the402 endpoint detail

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x402.forgemesh.io car-mpg-lookup

https://x402.forgemesh.io/car-mpg-lookup

answers 402

MPG lookup for any US-market car since 1984: official test-cycle city, highway, and combined miles per gallon plus fuel type and CO2 per mile, by year/make/model or VIN. Multiple engine/transmission variants are returned with ids so you can query the exact one. Clean structured JSON.

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
0x850363a27F0aC6fEb9C7a3eC4C1d295262dF9432
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
POST
Response latency
47 ms
Payment options
1 usable of 1
Last checked
2026-09-06T01:22:19.313Z (28d ago)
Category
search

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fx402.forgemesh.io%2Fcar-mpg-lookup"