An App and MCP Server for managing Raspberry Pi Pico and ESP32 boards with MicroPython or CircuitPython over USB.
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Pico Bay brings the filesystem, the console, and AI integration into one dependency-free tool for Windows, macOS, Linux, and Raspberry Pi OS.
Supports Pico, Pico W, Pico 2, Pico 2 W, ESP32, ESP32-C3, and ESP32-S3. Browse, create, upload, and download files across connected boards.
Run any Python file as __main__, stream program output to a live console, and interrupt programs safely with Ctrl-C.
Enable HTTP MCP in the app or launch an MCP client over stdio. AI agents can list boards, manage files, run Python, and install supported firmware.
Install official firmware directly from the app, with download, validation, installation, and reboot progress.
Raspberry Pi Pico: choose Reboot to BOOTSEL, or hold BOOTSEL while reconnecting USB. Select the red board pill and the matching Pico model.
ESP32: choose Enter download mode, scan, and select the red DOWNLOAD pill. Pico Bay identifies supported chips, checks flash security, and downloads and verifies the latest generic MicroPython build.
ESP32 installation selects Erase and initialize storage by default. Uncheck it to preserve existing files. Unsupported or protected chips cannot be installed.
Install Node.js 20 or newer on Windows, macOS, Linux, or Raspberry Pi OS, then run:
npx @ctrlpi/pico-bay
Connect a MicroPython or CircuitPython board with a USB data cable. Open http://localhost:7426 if the browser does not open automatically. On a Raspberry Pi host, open http://PI_ADDRESS:7426 from another device on your LAN.
On Windows, startup builds the serial helper using the .NET Framework v4 C# compiler (csc.exe). ESP32 boards may also require their USB serial driver. See the setup FAQ.
For MCP setup and the full command reference, see the package documentation. Subscribe for updates below.
Connect Claude directly to your physical USB boards.
Point an MCP entry at npx @ctrlpi/pico-bay
{
"mcpServers": {
"pico-bay": {
"command": "npx",
"args": ["-y", "@ctrlpi/pico-bay", "--mcp-stdio"]
}
}
}Manage your boards, files, and firmware right from the chat:
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