### POST /api/v1/muni_pricing_latest Request Example

Source: https://docs.terrapinfinance.com/api-endpoints/us-municipal-bond-latest-pricing-data

This example demonstrates how to structure a POST request to the /api/v1/muni_pricing_latest endpoint. It includes the `as_of_date` and a list of `isins` for which pricing data is requested.

```json
{
  "as_of_date": "2025-08-11",
  "isins": [
    "US828641ZF03"
  ]
}
```

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

### POST /api/v1/muni_pricing_latest Response Example

Source: https://docs.terrapinfinance.com/api-endpoints/us-municipal-bond-latest-pricing-data

This is an example of a successful response from the /api/v1/muni_pricing_latest endpoint. It contains pricing data for the requested ISINs, including trade details and yield information.

```json
{
  "data": [
    {
      "amount": 10000,
      "id": "pPwoatVrqhKC8LdABwjqiQ",
      "is_alt_trading_system": false,
      "is_cancelled": false,
      "is_list_offering_price": false,
      "is_non_transaction_compensation": false,
      "is_weighted_avg_price_trade": false,
      "is_when_issued_trade": false,
      "isin": "US828641ZF03",
      "price": 103.835,
      "settlement_date": "2025-08-05",
      "trade_datetime": "2025-08-04T18:48:08",
      "trade_type": "customer_bought",
      "ytc_continuous": 4.4593,
      "ytc_money_market": null,
      "ytc_semi_annual": 4.5094,
      "ytm_continuous": 4.92084,
      "ytm_money_market": null,
      "ytm_semi_annual": 4.9819
    }
  ],
  "total": 1
}
```

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

### Cash Flows (Government and Corporate)

Source: https://docs.terrapinfinance.com/llms.txt

Get cash flow schedules for fixed or zero rate bonds.

```APIDOC
## Cash Flows (Government and Corporate)

### Description
Get cash flow schedules for fixed or zero rate bonds.

### Method
GET

### Endpoint
/government-and-corporate-cashflows

### Parameters
#### Query Parameters
- **isin** (string) - Required - The ISIN of the bond.

### Response
#### Success Response (200)
- **cash_flows** (array[object]) - A list of cash flow events.
  - **date** (string) - The date of the cash flow (YYYY-MM-DD).
  - **amount** (number) - The amount of the cash flow.
  - **type** (string) - The type of cash flow (e.g., 'coupon', 'principal').
```

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

### Cash Flows (US Agency)

Source: https://docs.terrapinfinance.com/llms.txt

Get cash flow schedules for fixed or zero rate bonds.

```APIDOC
## Cash Flows (US Agency)

### Description
Get cash flow schedules for fixed or zero rate bonds.

### Method
GET

### Endpoint
/us-agency-cashflows

### Parameters
#### Query Parameters
- **isin** (string) - Required - The ISIN of the bond.

### Response
#### Success Response (200)
- **cash_flows** (array[object]) - A list of cash flow events.
  - **date** (string) - The date of the cash flow (YYYY-MM-DD).
  - **amount** (number) - The amount of the cash flow.
  - **type** (string) - The type of cash flow (e.g., 'coupon', 'principal').
```

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

### Reference Data (Government and Corporate)

Source: https://docs.terrapinfinance.com/llms.txt

Get full government and corporate bond reference data for a given set of ISINs.

```APIDOC
## Reference Data (Government and Corporate)

### Description
Get full government and corporate bond reference data for a given set of ISINs.

### Method
GET

### Endpoint
/government-and-corporate-reference-data

### Parameters
#### Query Parameters
- **isins** (array[string]) - Required - A list of ISINs.

### Response
#### Success Response (200)
- **reference_data** (array[object]) - Reference data for the provided ISINs.
  - **isin** (string) - The ISIN of the bond.
  - **issuer_name** (string) - The name of the issuer.
  - **coupon** (number) - The coupon rate of the bond.
  - **maturity_date** (string) - The maturity date of the bond (YYYY-MM-DD).
  - **currency** (string) - The currency of the bond.
  - **ticker** (string) - The ticker symbol of the bond.
  - **other_fields** (object) - Additional reference data fields.
```

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

### Latest Pricing (Government and Corporate)

Source: https://docs.terrapinfinance.com/llms.txt

Get latest end of day government and corporate bond pricing data for a given set of ISINs.

```APIDOC
## Latest Pricing (Government and Corporate)

### Description
Get latest end of day government and corporate bond pricing data for a given set of ISINs.

### Method
GET

### Endpoint
/government-and-corporate-latest-pricing-data

### Parameters
#### Query Parameters
- **isins** (array[string]) - Required - A list of ISINs.

### Response
#### Success Response (200)
- **latest_prices** (array[object]) - Latest pricing data for the provided ISINs.
  - **isin** (string) - The ISIN of the bond.
  - **date** (string) - The date of the latest pricing data (YYYY-MM-DD).
  - **price** (number) - The latest end of day price.
  - **yield** (number) - The latest end of day yield.
```

