> ## Documentation Index > Fetch the complete documentation index at: https://guides.saber.money/llms.txt > Use this file to discover all available pages before exploring further. # Create External Sell > Create an external crypto sell transaction that settles to fiat. **Response field values** | Field | Possible Values | | --- | --- | | `status` | `CREATED`, `PAYMENT_INITIATED`, `FUNDS_RECEIVED`, `COMPLETED`, `FAILED`, `REFUND_INITIATED`, `REFUND_COMPLETED`, `REFUND_FAILED`. Typically `CREATED` immediately after creation. Check status via [Get External Sell Transaction Details](/api-reference/offramp/from-external-wallet/get-external-sell-transaction-details) using `transaction_type=EXTERNAL_SELL`. | | `failure_code`, `failure_desc` | Empty string until the transaction fails | | `refund_wallet_address` | Defaults to `sender_wallet_address` when not provided | | `refund_network` | Defaults to `network` when not provided | ## OpenAPI ````yaml openapi-v2.json POST /api/v2/wallet/transaction/crypto/sell openapi: 3.1.0 info: title: Saber Money API (v2) version: v2 description: >- ## Authentication There is no standalone API-key auth — every request must be **signed**. An API key by itself authenticates nothing. Each call requires four headers together: `X-Api-Key` (your key), `X-Signature` (HMAC-SHA256 of `apiKey + timestamp` — or `apiKey + timestamp + userId` when `X-User-Id` is required — keyed with your API secret), `X-Timestamp` (unix seconds), and `X-Request-Id` (any unique string per request). The signature must be computed by a client script; there is no way to derive it by hand. Use the HMAC Generator flow to compute valid values for manual testing. ## Common Authentication Errors - **Invalid Client ID**: {"error_code":6092,"message":"X-Client-Id invalid","success":false} - **Invalid Secret**: {"error_code":6090,"message":"invalid secret","success":false} - **Timestamp (Older than 10 secs)**: {"errors":{"error_code":6093,"text":"timestamp expired"},"success":false} servers: - url: https://api.saber.money security: [] paths: /api/v2/wallet/transaction/crypto/sell: post: tags: - Offramp summary: Create External Sell description: > Create an external crypto sell transaction that settles to fiat. **Response field values** | Field | Possible Values | | --- | --- | | `status` | `CREATED`, `PAYMENT_INITIATED`, `FUNDS_RECEIVED`, `COMPLETED`, `FAILED`, `REFUND_INITIATED`, `REFUND_COMPLETED`, `REFUND_FAILED`. Typically `CREATED` immediately after creation. Check status via [Get External Sell Transaction Details](/api-reference/offramp/from-external-wallet/get-external-sell-transaction-details) using `transaction_type=EXTERNAL_SELL`. | | `failure_code`, `failure_desc` | Empty string until the transaction fails | | `refund_wallet_address` | Defaults to `sender_wallet_address` when not provided | | `refund_network` | Defaults to `network` when not provided | operationId: create-external-sell-transaction-v2 parameters: - name: X-Api-Key in: header required: true description: Your API key (configured in credentials) schema: type: string - name: X-Signature in: header required: true description: >- HMAC-SHA256 signature (auto-generated) To test manually: HMAC-SHA256 of `apiKey + timestamp` (or `apiKey + timestamp + userId` when X-User-Id is required), keyed with your API secret. The HMAC Generator flow computes this for you. schema: type: string - name: X-Timestamp in: header required: true description: >- Unix timestamp in seconds (auto-generated) Unix seconds, e.g. `Math.floor(Date.now() / 1000)`. Must match the timestamp used in the X-Signature computation. schema: type: string - name: X-Request-Id in: header required: true description: >- Unique request identifier (auto-generated) Any unique string per request, e.g. a UUID. schema: type: string - name: X-User-Id in: header required: true description: User UUID (set above) schema: type: string requestBody: required: true content: application/json: schema: type: object properties: payment_method: type: string description: Payout or payment method. network: type: string description: Sender network. destination_instrument_id: type: string description: Fiat destination instrument. quote_id: type: string description: Quote UUID. sender_wallet_address: type: string description: Sender or funding wallet address. refund_wallet_address: type: string description: >- Refund wallet address. Crypto is returned here (minus network fee) if the transaction fails. refund_network: type: string description: Refund network. Defaults to