# Crossref API

Find scholarly metadata, DOI records, publication dates, and journal information.

- Canonical guide: https://findpublicapis.com/apis/crossref/
- Category: Science
- Authentication: No key
- Access: Free access
- Documentation reviewed: 2026-09-16 (not live uptime testing)
- Official documentation: https://www.crossref.org/documentation/retrieve-metadata/rest-api/

## What you could build
Create a research bibliography finder that links speech-synthesis papers to their DOIs.

## Usage conditions
No signup is needed for public metadata reads. Identify your app and use the polite pool for regular requests. Metadata completeness varies; abstracts may be copyrighted, and records do not imply access to full papers.

## Example endpoint
https://api.crossref.org/works?query=bulgarian%20speech%20synthesis&rows=5

Browser requests require provider CORS support. Confirm current access, pricing, and usage rights with the provider.