Turn STEP CAD files into AI-readable context packs: exact dimensions, holes, cutouts, fasteners, assembly relations, joints, weak spots and labelled images. Runs offline. Works with any AI chat, Claud
Give any LLM X-ray vision into your CAD model. stepscribe reads a STEP file and writes an LLM context pack: exact measurements, holes, patterns, standard parts, assembly relationships and labelled images, all computed deterministically and offline (no AI model, no network).
Download the 1-minute demo with sound (6 MB, MP4). No more screenshots and long explanations to get an AI to understand your model; the web page and the three Claude Code commands; made for beginner designers who want AI support.
You need Python 3.11 or newer. Check with python --version; get it from python.org if it is missing.
1. Install (one command, covers everything below):
Then check it with stepscribe --help. If your shell says the command is not found, close and reopen the terminal (pip puts it in your Python Scripts folder).
I want to... Do this ------ Click, not type (easiest) Run stepscribe ui. A page opens in your browser at http://127.0.0.1:8765: drop a STEP file on it, watch the progress and time estimate, read the results in tabs, answer the designer questions, download a zip. Only your own computer can reach it. Use it inside Claude Code Install the plugin (see below), then type /stepscribe-cad:export myrobot.step. Get files for any AI chat (ChatGPT, Gemini, Claude.ai...) Run stepscribe export myrobot.step, then paste the FULL.md, COMPACT.md or SMALL.md file into the chat, or upload the chatbundle folder. Script it stepscribe pack, analyze, render, section (see Quickstart).
From the project README.
Add the radar badge to your README — it shows your project was picked up by MCP Radar and links to this page:
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