{"repo":"Cognitohazard/ltspice-mcp","free":true,"listed":false,"github":"https://github.com/Cognitohazard/ltspice-mcp","clone":"git clone https://github.com/Cognitohazard/ltspice-mcp.git","description":"MCP server giving LLMs the ability to design, simulate, and analyze SPICE circuits via LTSpice and NGspice","language":"Python","stars":28,"topics":["ai-tools","anthropic","circuit-design","circuit-simulation","circuit-simulator","claude","eda","electronics","ltspice","mcp"],"license":"GPL-3.0","category":"mcp-servers","readme_excerpt":"ltspice-mcp Rewrite in progress to improve token usage efficiency while maintaining the speed advantage this mcp offers compared to no-mcp capable coding agent. WIP: Core functionality is usable but expect rough edges and breaking changes. An MCP server that connects LLM assistants (Claude, and any other MCP client) to real circuit simulation: LTspice and ngspice, plus direct editing of LTspice .asc schematics. Simulation results come back as structured numbers — cutoff frequencies, overshoot, phase margin, rise times, and per-device small-signal operating-point parameters (gm, gds, vth, …) read back by name — so the assistant can design, verify, and iterate on circuits in the same files you open in LTspice, without ever hand-parsing a rawfile. Built on spicelib. Quick start In Claude Code, install the plugin: You also need LTspice or ngspice on the host (auto-detected on Windows, Linux, and macOS; on WSL set the LTspice path explicitly — WSL notes). Netlist editing ( .cir / .net ) works with no simulator at all; .asc schematic editing needs LTspice's .asy symbol libraries. uv is required; the server itself is fetched from PyPI on first use. Manual install (any MCP client) Install the server, then point your client at it: Claude Code — one command (drop -s project to install it globally): Other clients — Claude Desktop, Cursor, Windsurf, Gemini CLI, Continue, Cline, Zed and others — add this mcpServers stanza to the client's MCP config file (each client documents its own path","default_branch":null,"files":null,"tree":[],"storefront":"/r/Cognitohazard","claimed":false,"request_supported":{"post":"https://gitbuyer.com/r/Cognitohazard/ltspice-mcp/request-supported","requests":0},"note":"indexed from public GitHub; nothing is for sale on this page. Clone it from GitHub. Paid listings live at /search."}