{"service":"SchoolIO AI Engine","version":"3.0.0-okf","docs":"/docs","knowledge_format":"Open Knowledge Format (OKF) v0.1 — https://github.com/GoogleCloudPlatform/knowledge-catalog","flow":{"step_1":"Abhishek pushes PDF → POST /api/pdf/ingest-url OR POST /api/pdf/ingest-file","step_2":"Poll GET /api/pdf/status/{book_id} until ready=true","step_3":"We chunk + embed (pgvector) AND build an OKF markdown bundle","step_4":"Raw PDF auto-deletes after 24h — embeddings + OKF bundle are permanent","step_5":"POST /api/exam/generate with book_id → returns exam JSON"},"endpoints":{"push_pdf_url":"POST /api/pdf/ingest-url","push_pdf_file":"POST /api/pdf/ingest-file","pdf_status":"GET  /api/pdf/status/{book_id}","pdf_list":"GET  /api/pdf/list","okf_bundle":"GET  /api/pdf/{book_id}/okf","generate_exam":"POST /api/exam/generate","get_exam":"GET  /api/exam/{exam_id}","list_exams":"GET  /api/exam/list/all","school":"GET  /api/school/{school_id}"}}