xavi-999/metrognome
3 stars · Last commit 2026-06-13
The autonomous performance engineer for React Native — a Claude Code plugin: propose → measure → keep/revert loop, 3D Perf Map, per-repo perf memory.
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 [](https://github.com/xavi-999/metrognome/actions/workflows/ci.yml) [](https://github.com/xavi-999/metrognome/releases) [](https://www.npmjs.com/package/metrognome) [](https://www.npmjs.com/package/metrognome) [](./LICENSE) [](https://xavi-999.github.io/metrognome/) > **The autonomous performance engineer for React Native.** `/metrognome`: one command turns scattered RN performance tooling into a single, scientific loop — **propose → measure → keep/revert** — that ships gains it can prove. For any React Native developer chasing TTI, memory leaks, jank, bundle size, or re-renders: one `/metrognome` call researches, optimizes, and verifies autonomously — and every gain it reports is one it measured. One input, zero human interaction, flabbergasting performance improvements. Works with **Claude Code, OpenAI Codex CLI, Cursor, Gemini CLI, and GitHub Copilot CLI.** Inspired by OpenAI co-founder Andrej Karpathy's `/autoresearch` [skill](https://github.com/karpathy/autoresearch). Fully adapted to React Native. ## What `/metrognome` solves