# AG3D Lab Maker Data API
> JSON API for AI agents: Gridfinity reference dimensions, bin and drawer-fit calculators, AG3D Lab design catalog. Auth: Authorization: Bearer <key>. OpenAPI: /openapi.json
Base URL: https://ag3ddata.com (fallback: https://ag3d-data-api.pages.dev)
- GET /v1/gridfinity/spec
- GET /v1/gridfinity/bin?x=2&y=1&u=3
- GET /v1/gridfinity/fit?width=500&depth=380&height=70
- GET /v1/catalog
- GET /v1/usage
Values come from AG3D Lab CAD models. Gridfinity was created by Zack Freedman (Voidstar Lab), MIT License.