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polyform.polyform-org.workers.dev vehicle fuel-economy
https://polyform.polyform-org.workers.dev/v1/vehicle/fuel-economy
answers 402
EPA MPG figures and estimated annual fuel cost for a year/make/model. Source: fueleconomy.gov. JSON.
We sent a real
GET request to this endpoint and it
answered 402 with payment requirements we could parse.
- Price
- $0.003
- Network
- base
- Pay to
- 0xE9468282B22c09243Ce1a455fE2d1DF0d7276dE6
- Spec dialect
- v2 (declares x402Version 2)
- Transport
- PAYMENT-REQUIRED header
- HTTP method
- GET
- Response latency
- 6 ms
- Payment options
- 1 usable of 1
- Last checked
- 2026-09-06T01:13:09.090Z (22d ago)
- Category
- ai-inference
Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fpolyform.polyform-org.workers.dev%2Fv1%2Fvehicle%2Ffuel-economy"