the402 endpoint detail

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api.govparse.io warning-letters search

https://api.govparse.io/v1/fda/warning-letters/search

payable

Which FDA-regulated firms have an open FDA warning letter? Search the FDA Warning Letters index by company, product area (drugs, devices, biologics, food, dietary-supplement, cosmetics, tobacco, veterinary), issuing office, subject (CGMP, adulterated, misbranded), open/closed status, or issue/posted date. Returns the recipient firm (entity-resolved where possible), issuing office, subject, and res

We sent a real GET request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$1.25
Network
base
Pay to
0x3873d15CF3209c32aaA8d9AA542164E658567129
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
GET
Response latency
281 ms
Payment options
2 usable of 2
Last checked
2026-08-10T09:18:46.963Z (1d ago)
Category
search

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fapi.govparse.io%2Fv1%2Ffda%2Fwarning-letters%2Fsearch"