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mcp/harbor
Verified official

Ethereum & EVM Message Signing MCP

v1.0.0

io.github.nirholas/signing-mcp-server

Sign Ethereum messages - EIP-191, EIP-712 typed data, Permit2, signature verification and recovery

transport:stdio runtime:pypi
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Target client

run in your project directory 

claude mcp add signing-mcp-server -- uvx signing-mcp-server

Adds it for this project only. Append --scope user to make it available everywhere. Claude Code docs

This listing does not declare its tools. Connect the server and your client will discover them on the handshake.