THE DECISION

Source route

# Crossref REST API ## What It Contains Crossref REST API is a publisher-operated data service that provides scholarly publication metadata, dois and references. It supports reproducible research and operational analysis when callers use its documented API, preserve provenance, and respect the publisher's current terms and rate limits. Use bounded queries and retain the relevant identifiers, timestamps, and source URL. Results should be interpreted with the source metadata and limitations rather than treated as a substitute for professional, medical, legal, or safety advice. ## Search With Codex ```text Use Crossref REST API only through https://api.crossref.org/. Inspect the official documentation before writing a small Python query for a bounded research question. Respect pagination, rate limits, and error responses; return the documented fields in JSON with the source URL and retrieval timestamp. Do not scrape an unofficial site or invent an endpoint. ``` ## Python Starter Script ```python import json from urllib.request import Request, urlopen url = "https://api.crossref.org/works?query=climate&rows=1" # Replace with an authorised, documented query. request = Request(url, headers={"User-Agent": "byebuy.ai research (contact: you@example.com)", "Accept": "application/json"}) with urlopen(request, timeout=20) as response: if response.status != 200: raise RuntimeError(f"Unexpected HTTP status: {response.status}") payload = json.load(response) print(json.dumps(payload, indent=2)[:2000]) ``` ## Example Searches - What is the most recent official record for a bounded query? - Which available fields support a reproducible dashboard? - What metadata and retrieval date should accompany an export? ## What You Could Build - A provenance-aware research dashboard using permitted results. - A scheduled alert that records source updates rather than redistributing raw data. - A data-enrichment workflow that preserves the publisher's terms. ## Access and Rights Connect: API + REST. Rights code: M. No API key is required for the documented public route. Follow the official terms and source-specific notices. ## Geography Details Primary coverage is Global; use the publisher's metadata for detailed scope. ## Related Databases - Relationships will be added only after targets are independently verified within Query It. ## Sources - [https://www.crossref.org/documentation/retrieve-metadata/rest-api/](https://www.crossref.org/documentation/retrieve-metadata/rest-api/) - [https://api.crossref.org/](https://api.crossref.org/) ## FAQ - **Is this an official route?** Yes; use the linked publisher documentation. - **Can I redistribute results?** Check the linked rights evidence and source-specific terms. - **Does it need credentials?** See Access and Rights. - **Should I scrape the website?** No; use the documented route. - **How current is it?** Check source metadata and the verification date.

THE USEFUL CORE

What you can query

• Crossref REST API What It Contains Crossref REST API is a publisher-operated data service that provides scholarly publication metadata, dois and references.
• It supports reproducible research and operational analysis when callers use its documented API, preserve provenance, and respect the publisher's current terms and rate limits.
• Use bounded queries and retain the relevant identifiers, timestamps, and source URL.
• Results should be interpreted with the source metadata and limitations rather than treated as a substitute for professional, medical, legal, or safety advice.
• Search With Codex text Use Crossref REST API only through https://api.crossref.org/.

WHAT TO VERIFY BEFORE USE

What to verify before use

Confirm the source licence, access rules, update cadence, documentation, and whether the data is complete enough for the decision you need to make.