Merchant-0 Message API
The Message API from Merchant-0 — 1 operation(s) for message.
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curl "https://apis.io/api/v1/apis/merchant-0-com:merchant-0-com-message-api"
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OpenAPI Specification
openapi: 3.2.0
info:
title: Merchant 0 Com Message API
version: '2026.1'
description: 'Operations tagged Message across 2 of this provider''s published API definitions: merchant-0-com-openapi-original.json, merchant-0-com-openapi.json. Each path carries the servers of the definition it was published in.'
servers:
- url: https://api.merchant-0.com
description: Production. The spec is served from this host at /openapi.json and the A2A agent card names it as agent_api; the harvested document declares no servers[] (added by API Evangelist, recorded in overlays/merchant-0-com-openapi-overlay.yaml).
tags:
- name: Message
paths:
/message/send:
post:
summary: A2A Message Send
description: 'Minimal JSON-RPC 2.0 handler for A2A ``message/send`` (registry health / discovery).
**No database, no outbound HTTP** -- only reads the request body, parses JSON when
present, and returns a fixed payload. Accepts full JSON-RPC 2.0 or simpler JSON
bodies; always HTTP **200**. Non-JSON-RPC payloads get ``id: null``.'
operationId: a2a_message_send_message_send_post
responses:
'200':
description: Successful Response
content:
application/json:
schema: {}
tags:
- Message
x-refined-from:
- merchant-0-com-openapi-original.json
- merchant-0-com-openapi.json