Code-only MCP servers — agent-tools.cloud

MCP servers that ship as code — a repository or a package you install and run locally (usually over stdio). They have no hosted endpoint, so we cannot probe or grade them: instead each one shows its repository, install command, license, stars and when it was last updated.

Collected from GitHub repositories and npm, PyPI, Cargo, Go, Maven, NuGet and RubyGems packages tagged as MCP servers, the official MCP Registry, Docker's MCP catalog, ModelScope, Baidu MCP World, Cline and other public directories; one entry per repository. A server that also offers a hosted endpoint is listed under Remote instead. These entries are not counted in our reachability, verification or readiness statistics.

stmcp

github.com/phryniszak/stmcp
active

MCP server for debugging STM32 microcontrollers over ST-LINK, built on STMicroelectronics' own STM32CubeCLT toolset

GPL-3.0 ★ 1
openocd-mcp

github.com/microhenrio/openocd-mcp
updated this year

openocd-mcp is a lightweight Model Context Protocol (MCP) server that lets your AI assistant interact directly with microcontrollers through OpenOCD.

MIT ★ 5
openocd-mcp

github.com/microhenrio/openocd-mcp
updated this year

MCP server to debug microcontrollers from Claude through OpenOCD (flash, halt/step, memory/registers, breakpoints, variables and peripheral registers by name).

pypi MIT
ESP32-MCP-air-conditioner

github.com/MrLaki5/ESP32-MCP-air-conditioner
stale

Turn your Air Conditioner on/off and control it from a Chatbot application using this MCP server running on an ESP32 microcontroller

★ 6
P2-Knowledge-Base-MCP

github.com/ironsheep/P2-Knowledge-Base-MCP
active

An AI agent support MCP - extension providing access to our P2KB!

MIT ★ 1
serial-mcp

github.com/qarnet/serial-mcp
active

Serial port MCP server for Claude Code, Codex, Opencode and AI agents. Reliable UART/USB-serial access for embedded development.

MIT ★ 20
ironharness

github.com/cezman/ironharness
active

Safe I/O harness for LLM agents: serial, Modbus TCP, MQTT, file sandbox and ESP32 flashing behind an MCP server, with a JSONL audit journal - plus ironbench, a pass@k benchmark for firmware agents on Wokwi/Renode/real hardware.

MIT ★ 2
@iflow-mcp/shen-ming-hong-singular-blockly

github.com/shen-ming-hong/singular-blockly
updated this year

VS Code extension for visual Arduino & MicroPython programming with Blockly. Multi-board support (Uno, Nano, Mega, ESP32, CyberBrick), WiFi/MQTT IoT blocks, AI camera integration (Pixetto, HuskyLens), MCP server for GitHub Copilot, PlatformIO integration,

npm Apache-2.0