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Top 13 C++ mcp Projects
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lemonade
Lemonade helps users discover and run local AI apps by serving optimized LLMs right from their own GPUs and NPUs. Join our discord: https://discord.gg/5xXzkMu8Zk
Project mention: AMD Releases Lemonade 11.0 Local AI Server with Text-to-Speech and New Features | news.ycombinator.com | 2026-07-16 -
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Gearboy
Game Boy / Game Boy Color / Super Game Boy emulator, debugger and embedded MCP server for macOS, Windows, Linux, BSD and RetroArch.
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UnrealClaude
Claude Code CLI integration for Unreal Engine 5.7 - Get AI coding assistance with built-in UE5.7 documentation context directly in the editor.
You see the problem is, inside Unreal Engine everything is serialized binary data, stored as a .uasset file. So when I fire up Claude Code to have him review my blueprints, he can't. I search all over the internet, scouring in shock and dismay that somehow this is not a well solved problem. How is it even possible there isn't a full solution for this already, that an LLM can understand what's inside a .uasset? Admirable folks had begun putting up the foundations, but the gap was still very real. I started with the UnrealClaude plugin https://github.com/Natfii/UnrealClaude as the base (shoutout to Natfii, he created a lot of the base capabilities I built on top of, could not have done it without him). It has capability to create blueprints, but limited capability to parse existing ones as an exposed operation. So I leverage existing code in the plugin, and extend it so it can read blueprints in Unreal. And after that — aha! One of the boxes in one of the nodes was 1 when it should have been 10, Claude caught it first try once he could see it. Roadblock removed, I am back on track!
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agent-browser-protocol
Deterministic browser automation. Works out of the box with Claude/Codex/OpenCode
Project mention: Show HN: Open-source browser for AI agents (~90% on Mind2Web) | news.ycombinator.com | 2026-03-11those are factored into the wait heuristic only if there's a navigation event since clicks on an already loaded page won't trigger those. You can point Claude/codex at https://github.com/theredsix/agent-browser-protocol/tree/dev... and have it walk you through the wait heuristic step by step.
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tuisic
First of its kind, A simple TUI online music streaming application written in c++ with easy vim motions, now with support for Model Context Protocol (MCP)
Project mention: Show HN: Tuisic v2 – Now with visualizer and AI (MCP server) support | news.ycombinator.com | 2025-11-12 -
ByteAsk-Embedded-MCP
The open-source MCP server behind ByteAsk Embedded Docs: a source-grounded, page-cited evidence-retrieval server for coding agents (Claude Code, Codex, Cursor) that write firmware / driver / protocol code and need exact facts.
Project mention: Show HN: An open MCP that gives coding agents page-cited embedded datasheets | news.ycombinator.com | 2026-06-23 -
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RisalDash
Beautiful real-time web dashboards for ESP32 / ESP8266 in a few lines of C++ — a modern ESP UI & ESPUI alternative. Offline-first AP + captive portal, WebSocket, 26 widgets, i18n (EN/RU/AR), and AI control via MCP.
Project mention: Control your ESP32 from an AI agent: MCP + a few lines of C++ | dev.to | 2026-06-28I use RisalDash — an ESP32/ESP8266 library where you declare widgets in C++ and it generates the whole web UI and the protocol. The same widget declaration that powers the human dashboard also defines the agent's tools.
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shaderc-vkrunner-mcp
A toy MCP to let AI agents do SW-emulated Vulkan through Mesa, VkRunner, shaderc, and Docker
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unreal-harness
Multitool Unreal Engine Harness for Claude Code ~ 300 Editor Actions, 20+ skills, integrated with AWS/Pulumi, Neo4J, Gemini (vision), GIMP, and more. A full stack harness and custom MCP.
Project mention: My Side-Project, a Multitool Harness for Unreal Engine and Claude Code | news.ycombinator.com | 2026-07-03 -
mcpd
MCP Server SDK for Microcontrollers — Expose ESP32/RP2040 hardware as AI-accessible tools via Model Context Protocol (by quantumnic)
Project mention: Show HN: Mcpd – MCP Server SDK for Microcontrollers (ESP32/RP2040) | news.ycombinator.com | 2026-02-17 -
llm_invoke_cpp
Provide a framework enabling LLMs to invoke C++ functions through JSON-based interfaces.
Project repository: writePerfectCode/llm_invoke_cpp: Provide a framework enabling LLMs to invoke C++ functions through JSON-based interfaces.
NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
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A note from our sponsor - SaaSHub
www.saashub.com | 18 Jul 2026
Index
What are some of the best open-source mcp projects in C++? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | lemonade | 4,959 |
| 2 | Gearboy | 1,176 |
| 3 | UnrealClaude | 854 |
| 4 | agent-browser-protocol | 477 |
| 5 | tuisic | 68 |
| 6 | ByteAsk-Embedded-MCP | 23 |
| 7 | agentty | 21 |
| 8 | RisalDash | 13 |
| 9 | LlamaRun | 9 |
| 10 | shaderc-vkrunner-mcp | 6 |
| 11 | unreal-harness | 4 |
| 12 | mcpd | 2 |
| 13 | llm_invoke_cpp | 1 |
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