Add uvx and uv transport support for Python MCP servers#3
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- Add UvxStdioTransport for `uvx package` commands - Add UvStdioTransport for `uv run script.py` commands - Pass parent environment variables to all stdio transports (npx, uvx, uv, python) This ensures credentials set via `env` in MCP client config reach upstream servers - Update README with Python MCP server example (mcp-atlassian) - Add documentation about environment variable passthrough - Add unit tests for transport input validation Tested with mcp-atlassian via uvx - successfully loads Jira tools. Fixes pro-vi#2 Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Finndersen
approved these changes
Feb 24, 2026
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| async def _connect_stdio(fastmcp: Any, command: str, args: Optional[List[str]]) -> Any: | ||
| import os |
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Summary
UvxStdioTransportdetection foruvx packagecommands (Python equivalent ofnpx)UvStdioTransportdetection foruv run script.pycommandsenvin MCP client config reach upstream serversTest plan
pytest -v)UvxStdioTransportinstantiation works correctlyRelated
Fixes #2
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