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

### Get Bond Reference Data

Source: https://docs.terrapinfinance.com/api-endpoints/government-and-corporate-reference-data

This endpoint allows you to fetch detailed reference data for a list of government and corporate bonds by providing their ISINs.

```APIDOC
## POST /api/v1/bond_reference

### Description
Get full government and corporate bond reference data for a given set of ISINs.

### Method
POST

### Endpoint
/api/v1/bond_reference

### Request Body
- **isins** (array[string]) - Required - International Securities Identification Number (ISIN), unique 12-character code for the security.

### Request Example
```json
{
  "isins": [
    "XS2724510792"
  ]
}
```

### Response
#### Success Response (200)
- **data** (array) - List of response data objects, often capped to 1000.
  - **asset_class** (string) - Asset class of the bond.
  - **cfi_code** (string) - CFI code of the bond.
  - **composite_issue_rating** (string) - Composite issue rating.
  - **composite_issuer_rating** (string) - Composite issuer rating.
  - **country** (string) - Country of issuance.
  - **coupon** (number) - Coupon rate of the bond.
  - **coupon_frequency** (number) - Frequency of coupon payments.
  - **currency** (string) - Currency of the bond.
  - **figi** (string) - FIGI identifier.
  - **first_coupon_date** (string) - Date of the first coupon payment.
  - **handle** (any) - Handle information.
  - **industry_group** (string) - Industry group of the issuer.
  - **integral_multiple** (number) - Integral multiple for trading.
  - **interest_accrual_convention** (string) - Interest accrual convention.
  - **interest_accrual_date** (string) - Date for interest accrual.
  - **interest_type** (string) - Type of interest (e.g., fixed, variable).
  - **is_144a** (boolean) - Indicates if the bond is 144A.
  - **is_callable** (boolean) - Indicates if the bond is callable.
  - **is_covered** (any) - Indicates if the bond is covered.
  - **is_green** (any) - Indicates if the bond is green.
  - **is_inflation_linked** (any) - Indicates if the bond is inflation-linked.
  - **is_outstanding** (boolean) - Indicates if the bond is outstanding.
  - **is_puttable** (boolean) - Indicates if the bond is puttable.
  - **is_regs** (boolean) - Indicates if the bond is registered.
  - **isin** (string) - ISIN of the bond.
  - **issue_date** (string) - Date of issuance.
  - **issue_rating_group** (string) - Issue rating group.
  - **issued_amount** (number) - Amount issued.
  - **issuer_name** (string) - Name of the issuer.
  - **issuer_rating_group** (string) - Issuer rating group.
  - **issuer_type** (string) - Type of the issuer.
  - **lei** (string) - Legal Entity Identifier of the issuer.
  - **lei_direct_parent** (string) - LEI of the direct parent.
  - **lei_ultimate_parent** (string) - LEI of the ultimate parent.
  - **maturity_date** (string) - Date of maturity.
  - **maturity_type** (string) - Type of maturity.
  - **minimum_denomination** (number) - Minimum denomination.
  - **name** (string) - Name of the bond.
  - **rank** (string) - Rank of the bond.
  - **registration_type** (string) - Type of registration.
  - **sector** (string) - Sector of the bond.
  - **ticker** (string) - Ticker symbol.
- **total** (number) - Total number of results.

#### Response Example
```json
{
  "data": [
    {
      "asset_class": "medium-term note",
      "cfi_code": "DTFUFB",
      "composite_issue_rating": "BBB+",
      "composite_issuer_rating": "BBB",
      "country": "Greece",
      "coupon": 5.875,
      "coupon_frequency": 1,
      "currency": "EUR",
      "figi": "BBG01K89S0G8",
      "first_coupon_date": "2024-11-28",
      "handle": null,
      "industry_group": "banks",
      "integral_multiple": 100000,
      "interest_accrual_convention": "act/act (ICMA)",
      "interest_accrual_date": "2023-11-28",
      "interest_type": "variable rate",
      "is_144a": true,
      "is_callable": true,
      "is_covered": null,
      "is_green": null,
      "is_inflation_linked": null,
      "is_outstanding": true,
      "is_puttable": false,
      "is_regs": true,
      "isin": "XS2724510792",
      "issue_date": "2023-11-28",
      "issue_rating_group": "investment_grade",
      "issued_amount": 500000000,
      "issuer_name": "EUROBANK SA",
      "issuer_rating_group": "investment_grade",
      "issuer_type": "corporate",
      "lei": "213800KGF4EFNUQKAT69",
      "lei_direct_parent": "JEUVK5RWVJEN8W0C9M24",
      "lei_ultimate_parent": "JEUVK5RWVJEN8W0C9M24",
      "maturity_date": "2029-11-28",
      "maturity_type": "fixed",
      "minimum_denomination": 100000,
      "name": "EUROBANK SA FRN 2029",
      "rank": "senior unsecured",
      "registration_type": "bearer",
      "sector": "financials",
      "ticker": "EUROB V5.875 11/28/29 EMTN"
    }
  ],
  "total": 1
}
```
```

