Ryan Malloy
9b418a06c5
- SVG waveform plots (svg_plot.py): pure-SVG timeseries, Bode, spectrum
generation with plot_waveform MCP tool — no matplotlib dependency
- Circuit tuning tool (tune_circuit): single-shot simulate → measure →
compare targets → suggest adjustments workflow for iterative design
- 5 new circuit templates: Sallen-Key lowpass, boost converter,
instrumentation amplifier, current mirror, transimpedance amplifier
(both netlist and .asc schematic generators, 15 total templates)
- Fix all 6 prompts to return list[Message] per FastMCP 2.x spec
- Add ltspice://templates and ltspice://template/{name} resources
- Add troubleshoot_simulation prompt
- Integration tests for RC lowpass and non-inverting amp (2/4 pass;
CE amp and Colpitts oscillator have pre-existing schematic bugs)
- 360 unit tests passing, ruff clean
mcp-ltspice
MCP server for LTspice circuit simulation automation on Linux.
Features
- Run Simulations - Execute .asc schematics or .cir netlists in batch mode
- Extract Waveforms - Parse binary .raw files to get voltage/current data
- Modify Schematics - Programmatically edit component values
- Browse Libraries - Access 6500+ symbols and 4000+ example circuits
Requirements
- Linux with Wine installed
- LTspice extracted (see below)
- Python 3.11+
Installation
# From PyPI (once published)
uvx mcp-ltspice
# From source
uv pip install -e .
LTspice Setup
Extract LTspice from the Windows MSI installer:
# Download LTspice64.msi from analog.com
cd /path/to/downloads
7z x LTspice64.msi -oltspice
cd ltspice
7z x disk1.cab
# Set up Wine prefix
export WINEPREFIX=$PWD/.wine
export WINEARCH=win64
wineboot --init
Set the LTSPICE_DIR environment variable or use the default ~/claude/ltspice/extracted/ltspice.
MCP Tools
| Tool | Description |
|---|---|
simulate |
Run simulation on .asc schematic |
simulate_netlist |
Run simulation on .cir netlist |
get_waveform |
Extract signal data from .raw file |
read_schematic |
Parse schematic components and nets |
edit_component |
Modify component values |
list_symbols |
Browse component symbol library |
list_examples |
Browse example circuits |
get_symbol_info |
Get symbol pins and attributes |
check_installation |
Verify LTspice setup |
MCP Resources
ltspice://symbols- All available component symbolsltspice://examples- All example circuitsltspice://status- Installation status
Usage with Claude Code
claude mcp add mcp-ltspice -- uvx mcp-ltspice
Or for local development:
claude mcp add mcp-ltspice -- uv run --directory /path/to/mcp-ltspice mcp-ltspice
License
MIT