id}/returns/{return-id}: Retrieve a specific return.
  - PATCH /v1/installment-plans/{installment-plan-id}/returns/{return-id}: Update a return.
  - DELETE /v1/installment-plans/{installment-plan-id}/returns/{return-id}: Void a return.
```

--------------------------------

### API V1 - Installment Plans

Source: https://useascend.readme.io/reference/cancelinstallmentplan

Endpoints for managing installment plans, including creation, retrieval, updates, cancellations, and related return operations.

```APIDOC
GET /v1/installment-plans/{id}
  - Retrieves a specific installment plan.

DELETE /v1/installment-plans/{id}/archive
  - Archives an installment plan.

GET /v1/installment-plans/{id}/returns
  - Retrieves returns associated with an installment plan.

POST /v1/installment-plans/{id}/returns
  - Creates a new return for an installment plan.

GET /v1/installment-plans/{id}/returns/{returnId}
  - Retrieves a specific return for an installment plan.

PATCH /v1/installment-plans/{id}/returns/{returnId}
  - Updates a specific return for an installment plan.

DELETE /v1/installment-plans/{id}/returns/{returnId}
  - Voids a specific return for an installment plan.

POST /v1/installment-plans
  - Creates a new installment plan.

PATCH /v1/installment-plans
  - Updates an existing installment plan.

POST /v1/installment-plans/{id}/cancel
  - Cancels a purchased installment plan, voiding unpaid installments.

POST /v1/installment-plans/send-reminder
  - Notifies a user about an installment plan.
```

--------------------------------

### Notify User - Installment Plan Reminder

Source: https://useascend.readme.io/reference/sendinstallmentplanreminder

Sends a reminder notification to a user for an installment plan. This example shows how to trigger the notification via API.

```APIDOC
POST /v1/installment_plans/{id}/send

Description:
  Sends a reminder notification to the user associated with a specific installment plan.

Parameters:
  - id (path): The unique identifier of the installment plan.

Authentication:
  - Bearer Token

Base URL:
  https://sandbox.api.useascend.com/v1

Example Usage:
  This endpoint can be called using various HTTP clients or SDKs. The response structure is not detailed here but typically indicates success or failure of the notification dispatch.
```

```Shell
curl -X POST \
  https://sandbox.api.useascend.com/v1/installment_plans/{id}/send \
  -H "Authorization: Bearer YOUR_API_TOKEN"
```

```Node
const axios = require('axios');

const sendReminder = async (planId, token) => {
  try {
    const response = await axios.post(`https://sandbox.api.useascend.com/v1/installment_plans/${planId}/send`, null, {
      headers: {
        'Authorization': `Bearer ${token}`
      }
    });
    console.log('Reminder sent successfully:', response.data);
  } catch (error) {
    console.error('Error sending reminder:', error.response ? error.response.data : error.message);
  }
};

sendReminder('YOUR_PLAN_ID', 'YOUR_API_TOKEN');
```

```Ruby
require 'httparty'

url = "https://sandbox.api.useascend.com/v1/installment_plans/#{plan_id}/send"
headers = { 'Authorization' => "Bearer #{api_token}" }

response = HTTParty.post(url, headers: headers)

if response.success?
  puts "Reminder sent successfully: #{response.body}"
else
  puts "Error sending reminder: #{response.code} - #{response.body}"
end
```

```PHP
$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://sandbox.api.useascend.com/v1/installment_plans/{$planId}/send",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer {$apiToken}"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:". $err;
} else {
  echo $response;
}
```

```Python
import requests

url = f"https://sandbox.api.useascend.com/v1/installment_plans/{plan_id}/send"
headers = {
    "Authorization": f"Bearer {api_token}"
}

try:
    response = requests.post(url, headers=headers)
    response.raise_for_status()  # Raise an exception for bad status codes
    print("Reminder sent successfully:", response.json())
except requests.exceptions.RequestException as e:
    print(f"Error sending reminder: {e}")
```

--------------------------------

### Programs API

Source: https://useascend.readme.io/reference/installments

Manage program configurations and related actions. Includes listing, creating, retrieving, updating, archiving programs, generating payment proposals, notifying users, and estimating loan payoffs.

```APIDOC
Programs:
  List Programs (GET): /reference/listprograms
  Generate payment proposal document for a program (POST): /reference/createpaymentproposal
  Create Program (POST): /reference/createprogram
  Get Program (GET): /reference/getprogram
  Update program (PATCH): /reference/updateprogram
  Archive Program (DELETE): /reference/deleteprogram
  Notify User (POST): /reference/notifyinsured
  Loan Payoff Estimate (POST): /reference/createloanpayoffestimate
```

--------------------------------

### Create Insured API Example

Source: https://useascend.readme.io/reference/createinsured

Example of how to create an insured entity using the Ascend API across multiple programming languages.

