LocalFree

Seatbelt MCP server

KryptosAI/mcp-seatbelt

MCP runtime security proxy. Blocks dangerous AI agent tool calls with a policy engine.

3 GitHub stars4 forks

Install Seatbelt in Claude Code

Claude Code
claude mcp add seatbelt -- npx -y @kryptosai/mcp-seatbelt
mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)
{
  "mcpServers": {
    "seatbelt": {
      "command": "npx",
      "args": [
        "-y",
        "@kryptosai/mcp-seatbelt"
      ]
    }
  }
}

Frequently asked questions

What does the Seatbelt MCP server do?

MCP runtime security proxy. Blocks dangerous AI agent tool calls with a policy engine.

Is the Seatbelt 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 Seatbelt run locally or remotely?

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

How do I add Seatbelt to Claude Code?

Run: claude mcp add seatbelt -- npx -y @kryptosai/mcp-seatbelt

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