Serial MCP Server

Let AI agents interact with serial devices — list ports, connect, send, and read.

Local serverstdioPython

What is the Serial MCP Server?

Let AI agents interact with serial devices — list ports, connect, send, and read.

The short version

A stateful serial port Model Context Protocol (MCP) server for developer tooling and AI agents. Works out of the box with Claude Code, VS Code with Copilot, and any MCP-compatible runtime. Communicates over stdio and uses pyserial for cross-platform serial on macOS, Windows, and Linux.

  • Develop and debug — — connect to your device, send commands, read responses, and diagnose issues conversationally (boot banners, prompts, error codes)
  • Iterate on new firmware — — attach a protocol spec so the agent understands your command set, boot modes, and output format as they evolve
  • Automate test flows — — reset device via DTR, wait for prompt, run a command sequence, validate output
  • Explore unknown devices — — probe command sets, discover prompts, infer message formats
  • Build serial automation — — long-running test rigs, manufacturing bring-up, CI hardware smoke tests

More MCP options

Compare MCP servers by category, or browse hosted MCP servers if you prefer an endpoint over a local process.

Maintainer setup documentation.

Configuration

VariableDescriptionRequired
SERIAL_MCP_PLUGINSConfiguration value read at startup.Optional
SERIAL_MCP_TOOL_SEPARATORConfiguration value read at startup.Optional

Example prompts to try

  • “Use Serial to Category.”
  • “Use Serial to Introspection.”
  • “Use Serial to Tracing.”

Frequently asked questions

Let AI agents interact with serial devices — list ports, connect, send, and read. Confirm the tools offered by your installed version in the connected client. Tool availability and permissions depend on the server and account configuration.