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Saylor Innovations Gas Estimate (Ethereum)
x402
Saylor Innovations Gas Estimate (Ethereum) is a paid API for AI agents from saylorinnovations.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-30).
Estimates gas usage and fee cost for a transaction on the Ethereum mainnet, returning gas units, gas price in gwei, and estimated native fee.
Price / call$0.002
Success—
StatusUnknown
How this service works
Gas Estimate (ethereum). Ethereum gas estimate for a transaction (?to=, ?from=, ?data=, ?value=) with current gas price and estimated fee in the native coin; reverts reported cleanly.
Output
Returns a JSON object with the chain name ('ethereum'), estimated gas units as a number (or null if failed), current gas price in gwei, estimated transaction fee in native ETH, a boolean indicating if the transaction would revert, and an error string if applicable.
Example use cases
Pre-flight DeFi swap cost check
“Before I swap tokens on Uniswap on Ethereum mainnet, can you estimate the gas and ETH fee for calling the router contract at 0xE592427A0AEce92De3Edee1F18E0157C05861564 with my swap calldata 0x414bf389...?”
Smart contract deployment cost estimate
“I want to know how much gas and ETH it'll cost to deploy my contract — can you estimate the gas for sending calldata 0x6080604052... to the Ethereum zero address?”
Revert check before on-chain vote
“Can you check if my governance vote transaction to contract 0x408ED6354d4973f66138C91495F2f2FCbd8724C3 with calldata 0x56781388... will revert on Ethereum, and give me the estimated gas if it won't?”
Technical details
Endpoint
GEThttps://saylorinnovations.com/api/evm/ethereum/estimate-gas?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a quick, paid on-chain gas estimate for Ethereum mainnet specifically — particularly when you want both the gas unit count and the current gwei price together with the native ETH fee in a single call, and when you also want to know upfront whether the transaction would revert before executing it.
Side effects
- Invalid or non-existent 'to' address returns an error message with reverted=true
- Malformed calldata causes simulation failure with error detail
- Transaction that would revert on-chain returns reverted=true and gas=null
- Network congestion or RPC unavailability may result in timeout or null gas values
- Missing required 'to' parameter returns a validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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