arduino-mcp

name	arduino-mcp
description	Edit and build Arduino IDE 2.0 sketches via MCP.
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Arduino MCP Skill

Use this skill to edit Arduino IDE 2.0 sketches.

What this skill is for

• Validate a sketch folder
• Read and write the main .ino file
• List source files
• Compile with arduino-cli (optional)

Operating constraints

• Always ask for a projectRoot path.
• Keep changes small and incremental.
• Prefer editing the main .ino file unless the user asks otherwise.
• Never write outside projectRoot.
• Compiling requires arduino-cli and ARDUINO_FQBN.

Starting the servers

Start the REST server:

• arduino-claude-mcp or node dist/index.js

Start the MCP stdio server:

• node build/mcp.js

If the REST API uses a non-default port, set ARDUINO_API_URL or ARDUINO_API_PORT before launching the MCP server.

Tool usage pattern

1. validate
2. read_source
3. write_source / append_source
4. list_sources (optional)
5. build (optional)