> ## Documentation Index
> Fetch the complete documentation index at: https://docs.dollarpe.xyz/llms.txt
> Use this file to discover all available pages before exploring further.

# Fetch Rate

> Returns the current fiat-to-crypto exchange rate for a payin transaction.

<Prompt description="Fetch Rate" actions={["cursor"]}>
  Integrate the DollarPe Fetch Payin Rate endpoint into my application.

  Endpoint: GET /payin/fetch-rate
  Base URL: [https://api.dollarpe.in](https://api.dollarpe.in) (production) | [https://sandbox.dollarpe.in](https://sandbox.dollarpe.in) (sandbox)

  Auth headers required on every request:

  * X-API-KEY: your API key
  * X-TIMESTAMP: current Unix time in seconds
  * X-SIGNATURE: Base64(HMAC-SHA256(X-API-KEY + X-TIMESTAMP + sortedJSONBody, apiSecret))

  Task: Write a typed function that:

  1. Accepts rate query parameters (fiat\_currency, crypto\_asset, amount)
  2. Builds the auth headers
  3. Calls GET /payin/fetch-rate
  4. Returns the exchange rate and fee breakdown
  5. Handles 400 (unsupported pair, amount out of range) and 500 errors

  Language: TypeScript
</Prompt>

| API Status Code | Response               | Reason                |
| --------------- | ---------------------- | --------------------- |
| 500             | Internal Server Error. | Internal Server Error |


## OpenAPI

````yaml GET /payin/fetch-rate
openapi: 3.1.0
info:
  title: DollarPe API
  description: API for DollarPe - Customer, Payout, and Webhook services
  license:
    name: MIT
  version: 1.0.0
servers:
  - url: https://sandbox.dollarpe.xyz/pos/api/v1
    description: Payout API Base URL
    variables:
      base_url:
        default: https://sandbox.dollarpe.xyz
  - url: https://sandbox.dollarpe.xyz/cms/api/v1
    description: Customer API Base URL
    variables:
      base_url:
        default: https://sandbox.dollarpe.xyz
security:
  - ApiKeyAuth: []
    TimestampAuth: []
    SignatureAuth: []
tags:
  - name: Customer
    description: Customer related operations
    x-displayName: Customer
    x-traitTag: true
  - name: Payout
    description: Payout related operations
  - name: Webhooks
    description: Webhook related operations
  - name: Widget
    description: Hosted buy/sell widget session initialization
paths:
  /payin/fetch-rate:
    get:
      tags:
        - Payin
      description: Fetch exchange rate for a given asset
      parameters:
        - name: asset
          in: path
          required: true
          description: The crypto asset for which quotation is requested
          schema:
            type: string
            example: USDT
        - name: fiat
          in: path
          required: true
          description: The fiat currency in which the quotation is requested
          schema:
            type: string
            example: INR
      responses:
        '200':
          description: Successful response
          content:
            application/json:
              schema:
                type: object
                properties:
                  status:
                    type: boolean
                    example: true
                  message:
                    type: string
                    example: Success
                  data:
                    type: object
                    properties:
                      asset:
                        type: string
                        example: USDT
                      fiat:
                        type: string
                        example: INR
                      rate:
                        type: number
                        format: decimal
                        example: 87.2
        '400':
          description: Bad Request
          content:
            application/json:
              schema:
                type: object
                properties:
                  status:
                    type: boolean
                    example: false
                  message:
                    type: string
                    example: Bad Request
                  data:
                    type: 'null'
                  err_code:
                    type: string
                    example: REQ_FIELD_MISSING
                  errors:
                    type: object
                    additionalProperties:
                      type: array
                      items:
                        type: string
                    example:
                      asset:
                        - This field is required.
                      amount:
                        - This field is required.
        '500':
          description: Internal Server Error
          content:
            application/json:
              schema:
                type: object
                properties:
                  status:
                    type: boolean
                    example: false
                  message:
                    type: string
                    example: Internal Server Error
                  data:
                    type: 'null'
                  err_code:
                    type: string
                    example: SYS_INTERNAL_ERROR
                  errors:
                    type: string
                    example: Unexpected error occurred. Please try again later.
      servers:
        - url: https://sandbox.dollarpe.xyz/pis/api/v1
          description: Payin API Base URL
components:
  securitySchemes:
    ApiKeyAuth:
      type: apiKey
      in: header
      name: X-API-KEY
      description: API Key for authentication
    TimestampAuth:
      type: apiKey
      in: header
      name: X-TIMESTAMP
      description: Current timestamp in seconds since epoch
    SignatureAuth:
      type: apiKey
      in: header
      name: X-SIGNATURE
      description: HMAC SHA256 signature of the request encoded in Base64

````