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v0.3.0 — Standard MCP over stdio, no SDK

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@blackopsrepl blackopsrepl released this 01 Oct 08:17
· 36 commits to main since this release
v0.3.0
ee786ef

Breaking: the server no longer needs an SDK, and requirements-mcp.txt is gone.

  • mcp_server.py implements the MCP stdio transport directly as JSON-RPC 2.0 over newline-delimited stdin/stdout: initialize with protocol-version negotiation (2024-11-05 … 2025-11-25), tools/list, tools/call, ping. Standard library only.
  • Tools advertise JSON Schema input schemas and the standard readOnlyHint / destructiveHint / idempotentHint / openWorldHint annotations.
  • Unknown tools answer protocol error -32602; invalid arguments and stale reports answer tool results with isError: true.
  • Previously the server imported mcp.server.fastmcp and published schemas by overwriting SDK-private internals, which pinned it to one SDK generation and made it unstartable on clients that dropped FastMCP.

v0.2.2...v0.3.0

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