io.github.MR901/mcp-plots

Is the io.github.MR901/mcp-plots MCP server down? Yes. It has given no valid answer since 2026-10-16: crashed on start.

MCP server for data visualization with Mermaid charts.

crashed on start down since 2026-10-16 · probed 2026-11-14 · unchanged since 2026-10-30

MCP error -32000: Connection closed
ModuleNotFoundError: No module named 'mcp.server.fastmcp'. This is mcp 2.x, where FastMCP was renamed to MCPServer (from mcp

Run it: uvx mcp-plots@0.0.2 (stdio, probed in a container with the network off)
Host: pypi.org
Repository: https://github.com/MR901/mcp-plots
Registry: active, updated 2025-09-24 · registry entry

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For the publisher

No valid answer since 2026-10-16, in every probe since then.
The package stops at the import of FastMCP from mcp.server.fastmcp. mcp 2.0, the Python SDK of 28 July 2026, renamed FastMCP to MCPServer, and a plain install gets mcp 2.x. Pin mcp<2 in the dependencies, or move to MCPServer as the SDK's migration guide says. The error output is above.

The cause and the fix, with the code before and after: ModuleNotFoundError: No module named 'mcp.server.fastmcp'