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

### Bulk Municipal Historical Pricing Data

Source: https://docs.terrapinfinance.com/api-endpoints/us-municipal-bond-daily-historical-pricing-data

Get historical US municipal bond pricing data for all ISINs at a given day.

```APIDOC
## POST /api/v1/muni_pricing_daily_history

### Description
Get historical US municipal bond pricing data for all ISINs at a given day.

### Method
POST

### Endpoint
https://terrapinfinance.com/api/v1/muni_pricing_daily_history

### Parameters
#### Request Body
- **trade_date** (string) - Required - Trade date in ISO-8601 format (YYYY-MM-DD).

### Request Example
```json
{
  "trade_date": "2025-07-01"
}
```

### Response
#### Success Response (200)
- **data** (array) - List of response data objects, often capped to 1000.
  - **amount** (number) - Amount of the trade, the total face value (principal) of bonds traded in this transaction.
  - **id** (string) - Unique trade identifier.
  - **is_alt_trading_system** (boolean) - Whether this is an alternative trading system (ATS) trade.
  - **is_cancelled** (boolean) - Whether the trade has been cancelled.
  - **is_list_offering_price** (boolean) - Whether this is a list offering price.
  - **is_non_transaction_compensation** (boolean) - Whether this trade involves non-transactional compensation.
  - **is_weighted_avg_price_trade** (boolean) - Whether this is a weighted average price trade.
  - **is_when_issued_trade** (boolean) - Whether this is a when-issued trade.
  - **isin** (string) - ISIN of the bond.
  - **price** (number) - The price of the bond.
  - **settlement_date** (string) - Settlement date of the trade.
  - **trade_datetime** (string) - The date and time the trade occurred.
  - **trade_type** (string) - The type of trade (e.g., customer_bought).
  - **ytc_continuous** (number) - Yield to Call (continuous).
  - **ytc_money_market** (number) - Yield to Call (money market).
  - **ytc_semi_annual** (number) - Yield to Call (semi-annual).
  - **ytm_continuous** (number) - Yield to Maturity (continuous).
  - **ytm_money_market** (number) - Yield to Maturity (money market).
  - **ytm_semi_annual** (number) - Yield to Maturity (semi-annual).
- **total** (number) - Total number of records available.

#### Response Example
```json
{
  "data": [
    {
      "amount": 100000,
      "id": "rnCB5ECbo3ZUetZO4g5jRA",
      "is_alt_trading_system": false,
      "is_cancelled": false,
      "is_list_offering_price": false,
      "is_non_transaction_compensation": false,
      "is_weighted_avg_price_trade": false,
      "is_when_issued_trade": false,
      "isin": "US38656NAD84",
      "price": 75.391,
      "settlement_date": "2025-07-01",
      "trade_datetime": "2025-07-01T00:00:00Z",
      "trade_type": "customer_bought",
      "ytc_continuous": 9.3783,
      "ytc_money_market": null,
      "ytc_semi_annual": 9.6017,
      "ytm_continuous": 5.77235,
      "ytm_money_market": null,
      "ytm_semi_annual": 5.8565
    },
    {
      "amount": 500000,
      "id": "2krB5rQuZbbM-bYZ02g7rw",
      "is_alt_trading_system": false,
      "is_cancelled": false,
      "is_list_offering_price": false,
      "is_non_transaction_compensation": false,
      "is_weighted_avg_price_trade": false,
      "is_when_issued_trade": false,
      "isin": "US05355ABT34",
      "price": 94.947,
      "settlement_date": "2025-07-01",
      "trade_datetime": "2025-07-01T00:00:00Z",
      "trade_type": "customer_bought",
      "ytc_continuous": 6.2244,
      "ytc_money_market": null,
      "ytc_semi_annual": 6.3223,
      "ytm_continuous": 5.782,
      "ytm_money_market": null,
      "ytm_semi_annual": 5.8664
    }
  ],
  "total": 2
}
```
```

