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Title: docs: document Windows stdio subprocess stdin handling by AndreKalberer · Pull Request #3079 · modelcontextprotocol/python-sdk · GitHub

Open Graph Title: docs: document Windows stdio subprocess stdin handling by AndreKalberer · Pull Request #3079 · modelcontextprotocol/python-sdk

X Title: docs: document Windows stdio subprocess stdin handling by AndreKalberer · Pull Request #3079 · modelcontextprotocol/python-sdk

Description: Summary document the Windows stdio subprocess hang when a child inherits the server stdin pipe show stdin=subprocess.DEVNULL for asyncio.create_subprocess_exec add a troubleshooting entry and link to it from the stdio run docs Addresses #671. Validation Reproduced the issue on Windows current main: a v2 MCPServer stdio tool that starts sys.executable -c "print('Successfully Call!')" without redirecting stdin timed out/faulted after about 7.8s. Confirmed the same repro succeeds in about 3.4s with stdin=subprocess.DEVNULL. py -3.13 -m uv run --frozen mkdocs build --strict AI disclosure AI assistance was used while preparing this PR. I reviewed the final change, ran the validation listed above, and take responsibility for it.

Open Graph Description: Summary document the Windows stdio subprocess hang when a child inherits the server stdin pipe show stdin=subprocess.DEVNULL for asyncio.create_subprocess_exec add a troubleshooting entry and link...

X Description: Summary document the Windows stdio subprocess hang when a child inherits the server stdin pipe show stdin=subprocess.DEVNULL for asyncio.create_subprocess_exec add a troubleshooting entry and link...

Opengraph URL: https://github.com/modelcontextprotocol/python-sdk/pull/3079

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