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research.halowerk.com v1 paper-search
https://research.halowerk.com/v1/paper-search
answers 402
Searches OpenAlex and Crossref for publications and returns each with its DOI, authors and their affiliations, publication year, venue, abstract, citation count and, where one exists, a direct link to a legally free full text with the licence it is offered under. OpenAlex stores abstracts as an inverted word index rather than text; it is reconstructed here, because the raw structure is unusable. R
We sent a real
POST request to this endpoint and it
answered 402 with payment requirements we could parse.
- Price
- $0.005
- Network
- base
- Pay to
- 0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E
- Spec dialect
- v2 (declares x402Version 2)
- Transport
- PAYMENT-REQUIRED header
- HTTP method
- POST
- Response latency
- 154 ms
- Payment options
- 1 usable of 1
- Last checked
- 2026-09-06T01:23:47.019Z (28d ago)
- Category
- search
Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fresearch.halowerk.com%2Fv1%2Fpaper-search"