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

### Historical Pricing (Government and Corporate)

Source: https://docs.terrapinfinance.com/llms.txt

Get historical government and corporate bond end of day pricing data for a given ISIN.

```APIDOC
## Historical Pricing (Government and Corporate)

### Description
Get historical government and corporate bond end of day pricing data for a given ISIN.

### Method
GET

### Endpoint
/government-and-corporate-historical-pricing-data

### Parameters
#### Query Parameters
- **isin** (string) - Required - The ISIN of the bond.
- **start_date** (string) - Optional - The start date for the historical data (YYYY-MM-DD).
- **end_date** (string) - Optional - The end date for the historical data (YYYY-MM-DD).

### Response
#### Success Response (200)
- **pricing_data** (array[object]) - Historical pricing data.
  - **date** (string) - The date of the pricing data (YYYY-MM-DD).
  - **price** (number) - The end of day price.
  - **yield** (number) - The end of day yield.
```

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

### Latest Pricing (US Agency)

Source: https://docs.terrapinfinance.com/llms.txt

Get latest end of day US agency bond pricing data for a given set of ISINs.

```APIDOC
## Latest Pricing (US Agency)

### Description
Get latest end of day US agency bond pricing data for a given set of ISINs.

### Method
GET

### Endpoint
/us-agency-latest-pricing-data

### Parameters
#### Query Parameters
- **isins** (array[string]) - Required - A list of ISINs.

### Response
#### Success Response (200)
- **latest_prices** (array[object]) - Latest pricing data for the provided ISINs.
  - **isin** (string) - The ISIN of the bond.
  - **date** (string) - The date of the latest pricing data (YYYY-MM-DD).
  - **price** (number) - The latest end of day price.
  - **yield** (number) - The latest end of day yield.
```

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

### Daily Historical Pricing (US Municipal Bonds)

Source: https://docs.terrapinfinance.com/llms.txt

Get historical US municipal bond pricing data for all ISINs at a given day.

```APIDOC
## Daily Historical Pricing (US Municipal Bonds)

### Description
Get historical US municipal bond pricing data for all ISINs at a given day.

### Method
GET

### Endpoint
/us-municipal-bond-daily-historical-pricing-data

### Parameters
#### Query Parameters
- **date** (string) - Required - The date for which to retrieve pricing data (YYYY-MM-DD).

### Response
#### Success Response (200)
- **pricing_data** (array[object]) - Historical pricing data for the specified date.
  - **isin** (string) - The ISIN of the bond.
  - **price** (number) - The end of day price.
  - **yield** (number) - The end of day yield.
```

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

### Latest Pricing (US Municipal Bonds)

Source: https://docs.terrapinfinance.com/llms.txt

Get the latest end of day US municipal bond pricing data for a given set of ISINs.

```APIDOC
## Latest Pricing (US Municipal Bonds)

### Description
Get the latest end of day US municipal bond pricing data for a given set of ISINs.

### Method
GET

### Endpoint
/us-municipal-bond-latest-pricing-data

### Parameters
#### Query Parameters
- **isins** (array[string]) - Required - A list of ISINs.

### Response
#### Success Response (200)
- **latest_prices** (array[object]) - Latest pricing data for the provided ISINs.
  - **isin** (string) - The ISIN of the bond.
  - **date** (string) - The date of the latest pricing data (YYYY-MM-DD).
  - **price** (number) - The latest end of day price.
  - **yield** (number) - The latest end of day yield.
```

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

### Get Bond Pricing History

Source: https://docs.terrapinfinance.com/api-endpoints/government-and-corporate-historical-pricing-data

