> ## 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. # Send a test webhook > Sends a signed `webhook.test` event to the webhook URL for your key's mode, so you can check your endpoint and your signature check. ## OpenAPI ````yaml /api-reference/openapi.json post /api/v1/webhook/test 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/webhook/test: post: tags: - Webhooks summary: Send a test webhook description: >- Sends a signed `webhook.test` event to the webhook URL for your key's mode, so you can check your endpoint and your signature check. operationId: WebhookController_sendTestWebhook parameters: [] responses: '201': description: Test webhook sent. content: application/json: schema: type: object properties: message: type: string example: Test webhook sent. status: type: string example: success statusCode: type: number example: 201 data: type: object properties: delivered: type: boolean example: true endpoint: type: string example: https://shop.example.com/hooks/flipeet mode: type: string example: live example: message: Test webhook sent. status: success statusCode: 201 data: delivered: true endpoint: https://shop.example.com/hooks/flipeet mode: live '400': $ref: '#/components/responses/Error400' '401': $ref: '#/components/responses/Error401' '404': $ref: '#/components/responses/Error404' '429': $ref: '#/components/responses/Error429' '500': $ref: '#/components/responses/Error500' security: - x-api-key: [] components: 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' Error404: description: Nothing of yours has that ID or reference. 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: Transaction not found status: error statusCode: 404 code: not_found 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.