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api.kadec0.xyz v1 lit-review
https://api.kadec0.xyz/v1/lit-review
answers 402
Literature review map in one call. Give a seed paper (DOI, arXiv id, OpenAlex id, or PMID) or a topic query and get one structured result: the seed's references, its cited-by list (most-cited first), and semantically related work, deduplicated into one uniform table with title, authors, year, venue, DOI, and citation count. Collapses search, citation lookup, and related-paper discovery into a sing
We sent a real
GET request to this endpoint and it
answered 402 with payment requirements we could parse.
- Price
- $0.08
- Network
- base
- Pay to
- 0x4df66B6c140778fe0717880A7c6dDE5Ea53AcDeA
- Spec dialect
- v2 (declares x402Version 2)
- Transport
- PAYMENT-REQUIRED header
- HTTP method
- GET
- Response latency
- 76 ms
- Payment options
- 1 usable of 1
- Last checked
- 2026-09-06T01:12:55.122Z (2h ago)
- Category
- search
Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fapi.kadec0.xyz%2Fv1%2Flit-review"