MCP Libraryofcongress vs Nace MCP

In-depth architectural comparison of the MCP Libraryofcongress and Nace MCP MCP servers. Compare execution transports, security boundaries, tool capabilities, quality scores, and ready-to-paste client installation snippets for Claude, Cursor, Windsurf, and VS Code.

Which MCP Server Should You Choose?

Choose MCP Libraryofcongress when:

• You need dedicated capabilities in the Developer Tools domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).

Explore MCP Libraryofcongress Details

Choose Nace MCP when:

• You need dedicated capabilities in the Developer Tools domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).

Explore Nace MCP Details

Feature & Specification Comparison

Specification	MCP Libraryofcongress Developer Tools	Nace MCP Developer Tools
Summary	Search inside scanned US newspapers and browse the Library of Congress catalogue. No API key.	Browse, search and fuzzy-match NACE Rev. 2.1 economic activity classification codes.
Category & Scope	Developer Tools	Developer Tools

Tools & Capabilities Breakdown

Ready-to-Paste Client Configurations

Paste either (or both) of these JSON server blocks into your client config file (e.g. claude_desktop_config.json or ~/.cursor/mcp.json).

{
  "mcpServers": {
    "mcp-libraryofcongress": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-libraryofcongress"
      ]
    }
  }
}

{
  "mcpServers": {
    "nace-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/inspector"
      ]
    }
  }
}

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