Fetches historical government and corporate bond end-of-day pricing data for a given ISIN and date range.

```APIDOC
## POST /api/v1/bond_pricing_history

### Description
Get historical government and corporate bond end of day pricing data for a given ISIN.

### Method
POST

### Endpoint
/api/v1/bond_pricing_history

### Parameters
#### Request Body
- **end_date** (string) - Required - Maximum trade date in ISO-8601 format (YYYY-MM-DD).
- **isin** (string) - Required - International Securities Identification Number (ISIN), unique 12-character code for the security.
- **start_date** (string) - Required - Minimum trade date in ISO-8601 format (YYYY-MM-DD).

### Request Example
{
  "end_date": "2024-01-01",
  "isin": "XS1610682764",
  "start_date": "2023-12-01"
}

### Response
#### Success Response (200)
- **data** (array) - List of response data objects, often capped to 1000.
  - **convexity** (number) - Macaulay convexity, as calculated on `date` at `price`.
  - **date** (string) - Trade date in ISO-8601 format (YYYY-MM-DD).
  - **duration** (number) - Macaulay duration, as calculated on `date` at `price`.
  - **estimated_volume** (number) - Estimated notional traded volume of the bond at `date`.
  - **id** (string) - Unique identifier for the pricing record.
  - **isin** (string) - International Securities Identification Number.
  - **modified_duration** (number) - Modified duration, as calculated on `date` at `price`.
  - **price** (number) - The bond's price at the end of the trading day.
  - **yield_to_maturity** (number) - The bond's yield to maturity at the end of the trading day.
- **total** (number) - Total number of records available.

#### Response Example
{
  "data": [
    {
      "convexity": 0.19682,
      "date": "2023-12-18",
      "duration": 1.94584,
      "estimated_volume": 12000,
      "id": "F_w3S4wJYXQBNYd4HwEOKA",
      "isin": "XS1610682764",
      "modified_duration": 1.86347,
      "price": 97.40597,
      "yield_to_maturity": 4.4202
    },
    {
      "convexity": 0.21109,
      "date": "2023-12-22",
      "duration": 1.93499,
      "estimated_volume": 20000,
      "id": "1kRHbI9HVhbWvq-tv631Tg",
      "isin": "XS1610682764",
      "modified_duration": 1.85682,
      "price": 97.8,
      "yield_to_maturity": 4.2098
    }
  ],
  "total": 2
}
```

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

### Get US Agency Cashflows

Source: https://docs.terrapinfinance.com/api-endpoints/us-agency-cashflows

This endpoint retrieves cash flow schedules for fixed or zero-rate bonds. You can specify one or more International Securities Identification Numbers (ISINs) to get their respective cash flow data.

```APIDOC
## POST /api/v1/agency_cashflows

### Description
Get cash flow schedules for fixed or zero rate bonds.

### Method
POST

### Endpoint
/api/v1/agency_cashflows

### Parameters
#### Request Body
- **isins** (array[string]) - Required - International Securities Identification Number (ISIN), unique 12-character code for the security.

### Request Example
```json
{
  "isins": [
    "US3134H1HN66"
  ]
}
```

### Response
#### Success Response (200)
- **data** (array[object]) - List of response data objects, often capped to 1000.
  - **isin** (string) - The ISIN of the bond.
  - **cashflows** (array[object]) - List of cashflows for the bond.
    - **amount** (number) - Amount of the cashflow in the bond's currency.
    - **date** (string) - Date of the cashflow event in ISO-8601 format (YYYY-MM-DD).
    - **type** (string) - Type of cashflow: 'principal' or 'interest'.
- **total** (number) - Total number of results.

#### Response Example
```json
{
  "data": [
    {
      "cashflows": [
        {
          "amount": 2.75,
          "date": "2024-04-20",
          "type": "interest"
        },
        {
          "amount": 100,
          "date": "2028-10-20",
          "type": "principal"
        }
      ],
      "isin": "US3134H1HN66"
    }
  ],
  "total": 1
}
```
```

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

### Get Latest Municipal Bond Pricing Data

Source: https://docs.terrapinfinance.com/api-endpoints/us-municipal-bond-latest-pricing-data

