What problem does it solve? When asked to build a CAD part from a reference image, agents often skim the image and misread features (boss vs pocket, complex outlines vs rounded rectangles), causing long, wasteful iteration loops. This Skill enforces a rigorous zoom-and-describe pass that produces a reviewable feature tree before any geometry is created. ## Core Features & Use Cases - Structured Feature Tree Output: Produces a fixed-format decomposition with overview, envelope dimensions, per-feature type/size/position/role, relationships, and explicit uncertainties. - Guided Crop-and-Describe Workflow: Uses load_local_image and crop_image to zoom into each feature and dimension callout at native resolution, reading values like Ø25, R3, and 4X patterns directly from drawings. - User Confirmation Gate: Pauses after decomposition so the user can correct misread features before the build phase begins. - Use Case: A user shares a photo of a motor bracket drawing and asks to model it. The Skill crops into each callout and feature region, then outputs a feature tree (base plate, 4-hole bolt pattern, central boss, fillets) the user confirms before Onshape building starts. ## Quick Start Analyze this engineering drawing image and produce a structured feature decomposition before building the part in Onshape.