```Shell
curl -X POST \
  https://sandbox.api.useascend.com/v1/insureds \
  -H 'Authorization: Bearer YOUR_API_KEY' \
  -H 'Content-Type: application/json' \
  -d '{ "key": "value" }'
```

```Node
const axios = require('axios');

const createInsured = async () => {
  try {
    const response = await axios.post('https://sandbox.api.useascend.com/v1/insureds', {
      // Insured data
    }, {
      headers: {
        'Authorization': 'Bearer YOUR_API_KEY',
        'Content-Type': 'application/json'
      }
    });
    console.log(response.data);
  } catch (error) {
    console.error(error);
  }
};

createInsured();
```

```Ruby
require 'httparty'

response = HTTParty.post('https://sandbox.api.useascend.com/v1/insureds', 
  body: { key: 'value' }.to_json, 
  headers: {
    'Authorization' => 'Bearer YOUR_API_KEY',
    'Content-Type' => 'application/json'
  }
)

puts response.body
```

```PHP
$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, 'https://sandbox.api.useascend.com/v1/insureds');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode(['key' => 'value']));

$headers = array();
$headers[] = 'Authorization: Bearer YOUR_API_KEY';
$headers[] = 'Content-Type: application/json';
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);

$result = curl_exec($ch);
if (curl_errno($ch)) {
    echo 'Error:' . curl_error($ch);
}
curl_close($ch);

echo $result;
```

```Python
import requests

url = "https://sandbox.api.useascend.com/v1/insureds"
headers = {
    'Authorization': 'Bearer YOUR_API_KEY',
    'Content-Type': 'application/json'
}
data = {
    "key": "value"
}

response = requests.post(url, headers=headers, json=data)
print(response.json())
```

--------------------------------

### List Insureds Example

Source: https://useascend.readme.io/reference/listinsureds

Demonstrates how to list insureds using the API. Includes example request URL, language options, and authentication method.

```APIDOC
List Insureds:
  Method: GET
  URL: https://sandbox.api.useascend.com/v1/insureds
  Languages:
    - Shell
    - Node
    - Ruby
    - PHP
    - Python
  Credentials:
    - Bearer Token
```

--------------------------------

### Premium Reducing Endorsement Example

Source: https://useascend.readme.io/reference/get_v1-premium-reducing-endorsements-id

Demonstrates how to retrieve a premium reducing endorsement using a GET request. Includes example URLs and language options for implementation.

```APIDOC
PremiumReducingEndorsement:
  GET https://sandbox.api.useascend.com/v1/premium_reducing_endorsements/{id}
    Description: Retrieves a premium reducing endorsement by its ID.
    Parameters:
      - id: The unique identifier of the premium reducing endorsement.
    Headers:
      - Authorization: Bearer <YOUR_API_KEY>
    Response:
      - 200 OK: Returns the premium reducing endorsement details.
      - 404 Not Found: If the endorsement with the specified ID does not exist.

  Example Usage:
    Shell:
      curl -X GET \
        -H "Authorization: Bearer <YOUR_API_KEY>" \
        "https://sandbox.api.useascend.com/v1/premium_reducing_endorsements/{id}"

    Node.js:
      const axios = require('axios');
      const apiKey = 'YOUR_API_KEY';
      const endorsementId = 'YOUR_ENDORSEMENT_ID';

      axios.get(`https://sandbox.api.useascend.com/v1/premium_reducing_endorsements/${endorsementId}`, {
        headers: {
          'Authorization': `Bearer ${apiKey}`
        }
      })
      .then(response => {
        console.log(response.data);
      })
      .catch(error => {
        console.error('Error fetching endorsement:', error);
      });

    Python:
      import requests

      api_key = 'YOUR_API_KEY'
      endorsement_id = 'YOUR_ENDORSEMENT_ID'
      url = f'https://sandbox.api.useascend.com/v1/premium_reducing_endorsements/{endorsement_id}'
      headers = {'Authorization': f'Bearer {api_key}'}

      response = requests.get(url, headers=headers)
      if response.status_code == 200:
          print(response.json())
      else:
          print(f'Error: {response.status_code} - {response.text}')
```

--------------------------------

### API Reference - Checkout Creation Workflow

Source: https://useascend.readme.io/docs

Steps to create a checkout session, involving Insured, Program, and Billable resources. Each step requires identifiers from previous steps. The `program_url` is the session URL for the user interface.

```APIDOC
POST /insured
  Description: Create an Insured entity.
  Requires: Insured details.
  Returns: An Insured object, including `insured.id`.

POST /program
  Description: Create a Program resource, encapsulating a checkout session.
  Requires: `insured.id`, `return_url`, `success_callback_url`.
  Returns: A Program object, including `program.id` and `program_url`.
  Notes:
    - `return_url`: Determines behavior when the user exits the session.
    - `success_callback_url`: Redirect URL upon successful checkout.

