a3d-text

Read exactly $AMAGINE3D_SKILL_DIR/SKILL.md once; never substitute a cwd or global namesake. Examples live in $AMAGINE3D_SKILL_DIR/examples/; references in $AMAGINE3D_RUNTIME_DIR/references/. On continuation/compaction use a3d agent context and its nextInspect/nextDesignRead; reuse known contracts until capabilityVersion changes. Keep editable designs or build123d BRep source and STEP masters in the workspace. Intent owns requirements; source owns controls. Unless tolerances/fits override them, exterior dimensions use nominal ±0.1 mm and checks 0.01 mm precision. Never relax QA targets.

<!-- a3d-workflow:v2 classify > functional-draft > feedback > contract > compile > evidence-repair -->

Draft and review

Prefer DSL, including for enclosures; name unsupported geometry/binding before Python fallback. Batch only needed contracts: a3d agent capabilities '{"designOps":["open_box","hole"]}' (Python: symbols). Results page by output size. Follow page.nextRequest with a3d agent inspect; do not preload contracts or references. Starter: configurable cube; full: $AMAGINE3D_SKILL_DIR/examples/open_box.a3d.json; edit: $AMAGINE3D_RUNTIME_DIR/references/parametric-design.md:

Use useful independent controls with bilingual labels/ranges, shared IDs for related geometry, and expressions for derived dimensions. Preserve frozen intent/QA; a range is not a manufacturing guarantee.

{"action":"apply","design":"model.a3d.json","baseRevision":null,"changes":[{"kind":"add","target":"params.size","value":{"type":"length","value":80,"range":[50,100],"label":{"en":"Overall size","zh":"整体尺寸"}}},{"kind":"add","target":"params.wall","value":{"type":"length","value":2,"range":[1,4],"label":{"en":"Wall thickness","zh":"壁厚"}}},{"kind":"add","target":"parts.body","value":{"result":"@body.shell"}},{"kind":"add","target":"body.shell","value":{"op":"open_box","size":["=size","=size","=size"],"wall":"=wall","floor":"=wall"}}]}