CARBON MCP Server: Install & Setup

Install CARBON in Claude Code

Claude Code

claude mcp add jarbon-carbon -- npx -y @testers-ai/carbon-mcp

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

{
  "mcpServers": {
    "jarbon-carbon": {
      "command": "npx",
      "args": [
        "-y",
        "@testers-ai/carbon-mcp"
      ]
    }
  }
}

Frequently asked questions

What does the CARBON MCP server do?

AI testing harness with Jay: risk-based checks, bug investigation, and local evidence reports.

Is the CARBON 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 CARBON run locally or remotely?

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

How do I add CARBON to Claude Code?

Run: claude mcp add jarbon-carbon -- npx -y @testers-ai/carbon-mcp

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