# Koppar

> Koppar is AI PCB design from a text description: describe a circuit in plain English and get a KiCad schematic, a placed and routed board with zero DRC errors and every net connected, a bill of materials priced from live distributor stock, and Gerbers ready for the fab.

The full documentation, including the MCP server, CLI and REST API for driving Koppar from your own agent, is at https://docs.koppar.ai/llms.txt.

## Product

- [Koppar](https://koppar.ai/): AI PCB design, from a sentence to a fab-ready PCB.
- [Example boards](https://koppar.ai/boards/): real boards Koppar designed from one sentence, with KiCad files, Gerbers and a priced BOM.
- [Manufacturing](https://koppar.ai/manufacturing/): from a clean KiCad board to a fab order with JLCPCB, PCBWay and AISLER.
- [Koppar for KiCad](https://koppar.ai/koppar-kicad-plugin/): a KiCad plugin that routes, places, finishes and checks the open board, and designs new boards from a description. KiCad 7 to 10.
- [Free PCB tools for KiCad](https://tools.koppar.ai/): no sign-up, in the browser: [PCB autorouter](https://tools.koppar.ai/kicad-autorouter), [PCB design rule check](https://tools.koppar.ai/kicad-drc-check), [Gerber files, IPC-2581 and ODB++](https://tools.koppar.ai/kicad-to-gerber), [Gerber viewer](https://tools.koppar.ai/gerber-viewer), [PCB viewer](https://tools.koppar.ai/kicad-pcb-viewer), [schematic viewer](https://tools.koppar.ai/kicad-schematic-viewer), [footprint viewer](https://tools.koppar.ai/kicad-footprint-viewer), [netlist to PCB](https://tools.koppar.ai/netlist-to-pcb), [netlist to schematic](https://tools.koppar.ai/netlist-to-schematic) and [netlist viewer](https://tools.koppar.ai/kicad-netlist-viewer). The PCB and schematic viewers open files from public GitHub, GitLab and Codeberg links.

## Example boards

- [ESP32-C3 sensor board](https://koppar.ai/boards/esp32c3-sensor/): USB-C, LiPo charging with power path, buck-boost 3.3 V, BME280 on I²C.
- [USB-C breadboard power supply](https://koppar.ai/boards/maker-psu/): 5 V and 3.3 V rails, resettable fuse, on/off switch, power LED.
- [STM32 CAN-bus sensor node](https://koppar.ai/boards/stm32-can-node/): STM32G0, SN65HVD230, 3.3 V buck, protected 12 V input, SPI flash.

## Docs

- [Documentation index](https://docs.koppar.ai/llms.txt): every docs page with a one-line summary.
- [Quickstart](https://docs.koppar.ai/quickstart.md): from sign-in to Gerbers in the Koppar studio.
- [Drive Koppar from your own agent](https://docs.koppar.ai/agents/overview.md): Claude Code, any MCP client, the CLI or REST.
- [FAQ](https://docs.koppar.ai/faq.md): 4-layer boards, real KiCad files, parts, BOM prices, privacy, prices and fabs.

## Optional

- [Benchmarks](https://koppar.ai/benchmarks/): autorouter benchmark on eight open-hardware KiCad boards, scored by kicad-cli ratsnest and DRC.
- [Blog](https://koppar.ai/blog/): notes on AI PCB design, KiCad and autorouting.