RippleCheck scans your JS/TS/Python codebase and shows exactly what breaks before AI tools like Claude Code, Cursor, or Codex change your code. It uses real local AST analysis (not LLM guesses) to detect impact, explain it in plain English, and generate copyable fix prompts. Runs 100% locally with no telemetry. Available as a Desktop App, MCP Server, and CLI. Free forever, MIT licensed.