fix(qr-server): remove deprecated FastMCP constructor args #312
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The Python SDK (modelcontextprotocol/python-sdk#1898) moved transport-specific parameters (port, stateless_http) from FastMCP constructor to run(). This broke the qr-server when run via stdio. The port is already passed directly to uvicorn.run() for HTTP mode, so these constructor args were redundant.
@modelcontextprotocol/ext-apps
@modelcontextprotocol/server-basic-react
@modelcontextprotocol/server-basic-vanillajs
@modelcontextprotocol/server-budget-allocator
@modelcontextprotocol/server-cohort-heatmap
@modelcontextprotocol/server-customer-segmentation
@modelcontextprotocol/server-map
@modelcontextprotocol/server-pdf
@modelcontextprotocol/server-scenario-modeler
@modelcontextprotocol/server-shadertoy
@modelcontextprotocol/server-sheet-music
@modelcontextprotocol/server-system-monitor
@modelcontextprotocol/server-threejs
@modelcontextprotocol/server-transcript
@modelcontextprotocol/server-video-resource
@modelcontextprotocol/server-wiki-explorer
commit: |
ochafik
reviewed
Jan 20, 2026
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| WIDGET_URI = "ui://qr-server/widget.html" | ||
| HOST = os.environ.get("HOST", "0.0.0.0") # 0.0.0.0 for Docker compatibility | ||
| PORT = int(os.environ.get("PORT", "3108")) |
Contributor
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can this be removed? does FastMCP use PORT / HOST and/or FASTMCP_PORT / FASTMCP_HOST?
ochafik
approved these changes
Jan 21, 2026
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The Python SDK (modelcontextprotocol/python-sdk#1898) moved transport-specific parameters (
port,stateless_http) fromFastMCPconstructor torun(). This broke the qr-server when run via stdio.The port is already passed directly to
uvicorn.run()for HTTP mode, so these constructor args were redundant.