CutOptim Engine

Metered: one Engine API call. Cut rectangular parts from sheets (panels, plywood, glass, sheet metal) and get the layout, cut plan and yield. 2D panel optimization. Nest rectangular parts into rectangular sheets. Returns the placement of every part, the remaining offcuts, the guillotine cut plan and the yield metrics. Parts named in `matchedSets` (grain matching) are cut side by side from one piece of board, one kerf apart; each placed member says which set and position it is.

Metered: one Engine API call. Cut lengths from bars, tubes, profiles or rolls and get the cutting pattern per bar. 1D / linear optimization (bars, profiles, tube). Cut parts of a given length from stock bars. Returns the rods used, the position of every part along each rod, the leftover length and the yield metrics.

Metered: one Engine API call. Cut timber parts grouped by cross-section from matching stock lengths. Timber optimization (cross-section-aware 1D). Cut lengths from bars that have a CROSS-SECTION. Unlike `/v1/optimize/1d`, where every bar can serve every part, a 50×150 part can only come out of 50×150 stock — so the job is split by cross-section, each section is matched to its own stock and solved separately, and the response carries both per-section and job-wide totals. Fanning the same job out into several `/v1/optimize/1d` calls is not equivalent: it costs one call per section against your quota, moves the stock matching to your code, and cannot distinguish "no material of this section" from "did not fit" — which this endpoint reports separately as `unmatched` and `unplaced`. `sw` and `sh` may be given in either order: 50×100 and 100×50 are the same bar turned over and are matched as one section. The response reports the normalised short/long form.

Metered: one Engine API call (needs an API key; not available with the demo key). Nest free-form polygon parts on sheets. True-shape (irregular / polygon) nesting. Pack ARBITRARY POLYGONS onto fixed sheets, letting parts interlock into each other's concave pockets — an L-bracket, a gasket, a laser-cut profile. This is a different class from the rectangular modes: a part is an outline (`polygon`, optional interior `holes`), not a width×height, so a bounding-box packer's notch-air is reclaimed. On a representative 272-part job it uses 6 sheets where the same parts by bounding box need 9 (−33 % material). Two things the rectangular API cannot express come for free here: per-sheet EXCLUSION ZONES (`stock[].exclusions` — a defect, a clamp footprint, a pre-printed area; a `quality`-0 zone is a no-go region for any part), and true-shape holes. Material partition (`material`) and the opaque `meta` passthrough work exactly as on the other modes. ⚠️ `density` is the placed POLYGON area over used sheet area — the honest fill, with concave pockets counted as empty. It is NOT comparable to a rectangular packer's `yieldPct` (which counts each bounding box as solid and so reads higher for a worse result); the cross-comparable metric is `sheetCount` on the same parts. A placed part carries the rigid transform (`rotation` in degrees, then `x`/`y` translation), NOT a re-emitted polygon: your input outline plus that transform reconstructs the placement exactly. Deterministic (a pinned seed); set `options.seed` to reproduce a layout. Engines: `lbf` (default) is synchronous and instant. Besides its own pass it tries the parts restricted to the right angles they allow, and their bounding boxes packed by an exact rectangle packer — which finds grids a sampling search misses (three 500-wide parts on a 1500-wide sheet at zero spacing) — and keeps whichever ranks best; on a tie, the plan that fills its sheets front to back, then the one with fewer parts off the right angles. `max` is ASY

Free, no key needed: checks a 2D request without solving it. Same arguments as optimize_2d (field descriptions there). Validate a 2D request — free, no key, no quota, no solve. Schema-validate the SAME body `/v1/optimize/2d` takes, WITHOUT solving or spending a call. 200 `{valid:true, warnings}` (warnings flag parts that fit no stock — an approximate, solve-free probe), or 400 with the exact bad field path. Open like `/v1/health`: validate payloads during integration before you even have a key. The engine verdict matches the optimize path exactly, `engine: "max"` included: a body this endpoint accepts is one `/v1/optimize/2d` will accept, and one it refuses (400 for an option the max tier cannot model, 503 where that tier is not enabled) is refused there too.

Free, no key needed: checks a 1D request without solving it. Same arguments as optimize_1d (field descriptions there). Validate a 1D request — free, no key, no quota, no solve. Schema-validate the SAME body `/v1/optimize/1d` takes, WITHOUT solving or spending a call. See `/v1/validate/2d`.

Free, no key needed: checks a timber request without solving it. Same arguments as optimize_wood (field descriptions there). Validate a wood request — free, no key, no quota, no solve. Schema-validate the SAME body `/v1/optimize/wood` takes, WITHOUT solving or spending a call. Warnings flag parts with no matching-section stock long enough. See `/v1/validate/2d`.

Free, no key needed: checks a nesting request without solving it. Same arguments as optimize_nest (field descriptions there). Validate a nest request — free, no key, no quota, no solve. Schema-validate the SAME body `/v1/optimize/nest` takes, WITHOUT solving or spending a call. Reports `engineEnabled` (whether the nesting engine is built into this deployment) and warns about parts whose bounding box fits no stock sheet. For `engine: "max"` the verdict matches the optimize path exactly: 400 for anything outside the preview scope, 503 where the async tier is not enabled, and otherwise a warning that the job will be asynchronous. See `/v1/validate/2d`.

Free (needs the key that submitted the job). Reads an engine "max" job; when it succeeded, the plan is in result. Poll an async max-engine job. Fetch the status (and, when finished, the plan) of a job submitted with `engine: "max"`. A job is `queued`, then `running`, then `succeeded` (with `result` = the same response shape a synchronous solve of that `mode` returns, carrying `engine: "max"` — a 2D plan for `mode: "2d"`, a nest for `mode: "nest"`) or `failed` (with `error`). Polling spends no quota, but the key must still be usable: a revoked key or a lapsed API subscription is refused with 403 here exactly as it is on every other authenticated path. A caller sees only its own jobs — a job id belonging to another account is reported as 401 "job not found", indistinguishable from one that does not exist, so ids cannot be probed.

Free (needs an API key). Shows the plan, the calls used and left this month, and when the period ends. The account's current-month usage and quota. Read-only. Does not consume quota and does not send rate-limit headers. The period is the UTC calendar month.

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