Getting Started

mcltspice is an MCP server that drives LTspice on Linux via Wine. It exposes 37 tools for circuit simulation, waveform extraction, signal analysis, and design automation --- all accessible from Claude Code or any MCP client.

Setup at a glance

1. Install prerequisites

   You need Wine and an extracted copy of LTspice. Wine runs the LTspice binary in batch mode; no GUI required.

   Prerequisites details

2. Install mcltspice

   uvx mcltspice

   Or install from source with uv pip install -e . for development.

3. Add to your MCP client

   claude mcp add mcltspice -- uvx mcltspice

   Works with Claude Code out of the box. Other MCP clients use standard stdio transport.

   Claude Code setup details

4. Run your first simulation

   Create a circuit from a template, simulate it, and extract waveforms --- all through tool calls.

   First simulation walkthrough

What you can do

Once installed, mcltspice gives your MCP client the ability to:

Simulate circuits

Run .asc schematics and .cir netlists through LTspice. Sweep parameters, vary temperature, run Monte Carlo.

Analyze results

Extract waveforms, measure bandwidth, compute FFT and THD, analyze noise, check stability margins.

Edit and generate

Read and modify schematics, build netlists from scratch, generate circuits from templates, run design rule checks.

Browse the library

Search 6500+ component symbols, 4000+ example circuits, and SPICE model/subcircuit definitions.

Next steps

Prerequisites Set up Wine and LTspice on your system.

Claude Code Setup Configure mcltspice in Claude Code or other MCP clients.

First Simulation Walk through an end-to-end simulation workflow.