POST /billable
  Description: Create one or more Billable resources for a program.
  Requires: `program_id`, `wholesaler_id`, `carrier_id`, premium & fees.
  Returns: Billable object(s).
```

--------------------------------

### Get Installment Plan Returns

Source: https://useascend.readme.io/reference/get_v1-installment-plans-installment-plan-id-returns

Retrieves the returns associated with a specific installment plan. This endpoint allows fetching return details using various programming languages.

```APIDOC
GET /v1/installment_plans/{installment_plan_id}/returns

Description:
  Retrieves a list of returns for a given installment plan.

Parameters:
  - installment_plan_id (path): The unique identifier of the installment plan.

Returns:
  A list of return objects associated with the installment plan.

Base URL:
  https://sandbox.api.useascend.com/v1
```

```Shell
curl -X GET \
  https://sandbox.api.useascend.com/v1/installment_plans/{installment_plan_id}/returns \
  -H 'Authorization: Bearer YOUR_ACCESS_TOKEN'
```

```Node
const axios = require('axios');

const getInstallmentPlanReturns = async (installmentPlanId, accessToken) => {
  try {
    const response = await axios.get(`https://sandbox.api.useascend.com/v1/installment_plans/${installmentPlanId}/returns`, {
      headers: {
        'Authorization': `Bearer ${accessToken}`
      }
    });
    return response.data;
  } catch (error) {
    console.error('Error fetching installment plan returns:', error);
    throw error;
  }
};
```

```Ruby
require 'httparty'

url = 'https://sandbox.api.useascend.com/v1/installment_plans/{installment_plan_id}/returns'
headers = { 'Authorization' => 'Bearer YOUR_ACCESS_TOKEN' }

response = HTTParty.get(url, headers: headers)
puts response.body
```

```PHP
$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, 'https://sandbox.api.useascend.com/v1/installment_plans/{installment_plan_id}/returns');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'GET');
curl_setopt($ch, CURLOPT_HTTPHEADER, array(
    'Authorization: Bearer YOUR_ACCESS_TOKEN'
));

$response = curl_exec($ch);
if (curl_errno($ch)) {
    echo 'Error:' . curl_error($ch);
}
c_url_close($ch);
echo $response;
```

```Python
import requests

url = "https://sandbox.api.useascend.com/v1/installment_plans/{installment_plan_id}/returns"
headers = {
    "Authorization": "Bearer YOUR_ACCESS_TOKEN"
}

response = requests.get(url, headers=headers)
print(response.json())
```

--------------------------------

### Update User Example

Source: https://useascend.readme.io/reference/updateuser

Example of how to update a user via the API, with code samples in various languages.

```APIDOC
Update User:
  Method: PATCH
  URL: https://sandbox.api.useascend.com/v1/users/{id}
  Description: Updates an existing user.
  Parameters:
    - id: The unique identifier of the user to update.
  Authentication:
    - Bearer Token
  Response:
    - Click 'Try It!' to see the response.
  Languages:
    - Shell
    - Node
    - Ruby
    - PHP
    - Python
```

```Shell
curl -X PATCH \
  https://sandbox.api.useascend.com/v1/users/{id} \
  -H 'Authorization: Bearer YOUR_ACCESS_TOKEN' \
  -H 'Content-Type: application/json' \
  -d '{ "field": "value" }'
```

```Node
const axios = require('axios');

const updateUser = async (userId, userData) => {
  try {
    const response = await axios.patch(`https://sandbox.api.useascend.com/v1/users/${userId}`, userData, {
      headers: {
        'Authorization': 'Bearer YOUR_ACCESS_TOKEN',
        'Content-Type': 'application/json'
      }
    });
    return response.data;
  } catch (error) {
    console.error('Error updating user:', error);
    throw error;
  }
};
```

```Ruby
require 'httparty'

url = "https://sandbox.api.useascend.com/v1/users/#{user_id}"
headers = {
  'Authorization' => 'Bearer YOUR_ACCESS_TOKEN',
  'Content-Type' => 'application/json'
}
body = { field: 'value' }.to_json

response = HTTParty.patch(url, headers: headers, body: body)
puts response.parsed_response
```

```PHP
$userId = 'your_user_id';
$userData = ['field' => 'value'];
$token = 'YOUR_ACCESS_TOKEN';

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "https://sandbox.api.useascend.com/v1/users/{$userId}");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'PATCH');
curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($userData));

$headers = [
    "Authorization: Bearer {$token}",
    "Content-Type: application/json"
];

curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);

$response = curl_exec($ch);

if (curl_errno($ch)) {
    echo 'Error:' . curl_error($ch);
}

curl_close($ch);

echo $response;
```

```Python
import requests

user_id = 'your_user_id'
user_data = {'field': 'value'}
access_token = 'YOUR_ACCESS_TOKEN'

url = f"https://sandbox.api.useascend.com/v1/users/{user_id}"
headers = {
    'Authorization': f'Bearer {access_token}',
    'Content-Type': 'application/json'
}

response = requests.patch(url, json=user_data, headers=headers)

if response.status_code == 200:
    print(response.json())
else:
    print(f"Error: {response.status_code} - {response.text}")
```

--------------------------------

### Installment Plans API

Source: https://useascend.readme.io/reference/payouts

Endpoints for managing installment plans, including creation, retrieval, updates, archiving, and notifications. Supports various operations like getting, posting, patching, and deleting.

