Merchant-0

Merchant-0 A2A Agent

Agent2Agent (A2A) surface: an agent card served from https://merchant-0.com/.well-known/agent-card.json (with a pre-0.3 agent.json at the legacy path) naming did:web:merchant-0.com, four skills (SEA intelligence query, SEA market report, agent DID verification, subscription-status proof) and https://api.merchant-0.com as the agent URL. The card is graded flavored against A2A 1.0.0: it carries no protocolVersion (a protocolVersions array instead), its capabilities object is a keyed map of priced SKUs rather than the A2A capabilities shape, and the JSON-RPC responder lives at POST /message/send (the card's own url answers 405) and returns one fixed acknowledgement payload for every method. Real purchases run over the REST AP2 endpoints, which the card lists under a non-standard endpoints block.

GitHub

Other Resources

🔗
AgentCard
https://raw.githubusercontent.com/api-evangelist/merchant-0-com/refs/heads/main/a2a/merchant-0-com-a2a.yml
🔗
AgentCard
https://merchant-0.com/.well-known/agent-card.json

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API entry from apis.yml

apis.yml Raw ↑ 
aid: merchant-0-com:merchant-0-a2a-agent
name: Merchant-0 A2A Agent
description: 'Agent2Agent (A2A) surface: an agent card served from https://merchant-0.com/.well-known/agent-card.json
  (with a pre-0.3 agent.json at the legacy path) naming did:web:merchant-0.com, four skills (SEA intelligence
  query, SEA market report, agent DID verification, subscription-status proof) and https://api.merchant-0.com
  as the agent URL. The card is graded flavored against A2A 1.0.0: it carries no protocolVersion (a protocolVersions
  array instead), its capabilities object is a keyed map of priced SKUs rather than the A2A capabilities
  shape, and the JSON-RPC responder lives at POST /message/send (the card''s own url answers 405) and
  returns one fixed acknowledgement payload for every method. Real purchases run over the REST AP2 endpoints,
  which the card lists under a non-standard endpoints block.'
humanURL: https://merchant-0.com/
baseURL: https://api.merchant-0.com
tags:
- A2A
- Agent-Native
- Decentralized Identity
tags_raw:
- A2A
- agent-native
- Decentralized Identity
properties:
- type: AgentCard
  url: a2a/merchant-0-com-a2a.yml
- type: AgentCard
  name: A2A Agent Card (provider-hosted)
  url: https://merchant-0.com/.well-known/agent-card.json