the402 endpoint detail

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penny402.fun brainstorm

https://penny402.fun/brainstorm

answers 402

Between one and five deliberately divergent takes on whatever you are working on, returned as an array of strings. Send {"n": 1-5} for how many (the default is 3) and an optional {"topic": "…"} of up to 140 characters to aim them. Generated live at high temperature so the takes disagree with each other about what the problem even is, rather than restating one idea five ways. No pool, no cache, and

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
156 ms
Payment options
2 usable of 2
Last checked
2026-09-06T01:12:20.581Z (21d ago)
Category
ai-inference

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