Crossref API — scholarly papers & DOI metadata (no key)
Pricing
from $2.00 / 1,000 crossref queries
Search 150M+ scholarly works (papers, chapters, proceedings) by query, author, year and type; look up any DOI; and search journals. Official Crossref data. Clean HTTP API + MCP, no key. Pay per query.
You can access the Crossref API — scholarly papers & DOI metadata (no key) programmatically from your own applications by using the Apify API. You can also choose the language preference from below. To use the Apify API, you’ll need an Apify account and your API token, found in API & Integrations in Apify Console.
$echo '{< "query": "attention is all you need"<}' |<apify call synthetic.ia/crossref-scholar-api --silent --output-datasetThe Apify CLI is the official tool that allows you to use Crossref API — scholarly papers & DOI metadata (no key) locally, providing convenience functions and automatic retries on errors.
Using installation script (macOS/Linux):
$curl -fsSL https://apify.com/install-cli.sh | bashUsing installation script (Windows):
$irm https://apify.com/install-cli.ps1 | iexUsing Homebrew:
$brew install apify-cliUsing npm:
$npm install -g apify-cliOther API clients include: