Turns thumbs-down feedback into executable prevention rules that block AI agents from repeating mistakes before the tool call executes. The PreToolUse hook intercepts risky actions like force-pushes, destructive file operations, or API calls that match patterns learned from prior sessions. One thumbs-down creates a rule, next session the agent gets blocked with zero tokens spent. Ships with a context brain generator that consolidates lessons, guardrails, and gates into a single agent-readable markdown file your repo can version in git. Free tier gives you unlimited feedback capture and five active rules. Works with Claude Code, Cursor, Gemini CLI, Cline, and any MCP-compatible agent. Designed for workflows where one repeated mistake is a liability event or a token bill you don't want to pay twice.
claude mcp add --transport stdio igorganapolsky-thumbgate uvx thumbgate