This endpoint retrieves the latest end-of-day US municipal bond pricing data for a specified set of ISINs. You can optionally provide an 'as_of_date' to get data as of a particular date.

```APIDOC
## POST /api/v1/muni_pricing_latest

### Description
Get the latest end of day US municipal bond pricing data for a given set of ISINs.

### Method
POST

### Endpoint
/api/v1/muni_pricing_latest

### Parameters
#### Request Body
- **as_of_date** (string) - Optional - Set this date (in ISO-8601 format (YYYY-MM-DD)) to get the latest pricing data as of a specific date. When not set, the latest pricing data is returned.
- **isins** (array of strings) - Required - International Securities Identification Number (ISIN), unique 12-character code for the security.

### Request Example
```json
{
  "as_of_date": "2025-08-11",
  "isins": [
    "US828641ZF03"
  ]
}
```

### Response
#### Success Response (200)
- **data** (array) - List of response data objects, often capped to 1000.
  - **amount** (number) - Amount of the trade, the total face value (principal) of bonds traded in this transaction.
  - **id** (string) - Unique trade identifier.
  - **is_alt_trading_system** (boolean) - Whether this is an alternative trading system (ATS) trade.
  - **is_cancelled** (boolean) - Whether the trade has been cancelled.
  - **is_list_offering_price** (boolean) - Whether this is a list offering price.
  - **is_non_transaction_compensation** (boolean) - Whether this is a non-transactional compensation trade.
  - **is_weighted_avg_price_trade** (boolean) - Whether this is a weighted average price trade.
  - **is_when_issued_trade** (boolean) - Whether this is a when-issued trade.
  - **isin** (string) - The ISIN of the security.
  - **price** (number) - The price of the bond.
  - **settlement_date** (string) - The settlement date of the trade.
  - **trade_datetime** (string) - The date and time the trade occurred.
  - **trade_type** (string) - The type of trade (e.g., customer_bought).
  - **ytc_continuous** (number) - Yield to Call (continuous).
  - **ytc_money_market** (number) - Yield to Call (money market).
  - **ytc_semi_annual** (number) - Yield to Call (semi-annual).
  - **ytm_continuous** (number) - Yield to Maturity (continuous).
  - **ytm_money_market** (number) - Yield to Maturity (money market).
  - **ytm_semi_annual** (number) - Yield to Maturity (semi-annual).
- **total** (number) - Total number of results.

### Response Example
```json
{
  "data": [
    {
      "amount": 10000,
      "id": "pPwoatVrqhKC8LdABwjqiQ",
      "is_alt_trading_system": false,
      "is_cancelled": false,
      "is_list_offering_price": false,
      "is_non_transaction_compensation": false,
      "is_weighted_avg_price_trade": false,
      "is_when_issued_trade": false,
      "isin": "US828641ZF03",
      "price": 103.835,
      "settlement_date": "2025-08-05",
      "trade_datetime": "2025-08-04T18:48:08",
      "trade_type": "customer_bought",
      "ytc_continuous": 4.4593,
      "ytc_money_market": null,
      "ytc_semi_annual": 4.5094,
      "ytm_continuous": 4.92084,
      "ytm_money_market": null,
      "ytm_semi_annual": 4.9819
    }
  ],
  "total": 1
}
```
```

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

### Get US Agency Latest End of Day Pricing Data

Source: https://docs.terrapinfinance.com/api-endpoints/us-agency-latest-pricing-data

This endpoint retrieves the latest end-of-day pricing data for US agency bonds based on provided ISINs. You can optionally specify a date to get data as of that specific date.

```APIDOC
## POST /api/v1/agency_pricing_latest

### Description
Get latest end of day US agency bond pricing data for a given set of ISINs.

### Method
POST

### Endpoint
https://terrapinfinance.com/api/v1/agency_pricing_latest

### Parameters
#### Request Body
- **isins** (array[string]) - Required - International Securities Identification Number (ISIN), unique 12-character code for the security.
- **as_of_date** (string) - Optional - Set this date (in ISO-8601 format (YYYY-MM-DD)) to get the latest pricing data as of a specific date. When not set, the latest pricing data is returned.

### Request Example
```json
{
  "as_of_date": "2026-04-01",
  "isins": [
    "US3135G05Q27"
  ]
}
```

### Response
#### Success Response (200)
- **data** (array) - List of response data objects, often capped to 1000.
  - **convexity** (number) - Macaulay convexity, as calculated on `date` at `price`.
  - **date** (string) - Trade date in ISO-8601 format (YYYY-MM-DD).
  - **duration** (number) - Macaulay duration, as calculated on `date` at `price`.
  - **estimated_volume** (number) - Estimated notional traded volume of the bond at `date`. This value will necessarily be an underestimation of the actual traded volume due to the lack of complete reported trades.
  - **id** (string) - Unique trade identifier.
  - **isin** (string) - International Securities Identification Number (ISIN), unique 12-character code for the security.
  - **modified_duration** (number) - Modified duration.
  - **price** (number) - Bond price.
  - **yield_to_maturity** (number) - Yield to maturity.
- **total** (number) - Total number of results.

#### Response Example
```json
{
  "data": [
    {
      "convexity": 1.13809,
      "date": "2026-02-26",
      "duration": 4.35469,
      "estimated_volume": 140000,
      "id": "08iULjxKuBxsJl7kCIa5OQ",
      "isin": "US3135G05Q27",
      "modified_duration": 4.20544,
      "price": 89.23,
      "yield_to_maturity": 3.5489
    }
  ],
  "total": 1
}
```
```

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

### Authentication

Source: https://docs.terrapinfinance.com/api-endpoints/us-agency-historical-pricing-data

Details on how to authenticate API requests using bearer tokens.

```APIDOC
## Authentication

### Security Schemes
- **authorization** (http) - Scheme: bearer. This indicates that API requests should be authenticated using a Bearer token.
```

