# Gutenberg

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

Category: [Knowledge & reference](https://onekey.dev/docs/categories/knowledge.md) · [Overview page](https://onekey.dev/platforms/gutenberg)

## Endpoints

| Endpoint | What it does | Cost | Status |
| --- | --- | --- | --- |
| [`book`](https://onekey.dev/docs/api/gutenberg/book.md) | Project Gutenberg book by id. | 1 credit | stable |
| [`language`](https://onekey.dev/docs/api/gutenberg/language.md) | Popular Project Gutenberg books in a language. | 5 credits | stable |
| [`search`](https://onekey.dev/docs/api/gutenberg/search.md) | Search Project Gutenberg books (Gutendex). | 5 credits | stable |
| [`topic`](https://onekey.dev/docs/api/gutenberg/topic.md) | Project Gutenberg books by topic/bookshelf keyword. | 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.