Cejel MCP Server: Install & Setup

Install Cejel in Claude Code

Claude Code

claude mcp add cejel -- docker run -i --rm ghcr.io/barglabs/cejel@sha256:12372dededed8fbdbe6d1061e6792e3d83e51d0640899dfbc1f8189f8ea67daa

mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)

{
  "mcpServers": {
    "cejel": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "ghcr.io/barglabs/cejel@sha256:12372dededed8fbdbe6d1061e6792e3d83e51d0640899dfbc1f8189f8ea67daa"
      ]
    }
  }
}

Frequently asked questions

What does the Cejel MCP server do?

Offline deterministic engineering-trust certificates for repositories, with no telemetry.

Is the Cejel MCP server free?

Yes, most likely. Open source and no paid account or API key is mentioned in the listing. Check the provider for current pricing.

Does Cejel run locally or remotely?

Local. Runs on your machine (stdio). You install it with npx, uvx, Docker or from source.

How do I add Cejel to Claude Code?

Run: claude mcp add cejel -- docker run -i --rm ghcr.io/barglabs/cejel@sha256:12372dededed8fbdbe6d1061e6792e3d83e51d0640899dfbc1f8189f8ea67daa

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