# Project Gutenberg on Onekey

> 4 endpoints for Project Gutenberg (4 stable, 0 beta), 1 to 5 credits each. Category: Knowledge & reference. One key, one JSON shape.

Base URL: https://api.onekey.dev
Auth: header `x-api-key: <key>`. Call shape: `GET /v1/{platform}/{endpoint}?{params}`.
Every response is `{success, data, metadata, error}`; check `success` first. Cost is in `metadata.credits_charged`. Free when served from cache (0.2 credit for a cached response over 100 KB). Failed and not-found calls are refunded.
Status: stable = verified against the live source; beta = not yet verified, fields may be missing.

Page: https://onekey.dev/platforms/gutenberg
Reference (Markdown): https://onekey.dev/docs/api/gutenberg.md
All docs: https://onekey.dev/llms.txt

## Canonical fields returned

Unified-schema fields (same names on every platform), with how many of the 4 mapped Project Gutenberg endpoints return each:

- `author.displayName` (string): 4
- `entity.id` (string): 4
- `entity.language` (string): 4
- `entity.name` (string): 4
- `entity.stats.downloads` (integer): 4
- `media.thumbnailUrl` (URL): 4
- `entity.description` (string): 1
- plus 1 platform-specific field under `ext.`

## Endpoints

### gutenberg.book

Project Gutenberg book by id.
- Price: 1 credit per fresh call. Status: stable. Returns: one record.
- Request: `GET https://api.onekey.dev/v1/gutenberg/book?id=1342` with header `x-api-key: YOUR_API_KEY`
- Parameters:
  - `id` (string, required): Gutenberg id
- Fields returned: `entity.id`, `entity.name`, `author.displayName`, `entity.language`, `entity.stats.downloads`, `media.thumbnailUrl`, `entity.description`, `ext.epubUrl`
- Reference: https://onekey.dev/docs/api/gutenberg/book.md

### gutenberg.language

Popular Project Gutenberg books in a language.
- Price: 5 credits per fresh call. Status: stable. Returns: a list.
- Request: `GET https://api.onekey.dev/v1/gutenberg/language?lang=fr` with header `x-api-key: YOUR_API_KEY`
- Parameters:
  - `lang` (string, required): 2-letter language code, e.g. fr
- Fields returned: `entity.id`, `entity.name`, `author.displayName`, `entity.language`, `entity.stats.downloads`, `media.thumbnailUrl`, `ext.epubUrl`
- Reference: https://onekey.dev/docs/api/gutenberg/language.md

### gutenberg.search

Search Project Gutenberg books (Gutendex).
- Price: 5 credits per fresh call. Status: stable. Returns: a list.
- Request: `GET https://api.onekey.dev/v1/gutenberg/search?q=dickens` with header `x-api-key: YOUR_API_KEY`
- Parameters:
  - `q` (string, required): Search query
- Fields returned: `entity.id`, `entity.name`, `author.displayName`, `entity.language`, `entity.stats.downloads`, `media.thumbnailUrl`, `ext.epubUrl`
- Reference: https://onekey.dev/docs/api/gutenberg/search.md

### gutenberg.topic

Project Gutenberg books by topic/bookshelf keyword.
- Price: 5 credits per fresh call. Status: stable. Returns: a list.
- Request: `GET https://api.onekey.dev/v1/gutenberg/topic?topic=children` with header `x-api-key: YOUR_API_KEY`
- Parameters:
  - `topic` (string, required): Topic keyword, e.g. children
- Fields returned: `entity.id`, `entity.name`, `author.displayName`, `entity.language`, `entity.stats.downloads`, `media.thumbnailUrl`, `ext.epubUrl`
- Reference: https://onekey.dev/docs/api/gutenberg/topic.md

## Sample request

```bash
curl "https://api.onekey.dev/v1/gutenberg/book?id=1342" \
  -H "x-api-key: YOUR_API_KEY"
```