### POST /check-credentials

Source: https://docs.boomerangme.cards/marketplace/create-an-application

Verifies the user credentials provided during the application installation process.

```APIDOC
## POST /check-credentials

### Description
This method is used to verify the user credentials specified when installing the application.

### Method
POST

### Endpoint
/check-credentials

### Parameters
#### Request Body
- **credentials** (array) - Required - Merchant credentials containing name and value pairs.

### Request Example
{
  "credentials": [
    { "name": "api_key", "value": "example_key" }
  ]
}

### Response
#### Success Response (200)
- **isValid** (boolean) - Indicates if the provided credentials are valid.

#### Response Example
{
  "isValid": true
}
```

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

### POST /get-inventory

Source: https://docs.boomerangme.cards/marketplace/create-an-application

Retrieves the inventory tree, such as a restaurant menu, used during installation or rule triggering.

```APIDOC
## POST /get-inventory

### Description
This method is used to retrieve an inventory tree (for example, a restaurant menu). The method is used during application installation and when inventory-based rules are triggered.

### Method
POST

### Endpoint
/get-inventory

### Parameters
#### Request Body
- **credentials** (array) - Required - Merchant credentials used to authorize the inventory request.

### Request Example
{
  "credentials": [
    { "name": "api_key", "value": "example_key" }
  ]
}

### Response
#### Success Response (200)
- **inventoryItems** (array) - A list of inventory items or groups.

#### Response Example
{
  "inventoryItems": [
    {
      "type": "group",
      "id": "1",
      "title": "Main Menu",
      "items": []
    }
  ]
}
```

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

### Retrieve Application Inventory

Source: https://docs.boomerangme.cards/marketplace/create-an-application

This endpoint fetches the inventory tree, such as a restaurant menu, required for application installation and rule triggering. It returns a hierarchical structure of inventory items.

```JSON
{"openapi":"3.0.0","info":{"title":"Marketplace API","version":"1.0.0"},"servers":[{"url":"https://app-domain.example"}],"security":[],"paths":{"/get-inventory":{"post":{"summary":"Get Inventory","description":"This method is used to retrieve an inventory tree (for example, a restaurant menu).\nThe method is used during application installation and when inventory-based rules are triggered.","operationId":"post_app_api_v2_marketplace_stabdoc_getinventory","requestBody":{"content":{"application/json":{"schema":{"$ref":"#/components/schemas/GetInventoryRequest"}}}},"responses":{"200":{"description":"Successful response","content":{"application/json":{"schema":{"$ref":"#/components/schemas/GetInventoryResponse"}}}}}}}},"components":{"schemas":{"GetInventoryRequest":{"properties":{"credentials":{"description":"Merchant credentials.","type":"array","items":{"properties":{"name":{"type":"string"},"value":{"type":"string"}},"type":"object"}}},"type":"object"},"GetInventoryResponse":{"properties":{"inventoryItems":{"type":"array","items":{"$ref":"#/components/schemas/InventoryItem"}}},"type":"object"},"InventoryItem":{"required":["type","id","title"],"properties":{"type":{"type":"string","enum":["group","item"],"nullable":true},"id":{"type":"string","nullable":true},"title":{"type":"string","nullable":true},"items":{"type":"array","items":{"$ref":"#/components/schemas/InventoryItem"},"nullable":true}},"type":"object"}}}}
```