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# itasca-mcp
[English](https://github.com/yusong652/itasca-mcp/blob/main/README.md) | [简体中文](https://github.com/yusong652/itasca-mcp/blob/main/README.zh-CN.md)
[](https://pypi.org/project/itasca-mcp/)
[](https://pepy.tech/project/itasca-mcp)
[](https://github.com/yusong652/itasca-mcp/stargazers)
[](LICENSE)
[](https://www.python.org/)
`itasca>model new ;now, with LLM.`
**itasca-mcp** connects AI agents to [ITASCA](https://www.itascacg.com/)'s geomechanics simulation software — PFC, FLAC, 3DEC, MPoint, and MassFlow — through the [Model Context Protocol](https://modelcontextprotocol.io/). 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"*
- *"What's different about the `zone` commands between FLAC 7.0 and 9.0?"*
## 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](https://docs.astral.sh/uv/getting-started/installation/)** 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:
```text
Fetch and follow this bootstrap guide end-to-end:
https://raw.githubusercontent.com/yusong652/itasca-mcp/main/docs/agentic/itasca-mcp-bootstrap.md
```
### Manual Setup
**1. Register the MCP server** with your agent.
Most agents register it with a single command:
```bash
# Claude Code
claude mcp add itasca-mcp -- uvx itasca-mcp
# Codex / Codex-cli
codex mcp add itasca-mcp -- uvx itasca-mcp
# Gemini CLI
gemini mcp add itasca-mcp uvx itasca-mcp
```
Or fill in the MCP config file manually:
```json
{
"mcpServers": {
"itasca-mcp": {
"command": "uvx",
"args": ["itasca-mcp"]
}
}
}
```
**2. Start the bridge from inside the ITASCA engine:**
Download [`addon.py`](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
<img src="https://raw.githubusercontent.com/yusong652/itasca-mcp/assets/addon.gif" alt="addon.py demo" width="60%">
### 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:
```python
import itasca_mcp_bridge
itasca_mcp_bridge.start()
```
`start()` checks PyPI for a newer bridge release and self-upgrades before starting. The MCP client config persists.
## Features
- **Multi-engine corpus** - command, Python API, and reference docs for PFC, FLAC, 3DEC, MPoint, and MassFlow, selected via the required `software` parameter
- **Multi-version support** - command docs across engine versions (PFC: 6.0/7.0/9.0, FLAC: 7.0/9.0, 3DEC: 7.0/9.0) via the `version` parameter
- **Hierarchical documentation browsing** - agents navigate the engine command tree to discover capabilities and boundaries, reducing hallucinated commands
- **Enhanced plot documentation** - plot items reference docs supplementing the official documentation
- **Live REPL alongside running tasks** - execute code while a simulation is running: check model state and intermediate results without stopping the task; also useful for quick iteration before writing a full script
- **Task lifecycle management** - submit long-running simulations, monitor progress, interrupt running tasks, and browse task history
- **Multi-client compatible** - works with Claude Code, Codex CLI, Gemini CLI, GitHub Copilot CLI, OpenCode, toyoura-nagisa, and other MCP clients
## Troubleshooting
See [Troubleshooting](docs/agentic/itasca-mcp-bootstrap.md#troubleshooting) in the bootstrap guide.
## Development
See [Developer Guide: Install and Run from Source](docs/development/source-install.md).
<a href="https://glama.ai/mcp/servers/yusong652/itasca-mcp">
<img width="200" height="105" src="https://glama.ai/mcp/servers/yusong652/itasca-mcp/badge" alt="itasca-mcp MCP server" />
</a>
## Contributing
PRs and issues are welcome! See the [Developer Guide](docs/development/source-install.md) to get started.
## License
MIT - see [LICENSE](LICENSE).
<!-- mcp-name: io.github.yusong652/itasca-mcp -->
