OPERATIONS

Platform status and supported formats

What is live on fourechelon.com today: hosted CAD conversion, cad_scene Rowe inference, live Stripe billing, and the public Responses API. SolidWorks native files are intentionally rejected until a supported export path is used.

Live capabilities

STEP / STPLive

Preferred 3D CAD input via /api/v1/cad/extract or Four Cad.

IGES / IGSLive

3D solids and surfaces through the hosted converter.

DXF / PDF / SVGLive

2D drawings with entities, dimensions, and annotations.

SolidWorks (.sldprt/.sldasm)Not supported

Export as STEP and upload the .step file (HTTP 415 otherwise).

cad_scene tasksLive

understand, compare, optimize, and related Rowe tasks on structured CAD.

point_cloud_sceneLive

Legacy and sampled-geometry workflows.

Live billingLive

Base monthly API access plus metered input/output spatial tokens. See /pricing for current rates.

Partner feature treesPartner API

POST /api/v1/cad/import-feature-tree for Adam/Onshape-style payloads.