> ## Documentation Index > Fetch the complete documentation index at: https://docs.flipeet.io/llms.txt > Use this file to discover all available pages before exploring further. # Create a crypto deposit > Returns a wallet address for one payment, on the network and token you ask for. When the transfer confirms, the amount (less fees) is added to your balance and you get `transaction.crypto.completed`. Show your customer the address, the network and the token. Funds sent in another token, or on another network, may not be recoverable. ## OpenAPI ````yaml /api-reference/openapi.json post /api/v1/merchant/transactions/crypto/initialize openapi: 3.0.0 info: title: Flipeet Pay API version: '1.0' description: >- Accept and send stablecoin and local-currency payments. Authenticate with your secret key in the x-api-key header. Keys starting fpay_test_ use the sandbox; fpay_live_ moves real money. Guides: https://docs.flipeet.io contact: name: Flipeet Pay url: https://docs.flipeet.io servers: - url: https://api.pay.flipeet.io security: - x-api-key: [] tags: - name: Checkout description: >- Hosted payment pages: create a payment, send your customer to checkoutUrl, and get a webhook when they pay. - name: Deposits description: >- Collect stablecoins or local currency straight into your balance, with your own UI. - name: Balance description: What you hold, per asset. - name: Withdrawals description: Send funds from your balance to a wallet or a bank account. - name: Ramps description: >- Convert between local currency and stablecoins for your own customers, settled to their wallet or bank. - name: Webhooks description: Delivery history, resends and test events. - name: Sandbox description: 'Test-mode tools: simulate outcomes and add test funds. Sandbox keys only.' paths: /api/v1/merchant/transactions/crypto/initialize: post: tags: - Deposits summary: Create a crypto deposit description: >- Returns a wallet address for one payment, on the network and token you ask for. When the transfer confirms, the amount (less fees) is added to your balance and you get `transaction.crypto.completed`. Show your customer the address, the network and the token. Funds sent in another token, or on another network, may not be recoverable. operationId: MerchantPaymentController_initializeCryptoTransaction parameters: [] requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/InitializeCryptoTransactionDto' example: network: base asset: usdc amount: 100 reference: inv_2201 metadata: customerId: cus_77 responses: '201': description: Crypto transaction initialized. content: application/json: schema: type: object properties: message: type: string example: Crypto transaction initialized status: type: string example: success statusCode: type: number example: 201 data: type: object properties: reference: type: string example: inv_2201 type: type: string example: crypto network: type: string example: base asset: type: string example: usdc address: type: string example: '0x3c5b0e8d1f6a4b2c9e7d0a1b2c3d4e5f60718293' expectedAmount: type: number example: 100 status: type: string example: pending livemode: type: boolean example: true example: message: Crypto transaction initialized status: success statusCode: 201 data: reference: inv_2201 type: crypto network: base asset: usdc address: '0x3c5b0e8d1f6a4b2c9e7d0a1b2c3d4e5f60718293' expectedAmount: 100 status: pending livemode: true '400': $ref: '#/components/responses/Error400' '401': $ref: '#/components/responses/Error401' '409': $ref: '#/components/responses/Error409' '429': $ref: '#/components/responses/Error429' '500': $ref: '#/components/responses/Error500' security: - x-api-key: [] components: schemas: InitializeCryptoTransactionDto: type: object properties: network: type: string example: base description: The network the customer pays on. asset: type: string example: usdc description: The token the customer pays with. enum: - usdc - usdt amount: type: number example: 100 description: >- The amount you expect, in `asset`. What we credit is what actually arrives, less fees. reference: type: string example: inv_2201 description: >- Your unique ID for this payment. Sending the same one again returns `409`, so retries are safe. Generated if you leave it out. callbackUrl: type: string example: https://shop.example.com/hooks/flipeet description: Send this payment's webhooks here instead of your usual webhook URL. metadata: type: object example: customerId: cus_77 description: Your own data, returned as-is in the webhook. required: - network - asset responses: Error400: description: The request is invalid. `details.errors` lists every problem. content: application/json: schema: type: object properties: message: type: string description: What