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Title: fix: exit cleanly on stdio KeyboardInterrupt by he-yufeng · Pull Request #2671 · modelcontextprotocol/python-sdk · GitHub

Open Graph Title: fix: exit cleanly on stdio KeyboardInterrupt by he-yufeng · Pull Request #2671 · modelcontextprotocol/python-sdk

X Title: fix: exit cleanly on stdio KeyboardInterrupt by he-yufeng · Pull Request #2671 · modelcontextprotocol/python-sdk

Description: Fixes #2663. Handles Ctrl-C for FastMCP stdio runs at the stdio transport boundary so shutdown does not print a traceback. HTTP transports keep their existing behavior. Validation: uv run pytest tests\server\mcpserver\test_server.py::TestServer::test_run_stdio_exits_cleanly_on_keyboard_interrupt -q; uv run pytest tests\server\mcpserver\test_server.py -q; uv run python -m py_compile src\mcp\server\mcpserver\server.py tests\server\mcpserver\test_server.py; uv run ruff check src\mcp\server\mcpserver\server.py tests\server\mcpserver\test_server.py; uv run ruff format --check src\mcp\server\mcpserver\server.py tests\server\mcpserver\test_server.py; git diff --check.

Open Graph Description: Fixes #2663. Handles Ctrl-C for FastMCP stdio runs at the stdio transport boundary so shutdown does not print a traceback. HTTP transports keep their existing behavior. Validation: uv run pytest te...

X Description: Fixes #2663. Handles Ctrl-C for FastMCP stdio runs at the stdio transport boundary so shutdown does not print a traceback. HTTP transports keep their existing behavior. Validation: uv run pytest te...

Opengraph URL: https://github.com/modelcontextprotocol/python-sdk/pull/2671

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58f2d2a fix: exit cleanly on stdio KeyboardInterrupt he-yufeng May 23, 2026 https://github.com/modelcontextprotocol/python-sdk/pull/2671/commits/58f2d2aac9f7f6ea16b91d73cc29116ed383f388
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