Zotero
Scholarly No key
AuthenticationNo key
Rate limitNo published quota; use reasonable pacing.
Documentation: www.zotero.org ยท Checked Sep 13, 2026
About
Zotero is the free, open-source reference manager used by millions of researchers. Its web API lets you read public group libraries with no key, and a free personal API key unlocks your private library for reading and writing. You can pull items, collections, tags, and formatted bibliographies, or add new references programmatically.
Details
No key needed. You can call it right away.
Auth: No key
Rate limit: No published quota; use reasonable pacing.
Verified: 2026-09-13
Best for: personal developer
Setup
- For public group libraries, just paste the API URL pattern into your browser, no signup needed.
- For your own library, create a free Zotero account and make a key at the settings page.
- Find your user ID on the same page and put it in the URL.
- Send your key in the Zotero-API-Key header for private libraries and write operations.
Example
https://api.zotero.org/users/USER_ID/items?q=DarwinUse cases
- Generate a formatted bibliography from your Zotero library on a website
- Sync references between Zotero and your own research dashboard
- Search a shared public group library for sources on a topic