Agent Exchange x402 census and directory

x402 census · chain.cyberwarex.com · 4757d55a5bbf · JSON

GET /gas

unprobed

Live gas market on any major EVM chain: current gas price, base fee and priority-fee percentiles (p25/p50/p75) in gwei, plus the estimated cost in native token and USD for a plain transfer (21k gas) and a typical DEX swap (200k gas). Lets an agent decide whether a transaction is worth sending right now or should wait for cheaper gas, and budget the fee before signing.

Verdict: not verified by an unpaid GET. not probed yet. This says nothing about whether the route works when called as declared.

Facts from the catalogs

FieldValue
URLhttps://chain.cyberwarex.com/gas
MethodGET
Price$0.002 USDC = 2000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Networkeip155:8453 (base)
payTo0x058D0Cc5CC97e61e8A9f38D6d6365bce525921B2
Sellerchain.cyberwarex.com
Catalogscdp (row updated 2026-09-17)
Listed since (lower bound)2026-09-17 (earliest catalog timestamp; catalogs report last-update times only)
Last catalog update2026-09-17
CDP quality counters2 calls and 2 unique payers in 30 days, last call 2026-09-17 (catalog-reported, not verified on chain)
Category (keyword rule)money-movement
Templated pathno
x402Version in catalog2
Service name / tagsOnchain Query API · gas, gas-fees, evm, blockchain, transaction-cost

Unpaid probe (census of )

FieldValue
Probenot probed in this build

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)

FieldValue
Distinct payers5
Payments18
USDC volume$0.16
Median payment$0.003
First / last payment2026-08-30 / 2026-09-29
Sampler-shaped share of payments94.4%
Payers that are not samplers1
Sourceforensics-2026-09-30
Address0x058D0Cc5CC97e61e8A9f38D6d6365bce525921B2

Declared input and output (extensions.bazaar)

{
 "input": {
  "method": "GET",
  "queryParams": {
   "chain": "base"
  },
  "type": "http"
 },
 "output": {
  "type": "json",
  "example": {
   "base_fee_gwei": 0.004119,
   "chain": "base",
   "est_cost": {
    "swap_200k": {
     "native": 0.000001127,
     "usd": 0.003599
    },
    "transfer_21k": {
     "native": 1.18e-7,
     "usd": 0.000377
    }
   },
   "gas_price_gwei": 0.008312,
   "native": "ETH",
   "native_usd": 3194.51,
   "priority_fee_gwei": {
    "p25": 0.001,
    "p50": 0.0015,
    "p75": 0.0031
   }
  }
 }
}

Try it (unpaid: shows the 402)

curl -si -X GET 'https://chain.cyberwarex.com/gas' -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/4757d55a5bbf/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"4757d55a5bbf"} 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 chain.cyberwarex.com.