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Ship code you can trust

Magnitude is an open source coding agent that builds a spec with you, then implements it autonomously—writing and verifying in a loop until it works.

$ npm i -g @magnitude-dev/magnitude
Backed by Y Combinator
Claude OpenAI Gemini Grok DeepSeek Ollama Qwen OpenRouter Hugging Face

Runs locally with any model.

From the creators of Magnitude Browser Agent

4k+
GitHub stars
160k+ downloads
93.9% WebVoyager SOTA

The coding agent where correctness is a primitive.

$ npm i -g @magnitude-dev/magnitude