mcp-spec is used at run time in 13 crates. It is a direct run-time dependency in 5 crates.

Depender (with downloads and own rev deps) mcp-spec version
4.2K 5 mcp-client ^0.1.0
950 2 mcp-macros ^0.1.0
900 1 mcp-server ^0.1.0
300 mcp-proxy ^0.1
100 mcp-ectors ^0.1.0