Verbatim protocol examples showing the actual wire messages, file formats, and data structures for key protocols in the catalog. Each example links to the authoritative spec and includes annotated request/response pairs.
| Example | Protocol | Layer |
|---|---|---|
| MCP Tool Definition | Model Context Protocol | Tool and context |
| A2A Agent Card | Agent2Agent | Agent to agent |
| agents.json | agents.json | Tool and context |
| LangChain Agent Protocol | LangChain Agent Protocol | Agent serving and runtime |
| x402 Payment | x402 | Payments and commerce |
| AP2 Mandate | Agent Payments Protocol | Payments and commerce |
| Agent Plugins | Agent Plugins | Formats and conventions |