the402 endpoint detail

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aep-api.fly.dev v1 evidence-pack

https://aep-api.fly.dev/v1/evidence-pack

answers 402

Find 3-10 scholarly candidates for a question or topic. Returns DOI/OpenAlex IDs, authors, year, venue, source URLs, citation context, open-access location, and known retraction/correction warnings. JSON only. Does not claim that a paper proves a statement.

We sent a real POST request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.03
Network
base
Pay to
0xf184B4ed26E0866417487C56ACda10DDB5411e9d
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
POST
Response latency
179 ms
Payment options
1 usable of 1
Last checked
2026-09-06T01:16:46.002Z (2h ago)
Category
identity

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Faep-api.fly.dev%2Fv1%2Fevidence-pack"