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EVM Gas Price Oracle
x402
EVM Gas Price Oracle is a paid API for AI agents from pay.brianbooms.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-10).
Returns the current gas price (base fee + priority fee) in wei and gwei for a specified EVM-compatible blockchain network by querying the chain's public RPC.
Price / call$0.01
Success—
StatusUnknown
How this service works
Use when an agent needs the current gas price on an EVM chain before sending a transaction — cost estimation, fee budgeting, or deciding whether to transact now. Pass network (base, polygon, arbitrum, avalanche); returns live eth_gasPrice plus priority fee in wei and gwei from the chain's public RPC. Use permitted: build it into your products and services, paid or free. Raw redistribution of the feed itself is prohibited.
Output
Returns the live gas price from the specified EVM chain's public RPC, including the current eth_gasPrice and priority fee expressed in both wei and gwei, enabling precise fee estimation before submitting a transaction.
Example use cases
Pre-transaction gas check on Base
“Before I send this token transfer on Base, can you check what the current gas price is in gwei? I want to make sure fees are reasonable.”
DeFi trade fee budgeting on Polygon
“I'm about to execute a swap on Polygon — what's the live gas price right now in both wei and gwei so I can estimate the total transaction cost?”
Multi-chain gas comparison for cost routing
“Check the current gas prices on Arbitrum and Avalanche for me — I want to see which chain is cheaper to transact on right now before I decide where to execute.”
Technical details
Endpoint
GEThttps://pay.brianbooms.com/api/v1/data/gas-price?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an AI agent needs to programmatically check live EVM gas prices before submitting or budgeting a transaction on Base, Polygon, Arbitrum, or Avalanche. It is ideal for real-time fee estimation workflows, cost-gating logic (only transact if gas is below a threshold), or multi-chain routing decisions. Prefer it over on-chain RPC calls when you need a simple REST interface without managing Web3 connections directly.
Side effects
- Unsupported or misspelled network name returns an error or defaults to Base
- RPC node unavailability causes a timeout or stale price response
- Network congestion may cause rapidly changing prices making the returned value outdated by the time the transaction is submitted
- Missing network parameter defaults to Base, which may not be the intended chain
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| network | string | EVM chain id. Example: base (default), polygon, arbitrum, avalanche |
Tags
x402
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