x402 census · keyronne.com · 9ad01a4ada5d · JSON
POST /api/chain-gas
unprobed
Current gas price and EIP-1559 fee suggestions (base fee, priority tip, suggested max fee) on Ethereum, Base, Arbitrum, Optimism, Polygon, or BNB Chain, in gwei. Public JSON-RPC, no API keys. POST a JSON body like: {"chain":"ethereum"}
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
| Field | Value |
|---|---|
| URL | https://keyronne.com/api/chain-gas |
| Method | POST |
| Price | $0.003 USDC = 3000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 |
| Network | eip155:8453 (base) |
| payTo | 0xB86F95EF5FA904318Ea9Df3b59AdCe099b478fC4 |
| Seller | keyronne.com |
| Catalogs | cdp (row updated 2026-09-08) |
| Listed since (lower bound) | 2026-09-08 (earliest catalog timestamp; catalogs report last-update times only) |
| Last catalog update | 2026-09-08 |
| CDP quality counters | 1 calls and 1 unique payers in 30 days, last call 2026-09-08 (catalog-reported, not verified on chain) |
| Category (keyword rule) | crypto-data |
| Templated path | no |
| x402Version in catalog | 2 |
| Service name / tags | EVM Gas Price · blockchain, gas, fees, evm, eip1559 |
Unpaid probe (census of )
| Field | Value |
|---|---|
| Probe | not 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)
| Field | Value |
|---|---|
| Distinct payers | 62 |
| Payments | 127 |
| USDC volume | $0.46 |
| Median payment | $0.005 |
| First / last payment | 2026-07-07 / 2026-09-25 |
| Sampler-shaped share of payments | 98.4% |
| Payers that are not samplers | 2 |
| Source | forensics-2026-09-30 |
| Address | 0xB86F95EF5FA904318Ea9Df3b59AdCe099b478fC4 (contract: EIP7702StatelessDeleGator) |
Declared input and output (extensions.bazaar)
{
"input": {
"body": {
"chain": "ethereum"
},
"bodyType": "json",
"method": "POST",
"type": "http"
},
"output": {
"type": "json",
"example": {
"baseFeeGwei": "11.8",
"blockNumber": 20500000,
"chain": "ethereum",
"gasPriceGwei": "12.4",
"priorityFeeGwei": "0.5",
"suggestedMaxFeeGwei": "24.1",
"suggestedPriorityFeeGwei": "0.5"
}
}
}
Try it (unpaid: shows the 402)
curl -si -X POST 'https://keyronne.com/api/chain-gas' -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/9ad01a4ada5d/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"9ad01a4ada5d"} 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 keyronne.com.