> For the complete documentation index, see [llms.txt](https://doc.duaer.com/zh/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://doc.duaer.com/zh/getting-started/open-library.md).

# 在 Duaer 里查 Open Library 图书

在 Duaer 里：按书名、作者或主题检索 Open Library 图书：作者、首版年份、版本数、ISBN、主题、电子书可读性与封面。一次成功查询用 1 额度。
## 能拿到什么

Duaer 数据市场里的「Open Library 图书」：按书名、作者或主题检索 Open Library 图书：作者、首版年份、版本数、ISBN、主题、电子书可读性与封面。查到结果时用 1 额度，结果交给数字组织的下一个节点。

从节点创建器选 Duaer 数据 → Open Library 图书，或打开 [数据市场](/zh/getting-started/data-market.md)。相关：[papers](/zh/getting-started/papers.md)、[维基百科](/zh/getting-started/wikipedia.md)。

## 适合做什么

- 整理书单或核对图书引用。
- 按主题查找教材与经典著作。

## 在画布里检索

1. 打开节点创建器，选 Duaer 数据 → Open Library。
2. 至少填一项：Words（书名或关键词）、Author、Subject。
3. Limit 默认 10，最大 20。执行。

查到结果才扣 1 额度；没有结果、输入有误或上游失败都不扣。

## 用 API 调用

- GET https://api.duaer.com/v1/data/open-library?words=molecular%20biology%20of%20the%20cell
- Authorization: Bearer <Duaer key>

下方是与数据市场「复制技能」相同的英文技能，含参数、示例与返回字段。

## 调用技能（英文）

与数据市场「复制技能」一致。

```
---
name: duaer-open-library
description: >-
  Duaer Open Library. Books from Open Library by title, author, or subject: authors, first publication year, edition count, ISBN, subjects, e-book access, and cover image.
  One successful search uses 1 Duaer credit.
---

# Duaer Open Library

Duaer Open Library searches the Internet Archive book catalog. Each row is a work that groups its editions, with a cover link when one exists.

## When to use

- Build a reading list or check a book citation.
- Find textbooks and classics on a subject.

## When not to use

- Journal articles. Use https://skills.duaer.com/papers.md.
- Prices and stock. Open Library is a catalog, not a shop.

## Call

`GET https://api.duaer.com/v1/data/open-library?words=molecular%20biology%20of%20the%20cell`

Header: `Authorization: Bearer <Duaer key>`

Use an account key or a model API key.

Get a Duaer key: https://skills.duaer.com/keys.md

## Parameters

Provide at least one of `words`, `author`, or `subject`.

- `words` — Title or any words, such as molecular biology of the cell.
- `author` — Optional. Author name, such as Alberts.
- `subject` — Optional. Subject heading, such as genetics.
- `limit` — Optional. Rows to return, from 1 to 20. Default 10.

## Examples

- `GET https://api.duaer.com/v1/data/open-library?words=molecular%20biology%20of%20the%20cell` — find a textbook.
- `GET https://api.duaer.com/v1/data/open-library?author=Ursula%20K.%20Le%20Guin&limit=20` — works by an author.
- `GET https://api.duaer.com/v1/data/open-library?subject=machine%20learning` — books on a subject.

## Result

The response is `{ "items": [...] }`. Each item has `source`, `title`, `url`, and `summary`, plus:

- `workKey` — Open Library work key.
- `authors`, `firstPublished`, `editions` — authors, first year, and edition count.
- `isbn`, `publisher`, `languages` — one ISBN, a publisher, and languages.
- `subjects` — subject headings.
- `ebookAccess`, `coverUrl` — borrowable, public, or no e-book; cover image.

Fields without a value are left out.

## Credits

A search that returns at least one row uses 1 credit.
An empty search, a search that finds nothing, or a failed search uses 0.
Wrong input returns 400 with a message and uses 0.
No remaining credits returns 402 and does not search.
A missing key returns 401.

## Related

- https://skills.duaer.com/papers.md
- https://skills.duaer.com/wikipedia.md — Duaer Wikipedia

```
## Questions

### Duaer 的Open Library 图书检索扣多少额度？

查到结果时扣 1 额度；没有结果或出错不扣。

### Duaer Open Library 能看出书是否免费可读吗？

部分可以。Duaer 返回 ebookAccess：public 表示免费，borrowable 表示登录 Open Library 后可借阅。

## 相关

- [在 Duaer 里检索论文](https://doc.duaer.com/zh/getting-started/papers.md)
- [在 Duaer 里查维基百科](https://doc.duaer.com/zh/getting-started/wikipedia.md)