openapi: 3.2.0
info:
  title: Whisper A2a API
  summary: Identity and safe egress for AI agents, and the security graph behind it.
  description: Every endpoint described here was exercised live before this document was written.
  version: 1.1.0
  contact:
    name: Whisper Security
    url: https://whisper.online
  license:
    name: Proprietary
    url: https://whisper.online/terms
servers:
- url: https://whisper.online
  description: The main site, verification, and the ledger
tags:
- name: A2a
paths:
  /a2a:
    post:
      summary: A2A JSON-RPC endpoint
      description: JSON-RPC 2.0, A2A 1.0. The method is `SendMessage`. Keyless skills answer with no credential; control skills need `X-API-Key` and are a binding over the same Cypher call above, not a second implementation of it. The Agent Card at /.well-known/agent-card.json lists every skill.
      operationId: a2aSendMessage
      security:
      - {}
      - whisperApiKey: []
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
              - jsonrpc
              - method
              properties:
                jsonrpc:
                  type: string
                  const: '2.0'
                id: {}
                method:
                  type: string
                  example: SendMessage
                params:
                  type: object
            example:
              jsonrpc: '2.0'
              id: 1
              method: SendMessage
              params:
                message:
                  messageId: m1
                  role: ROLE_USER
                  parts:
                  - data:
                      skill: assess
                      input: example.com
      responses:
        '200':
          description: A JSON-RPC result, or a JSON-RPC error object.
          content:
            application/json:
              schema:
                type: object
        '400':
          description: Unparseable, or not a JSON-RPC request.
      tags:
      - A2a
components:
  securitySchemes:
    whisperApiKey:
      type: apiKey
      in: header
      name: X-API-Key
      description: A whisper_live_... key. Obtainable from an email address alone, with no human step; see /.well-known/agent-onboarding.json.
externalDocs:
  description: The full catalog, written for agents
  url: https://whisper.online/llms-full.txt