# Open Brick - LLM Quick Rules

Project:
- App: https://openbrick.cogan.dev/
- Repo: https://github.com/timcogan/open-brick
- Full LLM doc: https://openbrick.cogan.dev/llms-full.txt

Purpose:
- Generate shareable URLs for parametric brick STL configurations.

Canonical URL shapes:
- https://openbrick.cogan.dev/?template=classic_brick&width={X}&length={Y}&height={Z}&scale={SCALE}
- https://openbrick.cogan.dev/?template=classic_plate&width={X}&length={Y}&scale={SCALE}
- https://openbrick.cogan.dev/?template=classic_tile&width={X}&length={Y}&scale={SCALE}
- https://openbrick.cogan.dev/?template=mechanical_axle&l={L}&scale={SCALE}

Allowed ranges:
- classic_brick: width 1..10, length 1..12, height 1..9, scale 90..110
- classic_plate: width 1..16, length 1..16, scale 90..110
- classic_tile: width 1..16, length 1..16, scale 90..110
- mechanical_axle: l 1..16, scale 90..110

Rules:
- Clamp out-of-range numeric values to nearest valid value.
- `height` is valid for `classic_brick`.
- `l` is used for `mechanical_axle`.
- Query aliases accepted: `x` -> `width`, `y` -> `length`, `z` -> `height`.

Example:
- https://openbrick.cogan.dev/?template=classic_brick&width=4&length=2&height=3&scale=101
- https://openbrick.cogan.dev/?template=mechanical_axle&l=6&scale=100