Show HN: Copperhead – Hardware as Fast as Software

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An open-source AI agent that designs, documents and validates real PCBs from a prompt.

Opening excerpt

Cursor for circuit boards . Copperhead is an open-source AI engineering platform that helps hardware teams design, verify and ship circuit boards.

Microsoft for Startups Google for Startups Activate Clerk Supabase Google Workspace Sarvam AI Hugging Face Microsoft for Startups Google for Startups Activate Clerk Supabase Google Workspace Sarvam AI Hugging Face Proven on copper How it works Eight stages, start to finish. You write the brief. copperhead runs the stages in order, each one its own agent run. A stage has to leave its artifact on disk before the next starts. If a gate fails, the run stops there.

Pricing Pay to not run it yourself. copperhead is open core. The CLI is free and always will be, and it does the real work on its own. You pay to host it, to work as a team or to give an auditor what they ask for.

The full agent: do, create, init, check, watch Bring your own Claude or GPT-5 key Runs on your KiCad files, in your own git repo Plain markdown, JSON and KiCad output. No lock-in.

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