Copperhead
Copperhead is an open-source AI engineering platform that acts as a cursor for circuit boards, allowing users to design, document, and verify PCBs directly within their existing KiCad repositories. It automates design changes by reading and editing KiCad source files and verifying them through automated ERC and DRC checks.
As of late 2026, Copperhead has matured its agent loop to include structured, gated stages (Spec, Architecture, Parts, Schematic, Layout, Outputs, Firmware, Dev plan) ensuring that each phase of hardware development is verified before the next begins.
As of
- Autonomous PCB design, documentation, and verification using natural language prompts
- Works directly on native KiCad files (.kicad_sch,.kicad_pcb) without proprietary formats
- Automated ERC/DRC verification and design drift detection
- Model-agnostic support (Claude, GPT-5, and others)
- Full pipeline creation from a markdown product brief to gerbers, BOM, and firmware scaffolds
Hardware teams and indie builders using KiCad who want to automate design iteration, ensure documentation stays in sync with schematics, and reduce design drift.
Users working with proprietary EDA software (e.g., Altium Designer, Allegro) or those seeking an automated tool that claims to be a fully qualified, fab-ready hardware engineer replacement.
The CLI is free and open-source (Apache-2.0). Cloud hosting and team features start at $49/user/month, with team plans at $49/user/month plus a $199/month platform fee. Enterprise plans offer custom flat annual pricing for self-hosted/VPC deployments.
An exceptionally practical AI agent for hardware engineering that prioritizes verifiable, high-quality engineering outputs and open file formats over proprietary walled gardens.
Is Copperhead free?
Copperhead is Freemium. The CLI is free and open-source (Apache-2.0). Cloud hosting and team features start at $49/user/month, with team plans at $49/user/month plus a $199/month platform fee. Enterprise plans offer custom flat annual pricing for self-hosted/VPC deployments. Check the official site for current plans.
What is Copperhead best for?
Hardware teams and indie builders using KiCad who want to automate design iteration, ensure documentation stays in sync with schematics, and reduce design drift.
Who makes Copperhead?
Copperhead is developed by Chouhan Industries. It is listed in the Hardware & Edge AI category on ai.dosa.dev.
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