Agentcard Webhooks

asyncapi: 3.0.0
# generated: '2026-07-17'
# method: generated
# source: https://docs.agentcard.sh/companies/webhooks.md (webhook catalog -> AsyncAPI by API Evangelist; no provider AsyncAPI is published)
info:
  title: Agentcard Webhooks
  version: 2.0.0
  description: >-
    Event notifications Agentcard delivers to destinations you register in the dashboard.
    Every delivery is a POST with a signed envelope { id, type, created, livemode, data }.
    Verify the AgentCard-Signature header (HMAC-SHA256 of "{t}.{raw_body}" with your whsec_
    secret) against the raw body and dedupe on id. This document is generated from the
    published event catalog; Agentcard does not publish its own AsyncAPI.
  contact:
    name: Agentcard Support
    email: support@agentcard.sh
    url: https://docs.agentcard.sh/companies/webhooks
defaultContentType: application/json
servers:
  webhook:
    host: your-app.example.com
    protocol: https
    description: Your registered webhook destination (mode-scoped; sandbox receives only livemode=false).
components:
  messageTraits:
    signed:
      headers:
        type: object
        properties:
          AgentCard-Signature:
            type: string
            description: 't=<unix>,v1=<hex-hmac>; HMAC-SHA256 of "{t}.{raw_body}" keyed with the whsec_ secret.'
  schemas:
    Envelope:
      type: object
      required: [id, type, created, livemode, data]
      properties:
        id: {type: string, description: Unique event id (dedupe on this), example: evt_123}
        type: {type: string, description: Event type, example: transaction.authorized}
        created: {type: integer, description: Unix timestamp}
        livemode: {type: boolean, description: false for sandbox deliveries}
        data: {type: object, description: Event-specific payload}
  messages:
    Event:
      name: Event
      title: Agentcard webhook event
      contentType: application/json
      traits: [{$ref: '#/components/messageTraits/signed'}]
      payload: {$ref: '#/components/schemas/Envelope'}
channels:
  events:
    address: /webhooks/agentcard
    description: The single destination endpoint that receives every subscribed event.
    messages:
      event: {$ref: '#/components/messages/Event'}
operations:
  receiveEvent:
    action: receive
    channel: {$ref: '#/channels/events'}
    summary: Receive a signed Agentcard webhook event.
    description: >-
      Event types delivered on this channel — card.created, card.updated, card.closed,
      cardholder.created, cardholder.updated, cardholder_onboarding_session.completed,
      transaction.authorized, transaction.cleared, transaction.declined, transaction.voided,
      identity.verification.updated, balance.low, merchant.connected, card_flow.started,
      card_flow.failed, transfer.approved, transfer.initiated, transfer.completed,
      transfer.failed, transfer.released, wallet.funded, wallet.balance.low.