> ## Documentation Index
> Fetch the complete documentation index at: https://yn-c9bb3266.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Webhook Notifications

> Registers a webhook endpoint to receive BaaS event notifications.



## OpenAPI

````yaml POST /v1/baas/webhooks
openapi: 3.1.0
info:
  title: Yuno Payments API
  description: >-
    Yuno payment orchestration platform — unified REST API for payments,
    checkout sessions, customers, payment methods, subscriptions, payouts,
    marketplace transfers, and banking connectivity across Latin America.
  version: 1.0.0
  contact:
    name: Yuno Support
    email: support@y.uno
    url: https://docs.y.uno
  license:
    name: Proprietary
    url: https://y.uno
servers:
  - url: https://api-sandbox.y.uno
    description: Sandbox
  - url: https://api.y.uno
    description: Production
security:
  - publicApiKey: []
    privateSecretKey: []
paths:
  /v1/baas/webhooks:
    post:
      tags:
        - BaaS
      summary: Create BaaS webhook
      description: Registers a webhook endpoint to receive BaaS event notifications.
      operationId: createBaasWebhook
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
                - url
                - events
              properties:
                url:
                  type: string
                  format: uri
                  description: Webhook endpoint URL
                events:
                  type: array
                  items:
                    type: string
                  description: Event types to subscribe to
                secret:
                  type: string
                  description: Shared secret for signature verification
            example:
              url: https://example.com/webhooks/baas
              events:
                - account.updated
                - transfer.completed
                - transfer.failed
              secret: whsec_your_secret_key
      responses:
        '201':
          description: Webhook registered
          content:
            application/json:
              schema:
                type: object
                properties:
                  id:
                    type: string
                    format: uuid
                  url:
                    type: string
                  events:
                    type: array
                    items:
                      type: string
                  created_at:
                    type: string
                    format: date-time
        '400':
          description: Invalid request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
components:
  schemas:
    Error:
      type: object
      description: >-
        Standard error envelope returned by every Yuno service for any 4xx or
        5xx response. Top level. `code` is a stable SCREAMING_SNAKE_CASE
        identifier. `messages` is always an array of strings, even when there is
        only one entry. There is no `error` wrapper, no singular `message`, no
        `type`, no `details`. See the Error handling guide for the full code
        catalog.
      required:
        - code
        - messages
      properties:
        code:
          type: string
          description: >-
            Stable, machine readable identifier. Branch on this in your client.
            Common values include `BAD_REQUEST`, `VALIDATION_ERROR`,
            `INVALID_REQUEST`, `UNAUTHORIZED`, `FORBIDDEN`, `NOT_FOUND`,
            `TOO_MANY_REQUESTS`, `INTERNAL_ERROR`, `BAD_GATEWAY`,
            `SERVICE_UNAVAILABLE`, plus business codes like
            `CUSTOMER_ID_DUPLICATED`, `RECIPIENT_NOT_FOUND`, `INVALID_STATE`,
            and the `PROVIDER_*` family for downstream provider errors.
          example: VALIDATION_ERROR
        messages:
          type: array
          description: >-
            Human readable details. Validation errors put one entry per failed
            field, formatted `"fieldName message"`.
          items:
            type: string
          example:
            - merchant_customer_id must not be blank
      example:
        code: VALIDATION_ERROR
        messages:
          - amount must be greater than 0
          - country must not be blank
  securitySchemes:
    publicApiKey:
      type: apiKey
      in: header
      name: public-api-key
      description: Your public API key from the Yuno Dashboard
    privateSecretKey:
      type: apiKey
      in: header
      name: private-secret-key
      description: Your private secret key (server-side only)

````