```APIDOC
InstallmentPlans:
  GET /v1/installment-plans/{id}
    - Retrieves a specific installment plan.
    - Parameters:
      - id: The unique identifier of the installment plan.

  POST /v1/installment-plans
    - Creates a new installment plan.
    - Parameters:
      - Request body containing installment plan details.

  PATCH /v1/installment-plans
    - Updates an existing installment plan.
    - Parameters:
      - Request body containing updated installment plan details.

  DELETE /v1/installment-plans/archive/{id}
    - Archives a specific installment plan.
    - Parameters:
      - id: The unique identifier of the installment plan to archive.

  POST /v1/installment-plans/send-reminder
    - Sends a reminder notification for an installment plan.
    - Parameters:
      - Request body containing reminder details.

Returns:
  GET /v1/installment-plans/{id}/returns
    - Lists all returns associated with an installment plan.
    - Parameters:
      - id: The unique identifier of the installment plan.

  POST /v1/installment-plans/{id}/returns
    - Creates a new return for an installment plan.
    - Parameters:
      - id: The unique identifier of the installment plan.
      - Request body containing return details.

  GET /v1/installment-plans/{id}/returns/{return_id}
    - Retrieves a specific return for an installment plan.
    - Parameters:
      - id: The unique identifier of the installment plan.
      - return_id: The unique identifier of the return.

  PATCH /v1/installment-plans/{id}/returns/{return_id}
    - Updates a specific return for an installment plan.
    - Parameters:
      - id: The unique identifier of the installment plan.
      - return_id: The unique identifier of the return.
      - Request body containing updated return details.

  DELETE /v1/installment-plans/{id}/returns/{return_id}
    - Voids a specific return for an installment plan.
    - Parameters:
      - id: The unique identifier of the installment plan.
      - return_id: The unique identifier of the return.
```

--------------------------------

### Reference - Wholesalers

Source: https://useascend.readme.io/reference/cancelinstallmentplan

Endpoint for listing wholesalers.

```APIDOC
GET /v1/wholesalers
  - Lists all wholesalers.
```

--------------------------------

### Installment Plans API

Source: https://useascend.readme.io/reference/listpayouts

Endpoints for managing installment plans, including creation, retrieval, updates, archiving, and notifications. Supports various operations like getting, posting, patching, and deleting.

```APIDOC
InstallmentPlans:
  GET /v1/installment-plans/{id}
    - Retrieves a specific installment plan.
    - Parameters:
      - id: The unique identifier of the installment plan.

  POST /v1/installment-plans
    - Creates a new installment plan.
    - Parameters:
      - Request body containing installment plan details.

  PATCH /v1/installment-plans
    - Updates an existing installment plan.
    - Parameters:
      - Request body containing updated installment plan details.

  DELETE /v1/installment-plans/archive/{id}
    - Archives a specific installment plan.
    - Parameters:
      - id: The unique identifier of the installment plan to archive.

  POST /v1/installment-plans/send-reminder
    - Sends a reminder notification for an installment plan.
    - Parameters:
      - Request body containing reminder details.

Returns:
  GET /v1/installment-plans/{id}/returns
    - Lists all returns associated with an installment plan.
    - Parameters:
      - id: The unique identifier of the installment plan.

  POST /v1/installment-plans/{id}/returns
    - Creates a new return for an installment plan.
    - Parameters:
      - id: The unique identifier of the installment plan.
      - Request body containing return details.

  GET /v1/installment-plans/{id}/returns/{return_id}
    - Retrieves a specific return for an installment plan.
    - Parameters:
      - id: The unique identifier of the installment plan.
      - return_id: The unique identifier of the return.

  PATCH /v1/installment-plans/{id}/returns/{return_id}
    - Updates a specific return for an installment plan.
    - Parameters:
      - id: The unique identifier of the installment plan.
      - return_id: The unique identifier of the return.
      - Request body containing updated return details.

  DELETE /v1/installment-plans/{id}/returns/{return_id}
    - Voids a specific return for an installment plan.
    - Parameters:
      - id: The unique identifier of the installment plan.
      - return_id: The unique identifier of the return.
```

--------------------------------

### Programs API

Source: https://useascend.readme.io/reference/sendinstallmentplanreminder

Manage programs within the Ascend platform. Includes listing, creating, retrieving, updating, archiving programs, and generating payment proposals and loan payoffs.

