BrainChain MCP Server: Install & Setup

Install BrainChain in Claude Code

Claude Code

claude mcp add brainchain -e BRAINCHAIN_PAYER_KEY=... -- npx -y brainchain-mcp

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

{
  "mcpServers": {
    "brainchain": {
      "command": "npx",
      "args": [
        "-y",
        "brainchain-mcp"
      ],
      "env": {
        "BRAINCHAIN_PAYER_KEY": "..."
      }
    }
  }
}

Replace each ... with your own value.

Frequently asked questions

What does the BrainChain MCP server do?

Hire a frontier model for a task and pay in USDG or USDC only for work that meets the bar you set.

Is the BrainChain MCP server free?

Probably not entirely. The listing mentions pay-per-call, credits or a subscription. Check the provider for current pricing.

Does BrainChain run locally or remotely?

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

How do I add BrainChain to Claude Code?

Run: claude mcp add brainchain -e BRAINCHAIN_PAYER_KEY=... -- npx -y brainchain-mcp

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