# Opentdb

2 endpoints on Opentdb. Every one returns the same response shape and has a flat, published price in credits.

Category: [Fun & utilities](https://onekey.dev/docs/categories/utilities.md) · [Overview page](https://onekey.dev/platforms/opentdb)

## Endpoints

| Endpoint | What it does | Cost | Status |
| --- | --- | --- | --- |
| [`categories`](https://onekey.dev/docs/api/opentdb/categories.md) | Open Trivia DB categories. | 5 credits | stable |
| [`questions`](https://onekey.dev/docs/api/opentdb/questions.md) | Trivia questions (Open Trivia DB; limited to 1 call per 5 s per IP). | 5 credits | stable |

Every endpoint page has a **Field mapping** section showing which source field becomes which [unified field](https://onekey.dev/docs/schema.md) (fixed schema) or platform-specific `ext.` field.