```APIDOC
GET /reference/listprograms
  - Lists all programs.
```

```APIDOC
POST /reference/createpaymentproposal
  - Generates a payment proposal document for a program.
```

```APIDOC
POST /reference/createprogram
  - Creates a new program.
```

```APIDOC
GET /reference/getprogram
  - Retrieves details for a specific program.
```

```APIDOC
PATCH /reference/updateprogram
  - Updates an existing program.
```

```APIDOC
DELETE /reference/deleteprogram
  - Archives or deletes a program.
```

```APIDOC
POST /reference/notifyinsured
  - Notifies a user or insured party about a program.
```

```APIDOC
POST /reference/createloanpayoffestimate
  - Creates a loan payoff estimate for a program.
```

--------------------------------

### Installment Plan Returns API

Source: https://useascend.readme.io/reference/post_v1-installment-plans

Handles returns associated with installment plans, allowing users to get, create, update, and void returns. Includes specific endpoints for managing return details.

```APIDOC
InstallmentPlanReturns:
  - Get returns: GET /v1/installment-plans/{installmentPlanId}/returns
  - Create a return: POST /v1/installment-plans/{installmentPlanId}/returns
  - Get a return: GET /v1/installment-plans/{installmentPlanId}/returns/{returnId}
  - Update a return: PATCH /v1/installment-plans/{installmentPlanId}/returns/{returnId}
  - Void return: DELETE /v1/installment-plans/{installmentPlanId}/returns/{returnId}
```

--------------------------------

### Cancelation Returns API

Source: https://useascend.readme.io/reference/sendinstallmentplanreminder

Manage cancelation and return processes. Supports listing, creating, retrieving, and updating cancelation returns.

```APIDOC
GET /reference/getcancelationreturns
  - Lists all cancelation returns.
```

```APIDOC
POST /reference/createcancelationreturns
  - Creates a new cancelation return.
```

```APIDOC
GET /reference/getcancelationreturn
  - Retrieves a specific cancelation return.
```

```APIDOC
PATCH /reference/updatecancelationreturn
  - Updates an existing cancelation return.
```

--------------------------------

### Installment Plans API

Source: https://useascend.readme.io/reference/post_v1-installment-plans

Manages installment plans, including creation, retrieval, updates, archiving, and notifications. Supports various operations like getting, creating, updating, archiving, and sending reminders.

```APIDOC
InstallmentPlans:
  - Get installment plan: GET /v1/installment-plans/{id}
  - Archive installment plan: DELETE /v1/installment-plans/{id}/archive
  - Create installment plan: POST /v1/installment-plans
  - Update installment plan: PATCH /v1/installment-plans/{id}
  - Cancel installment plan: POST /v1/installment-plans/{id}/cancel
  - Notify User: POST /v1/installment-plans/{id}/send-reminder
```

--------------------------------

### Installment Plans API

Source: https://useascend.readme.io/reference/updateuser

Endpoints for managing installment plans, including creation, retrieval, updates, archiving, and handling returns. Supports various operations like getting, creating, updating, voiding, and notifying users.

```APIDOC
InstallmentPlans:
  - GET /v1/installment-plans/{id}
    Description: Get a specific installment plan.
    Related: GET /v1/installment-plans/{id}/returns, POST /v1/installment-plans

  - DELETE /v1/installment-plans/archive/{id}
    Description: Archive an installment plan.
    Related: GET /v1/installment-plans/{id}

  - GET /v1/installment-plans/{id}/returns
    Description: Get all returns associated with an installment plan.
    Related: POST /v1/installment-plans/{id}/returns, GET /v1/installment-plans/{id}

  - POST /v1/installment-plans/{id}/returns
    Description: Create a new return for an installment plan.
    Related: GET /v1/installment-plans/{id}/returns, GET /v1/installment-plans/{id}/returns/{returnId}

  - GET /v1/installment-plans/{id}/returns/{returnId}
    Description: Get a specific return for an installment plan.
    Related: POST /v1/installment-plans/{id}/returns, PATCH /v1/installment-plans/{id}/returns/{returnId}

  - PATCH /v1/installment-plans/{id}/returns/{returnId}
    Description: Update an existing return for an installment plan.
    Related: GET /v1/installment-plans/{id}/returns/{returnId}, DELETE /v1/installment-plans/{id}/returns/{returnId}

  - DELETE /v1/installment-plans/{id}/returns/{returnId}
    Description: Void a specific return for an installment plan.
    Related: PATCH /v1/installment-plans/{id}/returns/{returnId}, GET /v1/installment-plans/{id}/returns/{returnId}