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

### Cash Flows (US Municipal Bonds)

Source: https://docs.terrapinfinance.com/llms.txt

Get cash flow schedules for US municipal bonds.

```APIDOC
## Cash Flows (US Municipal Bonds)

### Description
Get cash flow schedules for US municipal bonds.

### Method
GET

### Endpoint
/us-municipal-bond-cashflows

### Parameters
#### Query Parameters
- **isin** (string) - Required - The ISIN of the municipal bond.

### Response
#### Success Response (200)
- **cash_flows** (array[object]) - A list of cash flow events.
  - **date** (string) - The date of the cash flow (YYYY-MM-DD).
  - **amount** (number) - The amount of the cash flow.
  - **type** (string) - The type of cash flow (e.g., 'coupon', 'principal').
```

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

### Bond Interest Rate and Payment Schedule

Source: https://docs.terrapinfinance.com/api-endpoints/us-municipal-bond-reference

Details on how to specify bond interest rates, including fixed rates and variable rates tied to benchmarks, as well as periodic payment schedules.

```APIDOC
## Bond Interest Rate and Payment Schedule

### Description
This section details the structure for representing bond interest rates and periodic payment schedules. Interest rates can be a fixed number or a variable rate based on a benchmark with a spread. Payment schedules define the frequency and amount of payments.

### Parameters

#### interest_rate
- **type**: number or object - Required/Optional - The interest rate of the bond. Can be a fixed number or an object specifying benchmark, pct_of_benchmark, and spread_in_bps.
  - **benchmark** (string) - Description for benchmark
  - **pct_of_benchmark** (number) - Required/Optional - Percentage of the benchmark rate.
  - **spread_in_bps** (number) - Required/Optional - Spread in basis points.

#### periodic_schedule
- **type**: object - Required/Optional - Defines the periodic payment schedule.
  - **period_amount** (integer) - Required - The amount to be paid each period.
  - **period_type** (string) - Required - The type of period (e.g., 'month', 'week').
  - **until** (string) - Required/Optional - The date until which the schedule is valid (format: date).

#### payment_date
- **type**: object - Required - Details about the payment date, including day of week, month, week of month, and year.
  - **day_of_week** (integer) - Required - The day of the week.
  - **month** (integer) - Required - The month.
  - **week_of_month** (integer) - Required - The week of the month.
  - **year** (integer) - Required/Optional - The year.

### Request Example
```json
{
  "interest_rate": {
    "benchmark": "SOFR",
    "spread_in_bps": 50
  },
  "payment_date": {
    "day_of_week": 3,
    "month": 6,
    "week_of_month": 2,
    "year": 2024
  },
  "periodic_schedule": {
    "period_amount": 1000,
    "period_type": "month",
    "until": "2025-12-31"
  }
}
```

### Response Example
```json
{
  "interest_rate": {
    "benchmark": "SOFR",
    "spread_in_bps": 50
  },
  "payment_date": {
    "day_of_week": 3,
    "month": 6,
    "week_of_month": 2,
    "year": 2024
  },
  "periodic_schedule": {
    "period_amount": 1000,
    "period_type": "month",
    "until": "2025-12-31"
  }
}
```
```

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

### POST /api/v1/muni_price_to_yield

Source: https://docs.terrapinfinance.com/api-endpoints/us-municipal-bond-price-to-yield

Calculate yield metrics for municipal securities based on price and settlement date.

```APIDOC
## POST /api/v1/muni_price_to_yield

### Description
Calculate yield metrics for municipal securities based on price and settlement date.

### Method
POST

### Endpoint
/api/v1/muni_price_to_yield

### Parameters
#### Request Body
- **isin** (string) - Required - International Securities Identification Number (ISIN), unique 12-character code for the security.
- **trade_data** (array) - Required - An array of trade data objects.
  - **price** (number) - Required - Price at which to calculate metrics, expressed as a percentage of the bond's face value.
  - **settlement_date** (string) - Required - Settlement date at which to calculate metrics in ISO-8601 format (YYYY-MM-DD).

### Request Example
```json
[
  {
    "isin": "US005824LP01",
    "trade_data": [
      {
        "price": 101.78,
        "settlement_date": "2025-01-01"
      }
    ]
  }
]
```

### Response
#### Success Response (200)
- **data** (array) - List of response data objects.
  - **isin** (string) - International Securities Identification Number (ISIN), unique 12-character code for the security.
  - **trade_data** (array) - An array of calculated trade data.
    - **price** (number) - Price at which to calculate metrics.
    - **settlement_date** (string) - Settlement date at which to calculate metrics.
    - **ytc_continuous** (number) - Yield to Call (continuous).
    - **ytc_money_market** (number) - Yield to Call (money market).
    - **ytc_semi_annual** (number) - Yield to Call (semi-annual).
    - **ytm_continuous** (number) - Yield to Maturity (continuous).
    - **ytm_money_market** (number) - Yield to Maturity (money market).
    - **ytm_semi_annual** (number) - Yield to Maturity (semi-annual).
- **total** (integer) - Total number of results.

#### Response Example
```json
{
  "data": [
    {
      "isin": "US005824LP01",
      "trade_data": [
        {
          "price": 101.78,
          "settlement_date": "2025-01-01",
          "ytc_continuous": 4.6472,
          "ytc_money_market": null,
          "ytc_semi_annual": 4.7017,
          "ytm_continuous": 4.71611,
          "ytm_money_market": null,
          "ytm_semi_annual": 4.7722
        }
      ]
    }
  ],
  "total": 1
}
```
```

