the402 endpoint detail

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x402.outpimp.com fireCalculator

https://x402.outpimp.com/fireCalculator

answers 402

FIRE (Financial Independence, Retire Early) calculator. Projects year-by-year net worth growth to determine how many years until your portfolio can sustainably fund retirement spending at a given safe withdrawal rate — precise compound-growth simulation an LLM cannot reliably run mentally. incomeGrowthRate is deflated by inflationRate internally. Past retirementAge the simulation draws down retire

We sent a real POST request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.01
Network
base
Pay to
0x548eFd4f4d4A5C3669dbb4CBB2B1A637FeeEc5F6
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
POST
Response latency
278 ms
Payment options
2 usable of 2
Last checked
2026-09-06T01:12:37.939Z (31d ago)
Category
ai-inference

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fx402.outpimp.com%2FfireCalculator"