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mcp/harbor
Verified official

open primitive MCP

v1.2.0

io.github.writesdavid/open-primitive

33 tools, 30 US federal data domains. Ed25519 signed, provenance chains, entity graph. Free.

transport:stdio runtime:npm
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Target client

run in your project directory 

claude mcp add open-primitive -- npx -y open-primitive-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.