modelcontextprotocol/ext-server-card
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Use AI Catalog for Server Card discovery (#42)

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Sam Morrow 2026-07-20 18:54:05 +02:00 • committed by GitHub
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@ -16,6 +16,8 @@ A **Server Card** is a JSON document — hosted at any unreserved URI, with `GET
- Its remote transport endpoints (URLs, headers, variable templates, supported protocol versions)
- Optional registry-style extension metadata (`_meta`)
Clients can automatically discover Server Cards through [AI Catalog](https://github.com/Agent-Card/ai-catalog) entries advertised on domains present in agentic sessions.
Server Cards intentionally omit primitive listings (tools, resources, prompts) — those remain subject to runtime listing via the protocol's standard list operations. They also intentionally omit local installation metadata — see [Relationship to the MCP Registry](#relationship-to-the-mcp-registry).
## Relationship to the MCP Registry