the402 endpoint detail

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api.oblique.markets paid classify

https://api.oblique.markets/api/v1/paid/classify

answers 402

Single-label text classification against 2-20 caller-supplied labels — reply validated against the label set, canonical label returned, 502 instead of hallucinated labels

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
0x970007590aCC5C938cd51345B17AF51B1B40D3Ab
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
POST
Response latency
12 ms
Payment options
2 usable of 2
Last checked
2026-08-15T14:24:12.625Z (1h ago)
Category
data

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fapi.oblique.markets%2Fapi%2Fv1%2Fpaid%2Fclassify"