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base-gas-x402

Live Base mainnet gas oracle: EIP-1559 base fee, low/medium/high priority tiers in gwei, and the cost of any transaction in USD and ETH.

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

Host	base-gas-x402-production.up.railway.app
Price	$0.002–$0.02 per call
Network	Base
Paid endpoints listed	4
Calls, last 30 days*	660
Most unique payers on one endpoint (30 days)*	9
Last paid call*	2026-10-18
Tags	base, base-l2, gas, gas price, gas oracle, gas timing, cheapest time to transact, gas savings

* From the public x402 Bazaar index (snapshot 2026-10-18T04:07Z); reported by the facilitator, not measured by us.

Endpoints

URL	Method	Price
`https://base-gas-x402-production.up.railway.app/gas` Live Base mainnet gas oracle: EIP-1559 base fee, low/medium/high priority tiers in gwei, and the cost of any…	GET	$0.002
`https://base-gas-x402-production.up.railway.app/gas/cheapest-window` When to transact on Base, from 7 days of gas history: the hours to avoid, the cheapest hour in UTC, and the saving in…	GET	$0.02
`https://base-gas-x402-production.up.railway.app/gas/compare` Live gas cost across Base, OP Mainnet, Arbitrum One and Ethereum in one call, in USD and ETH, ranked cheapest first.	GET	$0.01
`https://base-gas-x402-production.up.railway.app/gas/history` Base gas history sampled every 5 minutes: time series, min/max/average/median, and whether gas is cheap, normal,…	GET	$0.01

Source: x402 Bazaar discovery API (Coinbase CDP) · Licence: Public discovery metadata; descriptions by each provider. Listed in x402 pay-per-call APIs. We list tools; we do not test, rate or endorse them.

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