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

### POST /api/v1/bond_pricing_latest OpenAPI Specification

Source: https://docs.terrapinfinance.com/api-endpoints/government-and-corporate-latest-pricing-data

This OpenAPI specification defines the structure and behavior of the POST /api/v1/bond_pricing_latest endpoint. It details the request parameters, including the optional as_of_date and the required list of ISINs, as well as the structure of the response data.

```yaml
openapi: 3.0.0
info:
  title: Terrapin API
  version: 1.0.0
servers:
  - url: https://terrapinfinance.com
    variables: {}
security:
  - authorization: []
tags: []
paths:
  /api/v1/bond_pricing_latest:
    post:
      tags: []
      summary: Government and corporate latest end of day pricing data
      description: >-
        Get latest end of day government and corporate bond pricing data for a
        given set of ISINs.
      operationId: post_bond_pricing_latest
      parameters: []
      requestBody:
        content:
          application/json:
            example:
              as_of_date: '2024-07-17'
              isins:
                - XS1610682764
            schema:
              additionalProperties: false
              properties:
                as_of_date:
                  description: >-
                    Set this date (in ISO-8601 format (YYYY-MM-DD)) to get the
                    latest pricing data as of a specific date.


                    When not set, the latest pricing data is returned.
                  format: date
                  type: string
                  x-struct: null
                  x-validate: null
                isins:
                  description: >-
                    International Securities Identification Number (ISIN), 
                    unique 12-character code for the security.
                  items:
                    example: CH0282526133
                    maxLength: 12
                    minLength: 12
                    nullable: false
                    type: string
                    x-struct: null
                    x-validate: null
                  type: array
                  x-check: valid_check_digit
                  x-check-error: Invalid ISIN check digit
                  x-struct: null
                  x-transform: upcase
                  x-validate: null
              required:
                - isins
              type: object
              x-struct: null
              x-validate: null
        required: true
      responses:
        '200':
          content:
            application/json:
              example:
                data:
                  - convexity: 0.15703
                    date: '2024-07-17'
                    duration: 1.38783
                    estimated_volume: 20000
                    id: nbAgC0e11AOfgCoiondwUQ
                    isin: XS1610682764
                    modified_duration: 1.33952
                    price: 99.21
                    yield_to_maturity: 3.60638
                total: 1
              schema:
                additionalProperties: false
                properties:
                  data:
                    description: List of response data objects, often capped to 1000.
                    items:
                      additionalProperties: false
                      properties:
                        convexity:
                          description: >-
                            Macaulay convexity, as calculated on `date` at
                            `price`.
                          nullable: true
                          type: number
                          x-struct: null
                          x-validate: null
                        date:
                          description: Trade date in ISO-8601 format (YYYY-MM-DD).
                          format: date
                          nullable: false
                          type: string
                          x-struct: null
                          x-validate: null
                        duration:
                          description: >-
                            Macaulay duration, as calculated on `date` at
                            `price`.
                          nullable: true
                          type: number
                          x-struct: null
                          x-validate: null
                        estimated_volume:
                          description: >-
                            Estimated notional traded volume of the bond at
                            `date`. This value will necessarily be an
                            underestimation of the actual traded volume due to
                            the lack of complete reported trades.
                          nullable: true
                          type: number
                          x-struct: null
                          x-validate: null
                        id:
                          description: Unique trade identifier.
                          nullable: false
                          type: string
                          x-struct: null
                          x-validate: null
                        isin:
                          description: >-
                            International Securities Identification Number
                            (ISIN), unique 12-character code for the security.

```