Endpoint · lookupPOSTx402.forgemesh.io/vehicle-fuel-economy

Official fuel-economy lookup for US light-duty vehicles back to 1984: city, highway, and combined MPG, fuel type, estimated annual fuel cost, tailpipe CO2 grams per mile, and…

Official fuel-economy lookup for US light-duty vehicles back to 1984: city, highway, and combined MPG, fuel type, estimated annual fuel cost, tailpipe CO2 grams per mile, and greenhouse-gas score — by year/make/model, VIN, or exact variant id. Sibling engine/transmission variants are listed so agents can price the exact configuration. For cost-of-ownership, shopping, and fleet agents. Response includes affiliate offers for full VIN history reports.

UNRATEDListed

Overview

Grade?

UNRATED

0 of 30 paid calls toward a letter

Price

$0.005 per call

Paid calls

none yet

delivery unknown until someone pays

More info

Seller?

0x84a1827f…a4a57a08

URL

https://x402.forgemesh.io/vehicle-fuel-economy

Seen

first 29 days ago · last 1 day ago

54 free handshakes

Payment

Pays through

x402 · MPP evm

Offered on?

Base USDC

Listed on?

Base

Score, from free handshakes onlyweights 2026.09.6

UN
RATED

0.838 liveness verified, no letter

To a letter · 30 paid calls

0 of 30

Held back by sample size, not by the seller · gap to 1.000 is 0.162: 0.083 uncertain ? + 0.079 short ? · 0.062 to A

How the composite of 0.838 is made up, part by part
Component	Weight	Measured	Lower bound ?		Adds	Short ?	Uncertain ?
latency p95costs the most it answered as fast as its class	0.20	0.61	0.537		0.107	−0.079	−0.014
liveness it answered at all	0.60	1.00	0.884		0.530	0	−0.070
price stability the price stayed where it was listed	0.20	1.00	1.000		0.200	0	0
Composite	1.00		0.838	gap to 1.000 = 0.162 · 0.079 short · 0.083 uncertain	0.838	−0.079	−0.083

Not measured: correctness · nobody paid; honesty · nobody paid; schema conformance · no answer had a published shape to check

The multiplication, written out

  0.200 × 0.537   latency p95    
+ 0.600 × 0.884   liveness       
+ 0.200 × 1.000   price stability
= 0.838           → UNRATED: 53 of 30 paid calls      weights 2026.09.6 · 53 samples · seed cap_01M1RDA6QQC03KQ69VGYTS0KSC|2026-09-03T10:11:11.115Z|2026.09.6

Verify it yourselfnpx teppi-check https://x402.forgemesh.io/vehicle-fuel-economycurl -s https://api.teppi.xyz/v1/trust/cap_01M1RDA6QQC03KQ69VGYTS0KSC