x402 census · x402.forgemesh.io · b3a34b5ae9eb · JSON

POST /fuel-cost-lookup

live

Annual fuel cost estimate for a specific vehicle: official fuel-economy record with combined MPG and a yearly fuel cost figure at average prices and 15,000 miles/year, plus CO2 emissions per mile. Compare candidate vehicles' running costs in one call each. Query by year/make/model, VIN, or variant id.

Verdict: live. The unpaid GET reached a valid 402 (confirmed by the re-probe of 2026-10-01).

Facts from the catalogs

Field Value

URL https://x402.forgemesh.io/fuel-cost-lookup

Method POST

Price $0.005 USDC = 5000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Network eip155:8453 (base)

payTo 0x850363a27F0aC6fEb9C7a3eC4C1d295262dF9432

Seller x402.forgemesh.io

Catalogs cdp (row updated 2026-09-03)

Listed since (lower bound) 2026-09-03 (earliest catalog timestamp; catalogs report last-update times only)

Last catalog update 2026-09-03

CDP quality counters 1 calls and 1 unique payers in 30 days, last call 2026-09-03 (catalog-reported, not verified on chain)

Category (keyword rule) crypto-data

Templated path no

x402Version in catalog 2

Service name / tags none

Unpaid probe (census of )

Field

Value

Probe

not probed in this build

Latest re-probe

Field Value

Re-probed at 2026-10-01T22:13:42.000Z (cron)

Verdict now live changed from unprobed

HEAD / GET 402 / 402

accepts[0] {"scheme":"exact","network":"base","amount":"5000","payTo":"0x850363a27F0aC6fEb9C7a3eC4C1d295262dF9432","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","maxTimeoutSeconds":300,"extra":{"name":"USD Coin","version":"2"}}

Live amount equals catalog price yes

Latency 982 ms

Error none

On-chain facts for the payTo (public address)

Field Value

Distinct payers 16

Payments 45

USDC volume $0.54

Median payment $0.005

First / last payment 2026-07-16 / 2026-09-30

Sampler-shaped share of payments 100.0%

Payers that are not samplers 0

Source forensics-2026-09-30

Address 0x850363a27F0aC6fEb9C7a3eC4C1d295262dF9432

Declared input and output (extensions.bazaar)

{
 "input": {
  "body": {
   "make": "Honda",
   "model": "Accord",
   "model_year": "2020"
  },
  "bodyType": "json",
  "method": "POST",
  "type": "http"
 },
 "output": {
  "type": "json",
  "example": {
   "attribution": "US DOE/EPA fuel economy database (public domain)",
   "fuel_economy": {
    "annual_fuel_cost_usd": 1600,
    "city_mpg": 26,
    "co2_tailpipe_g_per_mi": 302,
    "combined_mpg": 29,
    "fuel_type": "Regular",
    "highway_mpg": 35
   },
   "matched_variant": {
    "description": "2020 Honda Accord — Man 6-spd 1.5L",
    "vehicle_id": 42069
   }
  }
 }
}

Try it (unpaid: shows the 402)

curl -si -X POST 'https://x402.forgemesh.io/fuel-cost-lookup' -H 'accept: application/json' -H 'content-type: application/json' --data '{}'

The catalog declares POST. A 402 answer carries the payment requirements in the JSON body and, for x402 v2, base64 in the PAYMENT-REQUIRED header. This page never sends a payment.

Paid checks (x402, USDC on Base)

GET https://bazaar.agentexchange.work/r/b3a34b5ae9eb/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"b3a34b5ae9eb"} places this resource at the top of the report and search pages for 30 days for $1.00, labelled. Unpaid requests answer 402 with the terms. Pricing.

Catalog references: agentic.market (CDP Bazaar front end) · this record as JSON · all resources on x402.forgemesh.io.