Show HN: Gauge – Open-Source CLI to recursively improve your docs

Gauge is an open-source CLI tool that helps improve documentation and developer experience by running coding agents against your product to identify where they struggle, then allows you to test fixes locally before publishing. It analyzes real agent sessions to find issues like blocked commands, deprecated APIs, unused features, or unclear workflows, and supports agents like Claude Code, Codex, Pi, and OpenCode. The tool runs entirely locally with Docker and requires no Gauge account, using your existing agent subscriptions or API keys.