the sender network when omitted. remarks: type: string description: Optional note. is_first_party: type: boolean description: Whether the transaction is a first-party transfer. tag: type: string description: >- Memo/tag for the sender deposit on tag-based networks (e.g. XRP, XLM, TON). refund_tag: type: string description: >- Memo/tag for the refund address on tag-based networks. Counterpart of `refund_network`. reason_code: type: string description: >- Optional semantic reason code. When provided it must be an allowed value; an invalid value is rejected with error 403006. required: - payment_method - network - destination_instrument_id - quote_id - sender_wallet_address - refund_wallet_address example: payment_method: bank_transfer destination_instrument_id: 3e8be4b2-5f8a-47be-a645-4175b0f57089 quote_id: 7cd89b3c-7c76-48ad-9f2a-b0a7f871c4a7 sender_wallet_address: 1FfmbHfnpaZjKFvyi1okTjJJusN455paPH refund_wallet_address: 1FfmbHfnpaZjKFvyi1okTjJJusN455paPH network: BSC refund_network: BSC remarks: customer payout responses: '200': description: Successful response content: application/json: schema: type: object properties: success: type: boolean data: type: object properties: id: type: string status: type: string enum: - CREATED - PAYMENT_INITIATED - FUNDS_RECEIVED - COMPLETED - FAILED - REFUND_INITIATED - REFUND_COMPLETED - REFUND_FAILED - transaction_type=EXTERNAL_SELL fiat_symbol: type: string crypto_symbol: type: string fiat_amount: type: number crypto_amount: type: number payment_method: type: string deposit_crypto_address: type: string deposit_network: type: string destination_instrument_id: type: string refund_wallet_address: type: string enum: - sender_wallet_address refund_network: type: string enum: - network refund_tag: type: string sender_wallet_address: type: string created_at: type: integer updated_at: type: integer example: success: true data: id: 01992e48-db7d-7c55-bb87-6f4e1abf5fe3 status: CREATED fiat_symbol: INR crypto_symbol: USDT fiat_amount: 55.38 crypto_amount: 0.695712 payment_method: bank_transfer deposit_crypto_address: '0xabcdef1234567890abcdef1234567890abcdef12' deposit_network: BSC destination_instrument_id: a4680ba9-5ac6-4629-9493-2a88b160cd33 refund_wallet_address: '0x318d2aae4c99c2e74f7b5949fa1c34df837789b8' refund_network: '' refund_tag: '' sender_wallet_address: '0x318d2aae4c99c2e74f7b5949fa1c34df837789b8' created_at: 1757418150839 updated_at: 1757418150841 '400': description: >- `400001`: missing or invalid parameters; `403001`: invalid request; `402005`: quote invalid content: application/json: schema: type: object properties: success: type: boolean enum: - false errors: type: array items: type: object properties: code: type: - integer - string text: type: string example: success: false errors: - code: 400001 text: missing or invalid parameters '403': description: >- `403003`: invalid sender or refund address; `404001`: limits validation failed for the transaction content: application/json: schema: type: object properties: success: type: boolean enum: - false errors: type: array items: type: object properties: code: type: - integer - string text: type: string example: success: false errors: - code: 400001 text: missing or invalid parameters '409': description: '`403004`: reference uuid already exists or is invalid' content: application/json: schema: type: object properties: success: type: boolean enum: - false errors: type: array items: type: object properties: code: type: - integer - string text: type: string example: success: false errors: - code: 400001 text: missing or invalid parameters '500': description: '`499999`: Something went wrong!' content: application/json: schema: type: object properties: success: type: boolean enum: - false errors: type: array items: type: object properties: code: type: - integer - string text: type: string example: success: false errors: - code: 400001 text: missing or invalid parameters ```` ## Related topics - [Get External Sell Transaction Details](/api-reference/offramp/from-external-wallet/get-external-sell-transaction-details.md) - [Get Sell Transaction Details](/api-reference/offramp/from-user-wallet/get-sell-transaction-details.md) - [Get Pool Sell Transaction Details](/api-reference/offramp/from-pool-wallet/get-pool-sell-transaction-details.md) - [Get Crypto Deposit Transaction Details](/api-reference/wallet-operations/crypto-deposit/get-crypto-deposit-transaction-details.md) - [Get Pool Buy Transaction Details](/api-reference/onramp/to-pool-wallet/get-pool-buy-transaction-details.md)