ThumbGate

local MCP server

Installation

Terminal

claude mcp add thumbgate -- npx -y thumbgate

Run in your project folder. Add --scope user to use it everywhere.

Add to claude_desktop_config.json or .cursor/mcp.json.

{
  "mcpServers": {
    "thumbgate": {
      "command": "npx",
      "args": [
        "-y",
        "thumbgate"
      ]
    }
  }
}

Pre-action gates that block AI agents from repeating known mistakes.

ThumbGate is a local MCP server distributed as the npm package thumbgate.

Run: claude mcp add thumbgate -- npx -y thumbgate

Run: codex mcp add thumbgate -- npx -y thumbgate

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