yusong652/pfc-mcp

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itasca>model new ;now, with LLM.
**itasca-mcp** connects AI agents to ITASCA's geomechanics simulation software — PFC, FLAC, 3DEC, MPoint, and MassFlow — through the Model Context Protocol. Browse documentation, run simulations, and execute code, all through natural conversation.
itasca>model solve ;LLM solves.
Tools (10)
**5 documentation tools** — browse and search the selected engine's commands, Python API, and reference docs. No bridge required.
**5 execution tools** — interactive REPL, task submission, progress monitoring, interruption, and history. Requires bridge.
Example Prompts
- *"Run a biaxial compression test on a dense specimen and plot the stress–strain curve"*
- *"Build a slope model in FLAC3D and find the factor of safety"*
- *"Model a tunnel excavation in jointed rock with 3DEC and check block displacements around the opening"*
- *"Simulate a landslide runout with MPoint and report the final deposit profile"*
- *"The simulation is still running, check the current unbalanced force without stopping it"*
- *"Look up the plot commands in the docs, then plot the contact force chains of the current model"*
- *"The command I just typed in the console doesn't seem right, take a look"*
First-time Setup
Prerequisites
- **An ITASCA engine installed** — PFC, FLAC, 3DEC, MPoint, or MassFlow. 9.0+ recommended; PFC 6.0 / 7.0, FLAC 7.0, and 3DEC 7.0 are also supported.
- **uv** installed (for uvx)
- **An AI agent** — Claude Code, Codex CLI, Gemini CLI, or any MCP-capable client
Agentic Setup (Recommended)
Copy this to your AI agent and let it self-configure:
Manual Setup
**1. Register the MCP server** with your agent.
Most agents register it with a single command:
Or fill in the MCP config file manually:
**2. Start the bridge from inside the ITASCA engine:**
Download addon.py, then use either of these two flows inside the engine GUI (PFC, FLAC, 3DEC, ...):
- Copy the file contents into the engine's IPython console and run them
- Or download the file and execute it in the engine GUI
Verify
Restart your AI agent and ask it to call itasca_execute_code to verify the connection.
Daily Startup
Once first-time setup is done, each new engine session only needs the bridge re-started — run this in the engine's IPython console and you're back online:
start() checks PyPI for a newer bridge release and self-upgrades before starting. The MCP client config persists.
Features
- **Multi-engine, multi-version corpus** - command, Python API, and reference docs for PFC, FLAC, 3DEC, MPoint, and MassFlow across engine versions (PFC: 6.0/7.0/9.0, FLAC: 7.0/9.0, 3DEC: 7.0/9.0), selected via the software and version parameters
- **Documentation agents can navigate** - agents browse the engine command tree to discover capabilities and boundaries, reducing hallucinated commands, with plot item reference docs supplementing the official documentation