io.github.gra-kir/solsigs-mcp
SolSigs MCP
Is the SolSigs MCP server down? Yes. It has given no valid answer since 2026-10-18: crashed on start.
23 Solana on-chain data tools for AI agents via x402 micropayments + rug-screen token verdict
crashed on start down since 2026-10-18 · probed 2026-11-14 · unchanged since 2026-11-01
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 solsigs-mcp@0.3.1 (stdio, probed in a container with the network off)
- Host
- pypi.org
- Registry
- active, updated 2026-06-16 · registry entry
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Badge for the README
The result of the latest probe, the tool count and the token cost. The feed has an entry for every probe that changed them.
A mail when this server changes
Stops answering, comes back, tool set or cost changes. One confirmation mail first, a stop link in every mail.
For the publisher
- No valid answer since 2026-10-18, 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'