the402 endpoint detail

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aep-api.fly.dev v1 citation-report

https://aep-api.fly.dev/v1/citation-report

answers 402

Verify a bibliography. For every reference: exists, resolves, retracted/corrected/flagged, title/author/year match against the registered record, and a rule-derived fabrication risk — as a signed (Ed25519, RFC 8785 canonical JSON), byte-reproducible JSON report. Input: structured references or BibTeX. No LLM; every claim carries its source and retrieval time. Tier: standard, up to 50 references.

We sent a real POST request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$1.00
Network
base
Pay to
0xf184B4ed26E0866417487C56ACda10DDB5411e9d
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
POST
Response latency
255 ms
Payment options
1 usable of 1
Last checked
2026-09-06T01:16:45.705Z (2h ago)
Category
ai-inference

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