x402 census · base-gas-x402-production.up.railway.app · 22698259db68 · JSON

GET /gas/history

live

Base gas history sampled every 5 minutes: time series, min/max/average/median, and whether gas is cheap, normal, expensive or flat right now.

Verdict: live. The unpaid GET reached a valid 402. The live amount equals the catalog price.

Facts from the catalogs

Field Value

URL https://base-gas-x402-production.up.railway.app/gas/history

Method GET

Price $0.01 USDC = 10000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Network eip155:8453 (base)

payTo 0x0D083590c048A243e24a75E3a7C968145DE25B44

Seller base-gas-x402-production.up.railway.app

Catalogs cdp (row updated 2026-10-23)

Listed since (lower bound) 2026-10-23 (earliest catalog timestamp; catalogs report last-update times only)

Last catalog update 2026-10-23

CDP quality counters 4 calls and 3 unique payers in 30 days, last call 2026-10-23 (catalog-reported, not verified on chain)

Category (keyword rule) chain-rpc

Templated path no

x402Version in catalog 2

Service name / tags base-gas-x402 · gas history, gas trend, base, base-l2, onchain-data

Unpaid probe (census of 2026-10-22)

Field Value

Probed at 2026-10-22T00:33:26.774Z

HEAD 405

GET 402

Verdict live live: valid 402 to an unpaid GET

402 carried in header

x402Version in the 402 2

accepts[0] {"scheme":"exact","network":"eip155:8453","amount":"10000","payTo":"0x0D083590c048A243e24a75E3a7C968145DE25B44","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","maxTimeoutSeconds":300,"extra":{"name":"USD Coin","version":"2"}}

Live amount equals catalog price yes

Live payTo equals catalog payTo yes

extensions.bazaar in the 402 yes

PAYMENT-REQUIRED header yes

WWW-Authenticate offer none

Content type / server / CORS application/json / railway-hikari / none

Latency 129 ms

Error Payment required

No hourly re-probe has reached this resource yet; the cron covers a rotating slice of 150 per hour.

On-chain facts for the payTo (public address)

Field Value

Distinct payers 6

Payments 6

USDC volume $0.04

Median payment $0.005

First / last payment 2026-08-30 / 2026-09-15

Sampler-shaped share of payments 100.0%

Payers that are not samplers 0

Source forensics-2026-09-30

Address 0x0D083590c048A243e24a75E3a7C968145DE25B44 (contract: EIP7702Proxy)

Declared input and output (extensions.bazaar)

{
 "input": {
  "method": "GET",
  "queryParams": {
   "hours": 24
  },
  "type": "http"
 },
 "output": {
  "type": "json",
  "example": {
   "currentGasPrice": 0.006,
   "requestedHours": 24,
   "samples": [
    {
     "gasPrice": 0.006,
     "t": "2026-07-26T06:00:00.000Z"
    }
   ],
   "summary": {
    "avg": 0.009,
    "max": 0.031,
    "median": 0.007,
    "min": 0.005
   },
   "units": "gwei",
   "verdict": "cheap"
  }
 }
}

Try it (unpaid: shows the 402)

curl -si -X GET 'https://base-gas-x402-production.up.railway.app/gas/history' -H 'accept: application/json'

The catalog declares GET. 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/22698259db68/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"22698259db68"} 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 base-gas-x402-production.up.railway.app.