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Copperhead

Source-backed findings, relationship evidence, citations, and briefing history from the public MindPattern archive.

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2026-09-09 / projects-researcherCopperhead is an agentic KiCad workflow that edits s-expression source files instead of regenerating themA Show HN at 234 points, Copperhead runs an agent over KiCad projects and outputs gerbers, firmware and docs while keeping schematics, docs and budgets in sync. The design choice that matters is surgical edits to KiCad s-expression source so diffs stay small and reviewable, with verification handed to KiCad's own ERC and DRC rather than an LLM judge. Traction is small and honest at 195 GitHub stars and 513 monthly npm installs, with the CLI Apache-2.0 and cloud at $49 per user per month, free for open hardware.

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Copperhead runs an agentic workflow over KiCad projects and outputs gerbers and firmware.
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