ThumbGate — PreToolUse Agent Firewall for Claude Code

io.github.igorganapolsky/thumbgate

Sub-ms PreToolUse firewall, feedback memory, and single-use permits for AI coding agents.

client:Claude Code transport:stdio runtime:npm

Install ThumbGate — PreToolUse Agent Firewall in Claude Code

run in your project directory

claude mcp add thumbgate -- npx -y thumbgate

Adds it for this project only. Append --scope user to make it available everywhere. Claude Code docs