  - POST /v1/installment-plans
    Description: Create a new installment plan.
    Related: GET /v1/installment-plans/{id}

  - PATCH /v1/installment-plans/{id}
    Description: Update an existing installment plan.
    Related: GET /v1/installment-plans/{id}

  - POST /v1/installment-plans/cancel/{id}
    Description: Cancel an installment plan.
    Related: GET /v1/installment-plans/{id}

  - POST /v1/installment-plans/send-reminder/{id}
    Description: Notify a user about an installment plan.
    Related: GET /v1/installment-plans/{id}
```

--------------------------------

### Installment Plans API

Source: https://useascend.readme.io/reference/sendonetimepaymentreminder

Endpoints for managing installment plans, including creation, retrieval, updates, archiving, and handling returns. Supports various operations like getting, creating, updating, and voiding returns.

```APIDOC
InstallmentPlans:
  GET /v1/installment_plans/{id}
    - Retrieves a specific installment plan.
    - Parameters:
      - id: The unique identifier of the installment plan.

  POST /v1/installment_plans
    - Creates a new installment plan.
    - Parameters:
      - (Request Body): Details of the installment plan to create.

  PATCH /v1/installment_plans
    - Updates an existing installment plan.
    - Parameters:
      - (Request Body): Updated details for the installment plan.

  DELETE /v1/installment_plans/{id}/archive
    - Archives a specific installment plan.
    - Parameters:
      - id: The unique identifier of the installment plan to archive.

Returns:
  GET /v1/installment_plans/{id}/returns
    - Lists all returns associated with an installment plan.
    - Parameters:
      - id: The unique identifier of the installment plan.

  POST /v1/installment_plans/{id}/returns
    - Creates a new return for an installment plan.
    - Parameters:
      - id: The unique identifier of the installment plan.
      - (Request Body): Details of the return to create.

  GET /v1/installment_plans/{id}/returns/{return_id}
    - Retrieves a specific return for an installment plan.
    - Parameters:
      - id: The unique identifier of the installment plan.
      - return_id: The unique identifier of the return.

  PATCH /v1/installment_plans/{id}/returns/{return_id}
    - Updates a specific return for an installment plan.
    - Parameters:
      - id: The unique identifier of the installment plan.
      - return_id: The unique identifier of the return.
      - (Request Body): Updated details for the return.

  DELETE /v1/installment_plans/{id}/returns/{return_id}
    - Voids a specific return for an installment plan.
    - Parameters:
      - id: The unique identifier of the installment plan.
      - return_id: The unique identifier of the return to void.

  POST /v1/installment_plans/{id}/cancel
    - Cancels an installment plan.
    - Parameters:
      - id: The unique identifier of the installment plan to cancel.

  POST /v1/installment_plans/send_reminder
    - Sends a reminder notification to a user for an installment plan.
    - Parameters:
      - (Request Body): Details for sending the reminder.
```

--------------------------------

### Programs API

Source: https://useascend.readme.io/reference/archiveinstallmentplan

Endpoints for managing programs, including listing, creating, retrieving, updating, archiving, generating payment proposals, and notifying users.

```APIDOC
List Programs (GET) - /reference/listprograms
  - Retrieves a list of programs.
```

```APIDOC
Generate payment proposal document for a program (POST) - /reference/createpaymentproposal
  - Generates a payment proposal document for a program.
```

```APIDOC
Create Program (POST) - /reference/createprogram
  - Creates a new program.
```

```APIDOC
Get Program (GET) - /reference/getprogram
  - Retrieves a specific program.
```

```APIDOC
Update program (PATCH) - /reference/updateprogram
  - Updates an existing program.
```

```APIDOC
Archive Program (DELETE) - /reference/deleteprogram
  - Archives a program.
```

```APIDOC
Notify User (POST) - /reference/notifyinsured
  - Notifies a user associated with a program.
```

```APIDOC
Loan Payoff Estimate (POST) - /reference/createloanpayoffestimate
  - Creates a loan payoff estimate for a program.
```

--------------------------------

### Create Premium Reducing Endorsement

Source: https://useascend.readme.io/reference/post_v1-premium-reducing-endorsements

Example of how to create a premium reducing endorsement using the API. Supports multiple programming languages.

