API reference documentation for AnchorGrid's Construction Intelligence API, specifically covering the door detection endpoint (`POST /v1/drawings/detection/doors`). The endpoint accepts architectural floor-plan PDFs via a previously uploaded document_id, enqueues an inference job on GPU infrastructure, and returns bounding-box detections in PDF coordinate space. Free-tier jobs complete in 2–4 minutes; Pro/Enterprise plans use dedicated GPUs for faster processing. Credits are charged per page submitted, results are post-filtered by a geometry and median-area pipeline, and polling `GET /v1/jobs/{job_id}` is required to retrieve completed results.
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