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OpenAPI Specification

openapi: 3.2.0
info:
  title: Klisten Agent Infrastructure Webhooks API
  version: 0.1.0
  description: Phase 1 API. Optional capabilities fail closed unless their runtime dependencies are configured. See health and capability discovery for this instance.
tags:
- name: Webhooks
paths:
  /v1/webhooks/paypal:
    post:
      operationId: receivePayPalWebhook
      security: []
      description: PayPal notification ingress. Requires provider signature verification using the configured environment and webhook ID. A verified event selects durable reconciliation; it is not funding evidence. Unverified or unresolved events return 503 for redelivery. Maximum body 65536 bytes.
      parameters:
      - name: paypal-transmission-id
        in: header
        required: true
        schema:
          type: string
      - name: paypal-transmission-time
        in: header
        required: true
        schema:
          type: string
      - name: paypal-cert-url
        in: header
        required: true
        schema:
          type: string
      - name: paypal-auth-algo
        in: header
        required: true
        schema:
          type: string
      - name: paypal-transmission-sig
        in: header
        required: true
        schema:
          type: string
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
      responses:
        '204':
          description: Notification handled. No response body.
        '503':
          description: Verification or reconciliation pending.
          content:
            application/json:
              schema:
                type: object
                required:
                - status
                properties:
                  status:
                    const: pending_verification
      tags:
      - Webhooks
      summary: Receive pay pal webhook
      x-summary-source: derived
components:
  securitySchemes:
    ApiKey:
      type: http
      scheme: bearer
      bearerFormat: ck_live_<secret>
    SupabaseHuman:
      type: http
      scheme: bearer
      bearerFormat: JWT
      description: Supabase access token for a verified Google user in the configured project. Agent API keys are not accepted.