Agent commerce discovery: A2A, AP2, and ACP
Article summary
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Before an AI agent can transact with a site, it has to discover what the site supports and how to reach it. Three machine-readable surfaces carry that information: an A2A Agent Card, an AP2 declaration, and an ACP discovery document. Each answers a different question, and an agent reads them before it sends a single commerce request. The A2A Agent Card An A2A Agent Card is a JSON file, usually at /.well-known/agent-card.json, that describes an agent interface. It states the agent's name,…
1Key Takeaways
- Before an AI agent can transact with a site, it has to discover what the site supports and how to reach it.
- Three machine-readable surfaces carry that information: an A2A Agent Card, an AP2 declaration, and an ACP discovery document.
- Each answers a different question, and an agent reads them before it sends a single commerce request.
- The A2A Agent Card An A2A Agent Card is a JSON file, usually at /.well-known/agent-card.json, that describes an agent interface.
2AIWedia Score
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3Why it matters
Coding AI shifts how fast software ships and how much human review each change needs. DEV — AI reports that before an AI agent can transact with a site, it has to discover what the site supports and how to reach it.
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