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mcp/harbor
Verified official

Nostr Signer MCP

v0.4.0

com.frontiercrown.signer/nostr-signer

Approve Nostr signatures with your own browser signer without exposing a private key.

transport:streamable-http
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Target client

run in your project directory 

claude mcp add --transport http nostr-signer https://signer.frontiercrown.com/mcp

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.