RocketSmith

Let agents design, simulate, and build your rocket.

RocketSmith is an end-to-end model-rocket toolchain exposed as an MCP extension. It orchestrates OpenRocket (flight simulation), build123d (parametric CAD), and PrusaSlicer (FDM slicing) behind a single agent, and closes the loop by feeding real printed-part weights back into the simulation for post-build stability verification.

Install

Claude Code (plugin)

claude plugin install ppak10/RocketSmith

Registers the MCP server, agents, and skills automatically. Start a session in your project directory:

Use rocketsmith to design and build a stable rocket for a D12 motor

The agent calls rocketsmith_setup automatically, which starts the GUI server and opens the dashboard in your browser.

Gemini CLI (extension)

gemini extensions install https://github.com/ppak10/RocketSmith

Then in a session:

@rocketsmith design and build a stable rocket for a D12 motor

Requirements

• Java runtime — required by OpenRocket
• OpenRocket 23.09 — uses orhelper, which targets the net.sf.openrocket package in OpenRocket 23.09 and earlier. OpenRocket 24+ is not supported.
• PrusaSlicer (optional — needed for the full CAD → print → mass calibration loop)

See Installation for platform-specific setup and troubleshooting.

Documentation

• Home — pipeline overview, domain agents, MCP tool list
• GUI — dashboard, offline mode, navigation, Agent Feed
• OpenRocket — component tree, stability, dimension models
• Manufacturing — DFAM rules, component tree annotations
• CADSmith — script execution, part extraction, preview pipeline, assembly
• Skills — stability analysis, motor selection, print preparation, mass calibration
• Installation — setup and dependency troubleshooting
• Hooks — Gemini CLI session hooks

Development

Local setup

git clone https://github.com/ppak10/RocketSmith
cd RocketSmith
uv sync

Claude Code

claude --plugin-dir .

Gemini CLI

gemini extensions install .

Building the GUI

The React/TypeScript frontend must be built before changes are reflected in production mode. The built files (src/rocketsmith/data/gui/) are committed to the repo so end users don't need to build them.

cd src/rocketsmith/gui/web
npm install
npm run build

License

See LICENSE.