LocalFree server, account needed

Thebrain MCP server

yBookoff/thebrain-mcp

MCP server for TheBrain 15: search by meaning, graph traversal and batch writes over the local API

8 GitHub stars1 forks803 npm downloads / month
Source code

Install Thebrain in Claude Code

Claude Code
claude mcp add thebrain -e THEBRAIN_API_KEY=... -- npx -y thebrain-mcp-server
mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)
{
  "mcpServers": {
    "thebrain": {
      "command": "npx",
      "args": [
        "-y",
        "thebrain-mcp-server"
      ],
      "env": {
        "THEBRAIN_API_KEY": "..."
      }
    }
  }
}

Replace each ... with your own value.

Frequently asked questions

What does the Thebrain MCP server do?

MCP server for TheBrain 15: search by meaning, graph traversal and batch writes over the local API

Is the Thebrain MCP server free?

The server is free, but you will likely need an account. The server itself is free, but it connects to a service that needs an account or API key, which may have paid tiers. Check the provider for current pricing.

Does Thebrain run locally or remotely?

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

How do I add Thebrain to Claude Code?

Run: claude mcp add thebrain -e THEBRAIN_API_KEY=... -- npx -y thebrain-mcp-server

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