# AI Questions

> AI Questions is an AI-powered exam platform from Intrazero that turns any document into high-quality exam questions, auto-grades handwritten paper exams, marks essays against rubrics, and scans bubble sheets — all via a single REST API. It is a core module of the iTest Educational Assessment Platform, with a Moodle plugin delivered in collaboration with PanWorld Education. Over 13,000 questions generated to date.

## Quick facts

- Vendor: Intrazero (https://intrazero.com)
- Parent product: iTest — Educational Assessment Platform (https://www.intrazero.com/en/product-details/itest-educational-assessment-platform)
- Live host: https://aiquestions.intrazero.com
- API base: https://aiquestions.intrazero.com/api/v1
- API spec: https://aiquestions.intrazero.com/openapi.yaml (OpenAPI 3)
- Languages supported (content): English, Arabic, German
- Auth: Bearer API key per Entity (issued by Intrazero)
- All grading endpoints are async (return HTTP 202 + `job_id`; poll or webhook)

## Core capabilities

1. **Question generation** — Upload PDF / DOCX / PPTX / TXT and receive structured exam questions. 15 question types supported: multiple choice, true/false, short answer, essay, fill-in-the-blank, matching, ordering, code, math, diagram labelling, scenario-based, case study, drag-and-drop, hotspot, drawing/diagram. Configurable: number of questions, difficulty, language, subject, Bloom's level.
2. **Auto-grading (paper exams)** — Upload a scanned PDF of handwritten student answers + an answer key. Returns per-question score, confidence, structured analysis (correctness reason, handwriting quality, partial credit hints), and a crop image of each answer for review.
3. **Essay marking** — Upload essays (typed text or scanned files) plus a rubric. Returns per-criterion score with evidence quotes and feedback, plus overall feedback at brief / detailed / revision-suggestion depth.
4. **Bubble sheet (OMR)** — Upload scanned bubble sheets (single-student or multi-student PDFs). Reads QR-encoded student identity, detects filled bubbles, grades against the answer key, flags ambiguous bubbles for manual review.

## Pages

- [Home](https://aiquestions.intrazero.com/): Overview, features, contact.
- [Question Generation](https://aiquestions.intrazero.com/features/question-generation): How AI question generation works, supported types and formats.
- [Auto-Grading](https://aiquestions.intrazero.com/features/auto-grading): Grading scanned handwritten paper exams against an answer key.
- [Essay Marking](https://aiquestions.intrazero.com/features/essay-marking): Rubric-based AI essay scoring with criterion feedback.
- [Bubble Sheet Marking](https://aiquestions.intrazero.com/features/bubble-sheet-marking): OMR for multichoice bubble sheets with QR-encoded identity.
- [API Reference](https://aiquestions.intrazero.com/docs/api): Interactive Swagger UI for the REST API.
- [OpenAPI spec](https://aiquestions.intrazero.com/openapi.yaml): Machine-readable OpenAPI 3 definition.
- [Full LLM context](https://aiquestions.intrazero.com/llms-full.txt): Expanded reference for AI agents.

## Optional

- [iTest platform](https://www.intrazero.com/en/product-details/itest-educational-assessment-platform): Parent assessment platform.
- [Intrazero contact](https://www.intrazero.com/en/contact): Sales, partnerships and integration enquiries.