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mcp/harbor
Verified official

mcp libraryofcongress MCP

v3.0.1

io.github.smeet666/mcp-libraryofcongress

Search inside scanned US newspapers and browse the Library of Congress catalogue. No API key.

transport:stdio runtime:npm
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Target client

run in your project directory

Held in this page only — never stored, logged, or sent anywhere but back to your screen. 

claude mcp add mcp-libraryofcongress -e LOC_USER_AGENT=<LOC_USER_AGENT> -e LOC_MIN_INTERVAL_MS=<LOC_MIN_INTERVAL_MS> -e LOC_TIMEOUT_MS=<LOC_TIMEOUT_MS> -e LOC_NEWSPAPER_TIMEOUT_MS=<LOC_NEWSPAPER_TIMEOUT_MS> -e LOC_LOG_LEVEL=<LOC_LOG_LEVEL> -- npx -y mcp-libraryofcongress

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.