Unpaywall API
Academic & ResearchAccess Unpaywall public data through one AllAPI key — 6 endpoints across the Unpaywall surface. No Unpaywall account, no credentials, no scraping stack — one anonymous request returns real data or a documented honest error, never fabricated.
| Method | Endpoint | Operation |
|---|---|---|
| POST | /api/unpaywall/batch_merge | Batch merge |
| POST | /api/unpaywall/changefiles | Changefiles |
| POST | /api/unpaywall/doi | Doi |
| POST | /api/unpaywall/doi_enriched | Doi enriched |
| POST | /api/unpaywall/oa | Oa |
| POST | /api/unpaywall/search | Search |
Call the Unpaywall API in one line
Free tier — 200 credits/month, no card. One key works across all 468 platforms, 39 MCP tools and 48 composites.
Get your free key → API reference