```Shell
curl -X POST \
  https://sandbox.api.useascend.com/v1/premium_reducing_endorsements \
  -H 'Authorization: Bearer YOUR_API_KEY' \
  -H 'Content-Type: application/json' \
  -d '{ "some": "data" }'
```

```Node
const axios = require('axios');

const createEndorsement = async () => {
  try {
    const response = await axios.post('https://sandbox.api.useascend.com/v1/premium_reducing_endorsements', {
      some: 'data'
    }, {
      headers: {
        'Authorization': 'Bearer YOUR_API_KEY',
        'Content-Type': 'application/json'
      }
    });
    console.log(response.data);
  } catch (error) {
    console.error('Error creating endorsement:', error);
  }
};

createEndorsement();
```

```Ruby
require 'httparty'

response = HTTParty.post('https://sandbox.api.useascend.com/v1/premium_reducing_endorsements', 
  body: { some: 'data' }.to_json, 
  headers: {
    'Authorization' => 'Bearer YOUR_API_KEY',
    'Content-Type' => 'application/json'
  }
)

puts response.body
```

```PHP
<?php

$url = 'https://sandbox.api.useascend.com/v1/premium_reducing_endorsements';
$data = json_encode(['some' => 'data']);

$ch = curl_init($url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
curl_setopt($ch, CURLOPT_HTTPHEADER, [
    'Authorization: Bearer YOUR_API_KEY',
    'Content-Type: application/json'
]);

$response = curl_exec($ch);

if (curl_errno($ch)) {
    echo 'Error:' . curl_error($ch);
}

curl_close($ch);

echo $response;
?>
```

```Python
import requests

url = 'https://sandbox.api.useascend.com/v1/premium_reducing_endorsements'
headers = {
    'Authorization': 'Bearer YOUR_API_KEY',
    'Content-Type': 'application/json'
}
data = {
    'some': 'data'
}

response = requests.post(url, json=data, headers=headers)

print(response.json())
```

--------------------------------

### Void Return Example

Source: https://useascend.readme.io/reference/delete_v1-installment-plans-installment-plan-id-returns-return-id

Demonstrates how to void a return for an installment plan using various programming languages. Requires authentication via Bearer token.

```Shell
curl -X DELETE \
  https://sandbox.api.useascend.com/v1/installment_plans/{installment_plan_id}/returns/{return_id} \
  -H "Authorization: Bearer YOUR_API_KEY"
```

```Node
const axios = require('axios');

const voidReturn = async (installmentPlanId, returnId, apiKey) => {
  try {
    const response = await axios.delete(`https://sandbox.api.useascend.com/v1/installment_plans/${installmentPlanId}/returns/${returnId}`, {
      headers: {
        'Authorization': `Bearer ${apiKey}`
      }
    });
    console.log('Return voided successfully:', response.data);
    return response.data;
  } catch (error) {
    console.error('Error voiding return:', error.response ? error.response.data : error.message);
    throw error;
  }
};

// Example usage:
// voidReturn('some_plan_id', 'some_return_id', 'YOUR_API_KEY');
```

```Ruby
require 'httparty'

url = "https://sandbox.api.useascend.com/v1/installment_plans/#{installment_plan_id}/returns/#{return_id}"
headers = { "Authorization": "Bearer YOUR_API_KEY" }

response = HTTParty.delete(url, headers: headers)

if response.success?
  puts "Return voided successfully: #{response.body}"
else
  puts "Error voiding return: #{response.code} - #{response.message}"
end

# Example usage:
# installment_plan_id = 'some_plan_id'
# return_id = 'some_return_id'
# void_return(installment_plan_id, return_id)
```

```PHP
<?php

$installmentPlanId = 'some_plan_id';
$returnId = 'some_return_id';
$apiKey = 'YOUR_API_KEY';

$url = "https://sandbox.api.useascend.com/v1/installment_plans/{$installmentPlanId}/returns/{$returnId}";

$ch = curl_init($url);
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "DELETE");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, array(
    "Authorization: Bearer {$apiKey}"
));

$response = curl_exec($ch);

if (curl_errno($ch)) {
    echo 'Error:' . curl_error($ch);
} else {
    echo 'Return voided successfully: ' . $response;
}

c_close($ch);
?>

<?php
// Example usage:
// $installmentPlanId = 'some_plan_id';
// $returnId = 'some_return_id';
// $apiKey = 'YOUR_API_KEY';
// voidReturn($installmentPlanId, $returnId, $apiKey);
?>

```

```Python
import requests

def void_return(installment_plan_id, return_id, api_key):
    url = f"https://sandbox.api.useascend.com/v1/installment_plans/{installment_plan_id}/returns/{return_id}"
    headers = {
        "Authorization": f"Bearer {api_key}"
    }
    
    try:
        response = requests.delete(url, headers=headers)
        response.raise_for_status()  # Raise an exception for bad status codes
        print(f"Return voided successfully: {response.json()}")
        return response.json()
    except requests.exceptions.RequestException as e:
        print(f"Error voiding return: {e}")
        return None

# Example usage:
# installment_plan_id = 'some_plan_id'
# return_id = 'some_return_id'
# api_key = 'YOUR_API_KEY'
# void_return(installment_plan_id, return_id, api_key)
```

--------------------------------

### Create Invoice

Source: https://useascend.readme.io/reference/createinvoice

Demonstrates how to create a new invoice using the Ascend API. Includes examples for various programming languages and shell.

```APIDOC
POST https://sandbox.api.useascend.com/v1/invoices

Description:
  Creates a new invoice.

Base URL:
  https://sandbox.api.useascend.com/v1/invoices

Authentication:
  Bearer Token

Response:
  Click 'Try It!' to see the response.
```

```Shell
curl -X POST \
  https://sandbox.api.useascend.com/v1/invoices \
  -H 'Authorization: Bearer YOUR_API_KEY'
```

```Node
const axios = require('axios');

const createInvoice = async () => {
  try {
    const response = await axios.post('https://sandbox.api.useascend.com/v1/invoices', {}, {
      headers: {
        'Authorization': 'Bearer YOUR_API_KEY'
      }
    });
    console.log(response.data);
  } catch (error) {
    console.error(error);
  }
};

createInvoice();
```

```Ruby
require 'httparty'

response = HTTParty.post('https://sandbox.api.useascend.com/v1/invoices', headers: { 'Authorization' => 'Bearer YOUR_API_KEY' })
puts response.body
```

```PHP
<?php

$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, 'https://sandbox.api.useascend.com/v1/invoices');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_POST, 1);

$headers = [
  'Authorization: Bearer YOUR_API_KEY'
];
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);

$response = curl_exec($ch);

if (curl_errno($ch)) {
    echo 'Error:' . curl_error($ch);
}
curl_close($ch);

echo $response;
?>
```

```Python
import requests

url = "https://sandbox.api.useascend.com/v1/invoices"
headers = {
    "Authorization": "Bearer YOUR_API_KEY"
}

response = requests.post(url, headers=headers)
print(response.json())
```

--------------------------------

### Update Installment

Source: https://useascend.readme.io/reference/patch_v1-installments-id

Updates an existing installment record. This operation requires the installment ID and allows modification of installment details.

```Shell
curl -X PATCH "https://sandbox.api.useascend.com/v1/installments/{id}" \
-H "Authorization: Bearer YOUR_ACCESS_TOKEN" \
-H "Content-Type: application/json" \
-d '{ "field": "value" }'
```

```Node
const axios = require('axios');

const updateInstallment = async (id, data) => {
  try {
    const response = await axios.patch(`https://sandbox.api.useascend.com/v1/installments/${id}`, data, {
      headers: {
        'Authorization': 'Bearer YOUR_ACCESS_TOKEN',
        'Content-Type': 'application/json'
      }
    });
    return response.data;
  } catch (error) {
    console.error('Error updating installment:', error);
    throw error;
  }
};
```

```Ruby
require 'httparty'

url = "https://sandbox.api.useascend.com/v1/installments/#{id}"
headers = { 'Authorization' => 'Bearer YOUR_ACCESS_TOKEN', 'Content-Type' => 'application/json' }
body = { field: 'value' }.to_json

response = HTTParty.patch(url, headers: headers, body: body)
puts response.parsed_response
```

```PHP
$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, "https://sandbox.api.useascend.com/v1/installments/{$id}");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "PATCH");
curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode(['field' => 'value']));

$headers = array();
$headers[] = "Authorization: Bearer YOUR_ACCESS_TOKEN";
$headers[] = "Content-Type: application/json";
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);

$response = curl_exec($ch);

if (curl_errno($ch)) {
    echo 'Error:' . curl_error($ch);
}
curl_close($ch);

echo $response;
```

```Python
import requests

url = f"https://sandbox.api.useascend.com/v1/installments/{id}"
headers = {
    'Authorization': 'Bearer YOUR_ACCESS_TOKEN',
    'Content-Type': 'application/json'
}
data = {
    'field': 'value'
}

response = requests.patch(url, headers=headers, json=data)
print(response.json())
```

--------------------------------

### Cancelation Returns API Endpoints

Source: https://useascend.readme.io/reference/cancelinstallmentplan

Manage cancelation and return processes, including listing, creating, retrieving, and updating cancelation returns.

```APIDOC
Cancelation Returns:
  List Cancelation Returns (GET): /reference/getcancelationreturns
    - Description: Retrieves a list of cancelation returns.
    - Parameters: (Details not provided in source)
    - Returns: (Details not provided in source)

  Create Cancelation Return (POST): /reference/createcancelationreturns
    - Description: Creates a new cancelation return.
    - Parameters: (Details not provided in source)
    - Returns: (Details not provided in source)

  Get Cancelation Return (GET): /reference/getcancelationreturn
    - Description: Retrieves details of a specific cancelation return.
    - Parameters: (Details not provided in source)
    - Returns: (Details not provided in source)

  Update Cancelation Returns (PATCH): /reference/updatecancelationreturn
    - Description: Updates an existing cancelation return.
    - Parameters: (Details not provided in source)
    - Returns: (Details not provided in source)
```