went wrong, for people. May be reworded. status: type: string example: error statusCode: type: integer description: The HTTP status. code: type: string description: A stable code to branch on. enum: - invalid_request - authentication_failed - permission_denied - not_found - conflict - rate_limited - internal_error - provider_error details: type: object nullable: true description: For validation errors, `errors` lists every problem. requestId: type: string description: Quote it when you contact us. timestamp: type: string format: date-time example: message: Amount must be a positive number status: error statusCode: 400 code: invalid_request details: errors: - Amount must be a positive number requestId: req_5f0c2a9b8d7e4c1f9a3b6d2e1c0f7a8b timestamp: '2026-11-04T10:00:00.000Z' Error401: description: The API key is missing, mistyped or revoked. content: application/json: schema: type: object properties: message: type: string description: What went wrong, for people. May be reworded. status: type: string example: error statusCode: type: integer description: The HTTP status. code: type: string description: A stable code to branch on. enum: - invalid_request - authentication_failed - permission_denied - not_found - conflict - rate_limited - internal_error - provider_error details: type: object nullable: true description: For validation errors, `errors` lists every problem. requestId: type: string description: Quote it when you contact us. timestamp: type: string format: date-time example: message: Invalid or inactive API key status: error statusCode: 401 code: authentication_failed details: null requestId: req_5f0c2a9b8d7e4c1f9a3b6d2e1c0f7a8b timestamp: '2026-11-04T10:00:00.000Z' Error409: description: >- That reference was used before. Look up the existing one instead of creating another. content: application/json: schema: type: object properties: message: type: string description: What went wrong, for people. May be reworded. status: type: string example: error statusCode: type: integer description: The HTTP status. code: type: string description: A stable code to branch on. enum: - invalid_request - authentication_failed - permission_denied - not_found - conflict - rate_limited - internal_error - provider_error details: type: object nullable: true description: For validation errors, `errors` lists every problem. requestId: type: string description: Quote it when you contact us. timestamp: type: string format: date-time example: message: Reference payout_5510 already exists status: error statusCode: 409 code: conflict details: null requestId: req_5f0c2a9b8d7e4c1f9a3b6d2e1c0f7a8b timestamp: '2026-11-04T10:00:00.000Z' Error429: description: Too many requests. Each key can make 120 a minute. content: application/json: schema: type: object properties: message: type: string description: What went wrong, for people. May be reworded. status: type: string example: error statusCode: type: integer description: The HTTP status. code: type: string description: A stable code to branch on. enum: - invalid_request - authentication_failed - permission_denied - not_found - conflict - rate_limited - internal_error - provider_error details: type: object nullable: true description: For validation errors, `errors` lists every problem. requestId: type: string description: Quote it when you contact us. timestamp: type: string format: date-time example: message: Too many requests. Slow down and try again shortly. status: error statusCode: 429 code: rate_limited details: null requestId: req_5f0c2a9b8d7e4c1f9a3b6d2e1c0f7a8b timestamp: '2026-11-04T10:00:00.000Z' Error500: description: Something went wrong on our side. Retry with backoff. content: application/json: schema: type: object properties: message: type: string description: What went wrong, for people. May be reworded. status: type: string example: error statusCode: type: integer description: The HTTP status. code: type: string description: A stable code to branch on. enum: - invalid_request - authentication_failed - permission_denied - not_found - conflict - rate_limited - internal_error - provider_error details: type: object nullable: true description: For validation errors, `errors` lists every problem. requestId: type: string description: Quote it when you contact us. timestamp: type: string format: date-time example: message: Internal server error status: error statusCode: 500 code: internal_error details: null requestId: req_5f0c2a9b8d7e4c1f9a3b6d2e1c0f7a8b timestamp: '2026-11-04T10:00:00.000Z' securitySchemes: x-api-key: type: apiKey in: header name: x-api-key description: >- Your secret key. `fpay_test_…` keys use the sandbox; `fpay_live_…` keys move real money. ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.