X3 Compliance MCP Server

Give your AI assistant real safety and compliance tools. A free Model Context Protocol server that lets Claude, ChatGPT, Cursor, VS Code and other MCP clients check a driver's hours of service and qualification file, explain CSA scores, run DOT random selections, decide whether an injury is OSHA recordable, read safety data sheets, work out when an 811 ticket allows digging, compute pipeline MAOP, check mariner rest hours, quote any federal regulation from the official eCFR, and pull a vessel's Coast Guard record. Every answer comes from the rule text or official government data and cites it.

Built and maintained by X3: X3 Fleet Safety · X3 Workplace Safety · X3 Pipeline · X3 Maritime.

Setup page →

Tools

All tools are read-only. Nothing about your questions is sent anywhere except the public government APIs the CFR and Coast Guard tools call (ecfr.gov and cgmix.uscg.mil).

Related MCP server: mcp-osha

Install

Remote server (no install): add https://mcp.x3api.com/mcp as a custom connector in Claude (Settings → Connectors) or any client that supports remote MCP servers.

Claude Desktop, one click: download x3-compliance.mcpb and open it (or drag it into Settings → Extensions). Also listed in the MCP Registry as io.github.x3allamerican/x3-compliance-mcp.

Or run it with npx (Node.js 22.6 or later):

Claude Desktop (Settings → Developer → Edit Config), Cursor (~/.cursor/mcp.json) and most clients:

{
  "mcpServers": {
    "x3-compliance": {
      "command": "npx",
      "args": ["-y", "github:x3allamerican/x3-compliance-mcp"]
    }
  }
}

Claude Code:

claude mcp add x3-compliance -- npx -y github:x3allamerican/x3-compliance-mcp

VS Code (.vscode/mcp.json):

{ "servers": { "x3-compliance": { "type": "stdio", "command": "npx", "args": ["-y", "github:x3allamerican/x3-compliance-mcp"] } } }

Then ask things like:

• "Here's my driver's log for Monday and Tuesday. Any hours-of-service violations?"

• "An employee cut his hand, got 4 stitches and was back the next day. Is it OSHA recordable?"

• "We called in an 811 ticket in Ohio at 3 p.m. Monday. When can we dig?"

• "Quote 49 CFR 192.605(b) and tell me what changed in Part 192 since 2024."

• "Is the Certificate of Inspection current for the towboat ...?"

Use as a library

import { createServer } from '@x3/compliance-mcp';
const server = createServer();
await server.handle({ jsonrpc: '2.0', id: 1, method: 'tools/list' });

The server is dependency-free: JSON-RPC 2.0 over stdio, protocol versions 2025-06-18, 2025-03-26 and 2024-11-05. The engines are vendored in vendor/ from the X3 repos (node scripts/vendor.mjs .. refreshes them).

Privacy

No accounts and no stored data. See the privacy policy.

Limits

Decision support, not legal advice. Federal rules plus the three built-in 811 states. Ask your assistant to show the citation, and check it.

Develop

npm install
npm test             # in-process protocol and tool tests
MCP_E2E=1 npm test   # also runs the built binary over stdio
npm run build

License

MIT. Free for any use, including commercial.