the MCP for your microcontroller
Give Claude Code, Claude Desktop, Cursor — any MCP-speaking agent — real hands on a real board. Enumerate connected boards, flash firmware, read and write serial, and drive GPIO, ADC, PWM, I2C and SPI over USB, for ESP32, RP2040/RP2350 (Pico), and Arduino Uno R4 today.
The pin and bus tools ride MicroPython's REPL on an ESP32 or Pico and a small bridge sketch on an Arduino. As of 2026-09-20 they have been proven against the real MicroPython interpreter in a simulator and not yet on a physical board; the quickstart says what is proven where.
Free, ad-free, forever
The full desktop MCP server is free: unlimited local boards, every supported family, no ads, no telemetry unless you opt in.
Pro — $20 one-time
Unlocks the phone bridge: the companion app links to a Bluetooth LE board and relays its serial port to the desktop server, so your agent can reach a board that is not plugged into your computer. One price, no subscription. Arriving with the phone app: it goes on sale when the companion app is in the stores.