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Merge pull request #19 from modelcontextprotocol/sammorrowdrums/fix-discovery-md-primitives

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docs: remove primitives from Server Card contents (fixes #10)
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Sam Morrow 2026-06-08 13:03:28 +02:00 • committed by GitHub
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@ -133,14 +133,16 @@ and ignore entries with unrecognized media types.
## MCP Server Cards ## MCP Server Cards
An **MCP Server Card** is a JSON document that describes a single MCP server — its An **MCP Server Card** is a JSON document that describes a single MCP server — its
identity, capabilities, and connection details. Server Cards use the media type identity and connection details. Server Cards use the media type
`application/mcp-server-card+json`. `application/mcp-server-card+json`.
Server Cards do not enumerate primitives (tools, resources, prompts); those remain
subject to runtime listing via the protocol's standard list operations.
A Server Card includes: A Server Card includes:
- **`name`** — A unique identifier for the server in reverse DNS format (e.g., `com.example/weather`) - **`name`** — A unique identifier for the server in reverse DNS format (e.g., `com.example/weather`)
- **Connection details** — Transport type and endpoint URL - **Connection details** — Transport type and endpoint URL
- **Capabilities** — Tools, resources, and prompts the server offers
- **Metadata** — Human-readable name, description, and version - **Metadata** — Human-readable name, description, and version
For the full Server Card specification, see For the full Server Card specification, see