MCP.Market

Library Of Congress MCP server

online · 100% uptime
by pipeworx-io·io.github.pipeworx-io/library-of-congress·v0.1.0
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Library of Congress (loc.gov) MCP — the world's largest library.

A87/100grade A
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Safety scan
A87/100

full report

Adoption
Growing

0 stars

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Library Of Congress tools

Tool list not cached yet. `describe` through the gateway fetches it live.

Public scan report

scanner v0.1.9 · 2026-09-26 · same rubric, same numbers if you re-run it

no findings
  • –Code scanremote-only server, no package to scann/a
  • Live reliabilityremote reachable in 336ms; handshake note: Streamable HTTP error: Error POSTing to endpoint: {"jsonrpc":"2.0","id":0,"error":{"code":-32602,"message":"Unknown pack20/20
  • –Tool poisoningtools not inspected (endpoint requires auth); not countedn/a
  • Auth qualityopen endpoint, read-only tools10/15
  • Maintenancelast push 8 days ago15/15
  • Maintainer identityregistry namespace matches repository owner7/10
Overall 87/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

How Library Of Congress compares

Against every graded MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score
87/100
higher than 73% of 48,255 servers
Uptime
100%
of our recent checks; the typical remote server answers 100%
Response time
4 ms
faster than 99% of 30,031 servers

Install Library Of Congress in Claude Code, Cursor or VS Code

claude mcp add --transport http library-of-congress https://gateway.pipeworx.io/library-of-congress/mcp
Add to Cursor

What the publisher says

From the Library Of Congress repository's README, as published. We do not edit it. Read it on GitHub

mcp-library-of-congress

Library of Congress (loc.gov) MCP — the world's largest library.

Part of Pipeworx — an MCP gateway connecting AI agents to 965+ live data sources.

Tools

Quick Start

Add to your MCP client (Claude Desktop, Cursor, Windsurf, etc.):

{
  "mcpServers": {
    "library-of-congress": {
      "url": "https://gateway.pipeworx.io/library-of-congress/mcp"
    }
  }
}

Or connect to the full Pipeworx gateway for access to all 965+ data sources:

{
  "mcpServers": {
    "pipeworx": {
      "url": "https://gateway.pipeworx.io/mcp"
    }
  }
}

Using with ask_pipeworx

Instead of calling tools directly, you can ask questions in plain English:

ask_pipeworx({ question: "your question about Library Of Congress data" })

The gateway picks the right tool and fills the arguments automatically.

More

  • All tools and guides
  • pipeworx.io

License

MIT

No MCP client? Call it over HTTP

curl -X POST https://gateway.pipeworx.io/v1/tools/search \
  -H 'Content-Type: application/json' \
  -d '{"query":"Civil War photographs"}'

No account needed for the first calls. Inspect any tool: GET https://gateway.pipeworx.io/v1/tools/search. Find one: POST https://gateway.pipeworx.io/v1/tools/search_packs with {"query":"..."}.

Nothing above is checked by us. What we check is on the safety report.

Library Of Congress: common questions

Is Library Of Congress MCP server safe?
Yes, by our scan: it is graded A (87/100). Read the Library Of Congress safety report
How do I install Library Of Congress?
It runs remotely at gateway.pipeworx.io. Add it to Claude Code, Cursor, VS Code or Claude Desktop with the snippets above, or call it through the mcp.market gateway without installing anything.
Does Library Of Congress need an API key?
Not as far as the registry entry and our scan can tell: no credentials are declared or required.
Is Library Of Congress maintained?
The last commit was 46 days ago (2026-09-18). The latest release is v0.1.0.
Is Library Of Congress up?
100% of our last 28 checks got an answer. We check remote servers about four times a day.
How does Library Of Congress compare with other MCP servers?
safety score 87/100 (higher than 73% of 48,255 servers); uptime 100% (of our recent checks; the typical remote server answers 100%); response time 4 ms (faster than 99% of 30,031 servers). Full comparison.

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