Arduino MCP Server
Let your coding agent run Arduino CLI workflows—detect boards, compile, upload sketches, monitor serial, and look up pins—from the repo without leaving the editor.
Overview
Arduino MCP Server is a MCP server for the Build phase that wraps Arduino CLI for board detection, compile and upload, serial monitoring, and pin references over stdio.
What is this MCP server?
- stdio npm package arduino-mcp-server (v0.2.8) for local MCP transport
- Arduino CLI setup, board detection, compile, upload, and serial monitoring tools
- Pin reference helpers for sketch and wiring conversations
- Optional ARDUINO_CLI_PATH override when the binary is not on PATH
- Optional ARDUINO_SKETCH_ROOT filepath sandbox for sketch operations
- Published package version 0.2.8
- stdio transport via npm identifier arduino-mcp-server
- 2 documented environment variables: ARDUINO_CLI_PATH and ARDUINO_SKETCH_ROOT
Community signal: 12 GitHub stars.
What problem does it solve?
Agent-assisted firmware work stalls when you manually relay board ports, CLI errors, and serial logs instead of exposing Arduino tooling to the model.
Who is it for?
Indie hardware hackers and full-stack solos who already use Arduino CLI and want MCP-native compile/upload loops in Claude Code or Cursor.
Skip if: Builders without local Arduino boards, arduino-cli, or those who need cloud OTA fleet management only.
What do I get? / Deliverables
Your agent drives arduino-cli operations from the project context so sketches compile, upload, and debug faster with optional sketch-directory guardrails.
- Board detection and compile/upload results surfaced to the agent
- Serial monitor streams for debugging sessions
- Pin reference data aligned to active sketch work
Recommended MCP Servers
Journey fit
Firmware and hardware bring-up belong in the build phase when you wire physical products and agent tooling to real devices. Integrations subphase captures MCP as the bridge between your agent and local arduino-cli plus sketch directories.
How it compares
Local Arduino CLI MCP bridge, not a standalone embedded IDE plugin or cloud device platform.
Common Questions / FAQ
Who is Arduino MCP Server for?
Solo builders and small teams using MCP agents to develop Arduino sketches on a machine with arduino-cli and hardware attached.
When should I use Arduino MCP Server?
Use it while building firmware integrations—detecting boards, compiling, uploading, and reading serial output during active hardware iteration.
How do I add Arduino MCP Server to my agent?
Install the npm package arduino-mcp-server, add it as a stdio MCP server in your client config, set ARDUINO_CLI_PATH or ARDUINO_SKETCH_ROOT if needed, and ensure arduino-cli is on PATH.