> ## Documentation Index > Fetch the complete documentation index at: https://docs.cryptoprocessing.com/llms.txt > Use this file to discover all available pages before exploring further. # Get exchange rates > Get available currency pairs and exchange rates. This endpoint returns reference exchange rates only. To get an actual exchange quote, use [/exchange/calculate](/api-reference/endpoints/exchange-calculate). The list of supported currencies in the sandbox environment is different from the list in the production environment. ## OpenAPI ````yaml POST /currencies/rates openapi: 3.0.0 info: title: Merchant Backend V2 version: '1.0' description: Documentation for merchant backend processing endpoints servers: - url: https://app.cryptoprocessing.com/api/v2 security: - xProcessingKey: [] tags: - name: Status - name: Balance - name: Currencies - name: Deposit addresses - name: Withdrawal - name: Exchange - name: Invoices - name: Transactions paths: /currencies/rates: post: tags: - Currencies summary: Get currency exchange rates description: Get available currency pairs and exchange rates. operationId: post-currencies-rates parameters: - $ref: '#/components/parameters/XProcessingSignatureHeader' requestBody: content: application/json: schema: type: object properties: currency_from: type: string description: >- Currency to exchange from. For a list of all available currencies, see [API currency codes](/api-reference/currency-codes). currency_to: type: string description: >- Currency to exchange to. For a list of all available currencies, see [API currency codes](/api-reference/currency-codes). examples: BTC to EUR: value: currency_from: BTC currency_to: EUR EUR to BTC: value: currency_from: EUR currency_to: BTC BTC to ETH: value: currency_from: BTC currency_to: ETH Convert from BTC: value: currency_from: BTC Convert to ETH: value: currency_to: ETH All exchange pairs: value: {} responses: '200': description: | OK. Returns the available exchange pairs. content: application/json: schema: type: object properties: data: type: array description: List of matching currency pairs. items: type: object properties: currency_from: type: object properties: currency: type: string description: Source currency code. example: BTC type: type: string description: Source currency type. enum: - crypto - fiat example: crypto min_amount: type: string description: Minimum exchange amount for the source currency. example: '0.00010000' min_amount_deposit_with_exchange: type: string description: >- Minimum deposit amount when using exchange flow. Present when `currency_from.type` is `crypto`. example: '0.00020000' currency_to: type: object properties: currency: type: string description: Target currency code. example: ETH type: type: string description: Target currency type. enum: - crypto - fiat example: crypto rate_from: type: string description: >- Always `1`, representing one unit of `currency_from`. rate_to: type: string description: >- Amount of `currency_to` equivalent to one unit of `currency_from`. examples: BTC to EUR: value: data: - currency_from: currency: BTC type: crypto min_amount: '0.00010000' min_amount_deposit_with_exchange: '0.00020000' currency_to: currency: EUR type: fiat rate_from: '1' rate_to: '58077.41037702' EUR to BTC: value: data: - currency_from: currency: EUR type: fiat min_amount: '1.00000000' currency_to: currency: BTC type: crypto rate_from: '1' rate_to: '0.00001721' BTC to ETH: value: data: - currency_from: currency: BTC type: crypto min_amount: '0.00010000' min_amount_deposit_with_exchange: '0.00020000' currency_to: currency: ETH type: crypto rate_from: '1' rate_to: '32.55326770' '400': description: Bad Request. content: application/json: schema: $ref: '#/components/schemas/ValidationOrMalformedJson' examples: Invalid currency_from: value: errors: currency_from: The selected currency from is invalid. Invalid currency_to: value: errors: currency_to: The selected currency to is invalid. Invalid currency_from and currency_to: value: errors: currency_from: The selected currency from is invalid. currency_to: The selected currency to is invalid. Malformed JSON: summary: Invalid JSON body value: error: Bad content format code: bad_content_format '403': $ref: '#/components/responses/HeaderAuthorization' components: parameters: XProcessingSignatureHeader: name: X-Processing-Signature in: header required: true description: >- Hex-encoded HMAC-SHA512 signature of the request body, [generated using your secret key](/api-reference/authentication). schema: type: string schemas: ValidationOrMalformedJson: oneOf: - type: object title: ValidationError description: One or more request parameters failed validation. properties: errors: type: object additionalProperties: type: string - type: object title: MalformedJson description: >- The request body is not valid JSON or the Content-Type header is not set to `application/json`. properties: error: type: string code: type: string responses: HeaderAuthorization: description: | Forbidden content: application/json: schema: type: object properties: error: type: string description: Human-readable error message. code: type: string description: Error code. description: >- Invalid or missing headers. Refer to [Errors](/api-reference/errors#403) for troubleshooting steps. examples: Bad signature header: value: error: Bad signature header code: bad_header_signature No signature header: value: error: No signature header code: required_header_signature Bad key header: value: error: Bad key header code: bad_header_key No key header: value: error: No key header code: required_header_key securitySchemes: xProcessingKey: type: apiKey description: Your [API key](/integration-guide/get-your-api-key). in: header name: X-Processing-Key ````