# Crossref API: 12 Endpoints for Scholarly Metadata — Anysite Blog

> Access Crossref's 155M+ DOI-registered scholarly works, journals, funders, and publishers via Anysite's REST API. No Crossref account required.

URL: https://anysite.io/blog/crossref-api-launch/
Canonical: https://anysite.io/blog/crossref-api-launch/
Language: en
Generated: 2026-10-01

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[Anysite Blog](https://anysite.io/blog/) June 25, 2026 · 2 min read

# Crossref API: 12 Endpoints for Scholarly Metadata

[New Sources](https://anysite.io/blog/tag/new-sources/) [Research Data](https://anysite.io/blog/tag/research-data/)

Anysite now exposes the [Crossref data API](https://anysite.io/endpoints/crossref/) — 12 structured endpoints for querying Crossref's index of 183.7 million DOI-registered scholarly works, the journals and publishers that produced them, and the funders that supported them.

## What is Crossref?

Crossref is a not-for-profit membership organization that maintains the world's largest database of scholarly metadata. Its 25,000+ member organizations — Elsevier, Wiley, Springer Nature, the ACM, the APA, and thousands of society publishers — deposit bibliographic records and DOIs into a shared, open index. The result is the most comprehensive, publisher-authoritative catalog of scholarly output in existence: over 183.7 million works spanning articles, books, datasets, conference papers, and preprints.

Crossref's own API is free but rate-limited, requires careful pagination, and returns deeply nested JSON that varies by work type. Anysite's integration resolves all 12 Crossref surfaces through a single authenticated endpoint — one key, consistent output structure, and predictable rate limits.

## The 12 endpoints

The new Crossref integration covers four data surfaces:

- **Works** — Look up any scholarly work by DOI (`/api/crossref/works`), or search the full 183.7M+ index by title, author, journal, date range, ORCID, funder, work type, and more (`/api/crossref/works/search`).
- **Journals** — Fetch journal metadata by ISSN (`/api/crossref/journals`), search journals by keyword (`/api/crossref/journals/search`), or list all works published in a journal (`/api/crossref/journals/works`).
- **Members (publishers)** — Look up publishers by Crossref member id (`/api/crossref/members`), search publishers by name (`/api/crossref/members/search`), or list all works deposited by a publisher (`/api/crossref/members/works`).
- **Funders** — Look up funders by Crossref Funder Registry id (`/api/crossref/funders`), search the funder registry by name (`/api/crossref/funders/search`), or list all works a funder has supported (`/api/crossref/funders/works`).
- **Prefixes** — Resolve any DOI prefix to its owning publisher and member id (`/api/crossref/prefixes`).

## What you can build

The combination of DOI lookup, full-text search, and graph traversal (works → journals → publishers → funders) unlocks several application patterns that are hard to support with the raw Crossref API:

- **Literature discovery pipelines** — search by topic, filter for works with abstracts and ORCID-verified authors, sort by publication date. Feed results into knowledge graphs or review tools without rate-limit gaps.
- **Citation impact dashboards** — each work lookup returns `is-referenced-by-count`. Track citation velocity by combining DOI lookup with deposit date filters on the search endpoint.
- **Funder portfolio analysis** — look up NSF or NIH in the Funder Registry, then pull all works they funded with grant numbers and award data. Map which journals or disciplines a funder supports.
- **Publisher intelligence** — search member publishers, resolve DOI prefixes to owning organizations, and enumerate a publisher's full deposit portfolio by member id.

## Quick example

```
# Resolve a DOI to full scholarly metadata
curl -X POST https://api.anysite.io/api/crossref/works \
  -H "access-token: YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{"doi": "10.1145/3292500.3330701"}'
```

The response includes the work's title, authors (with ORCIDs and affiliations), abstract, journal and publisher, all publication dates, citation count, funders with award numbers, license information, and a full structured reference list.

## Access

The Crossref endpoints are available on all Anysite plans — no separate Crossref account or API key required. Full endpoint reference and live examples are on the [Crossref endpoint page](https://anysite.io/endpoints/crossref/).