the402 endpoint detail

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penny402.fun oblique

https://penny402.fun/oblique

answers 402

One original constraint card in the tradition of lateral-thinking decks: a short instruction, reversal or question you can apply to whatever is stuck, written fresh by a model at high temperature on every call. The cards are ours, never a card from any published deck. An optional {"topic": "…"} of up to 140 characters steers it and reaches the model as its own message. No pool, no cache, and nothi

We sent a real POST request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.0025
Network
base
Pay to
0x9d0bb5dA24cADe855DeE8d1231A1c416e0bB2FFe
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
POST
Response latency
83 ms
Payment options
2 usable of 2
Last checked
2026-09-06T01:12:20.646Z (21d ago)
Category
ai-inference

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fpenny402.fun%2Foblique"