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Aether Base Gas Estimator
x402
Aether Base Gas Estimator is a paid API for AI agents from aether-x402.vercel.app, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-12).
Estimates the gas cost (in gas units, ETH, and USD) for a given transaction on the Base blockchain network.
Price / call$0.002
Success—
StatusUnknown
How this service works
Pay-per-call Base onchain data, token risk verdicts and x402 payability audits over x402 (USDC on Base).
Output
Returns a JSON object with the estimated gas units required ('gas'), the cost in ETH ('costEth'), and the equivalent cost in USD ('costUsd') for the specified transaction on Base.
Example use cases
Pre-flight check for token transfer
“Before I send that ERC-20 transfer on Base from 0x1234...abcd to 0x5678...ef01 with calldata 0xa9059cbb..., can you estimate how much gas it will use and what it will cost me in USD?”
Smart contract call cost check
“I'm about to call a DeFi contract on Base — sender is 0xAABB...CCDD, contract address is 0x1122...3344, calldata is 0x38ed1739..., value is 0. What's the gas estimate and USD cost?”
Budget planning for batch transactions
“I need to figure out how expensive each of my swap transactions will be on Base before I automate them — can you estimate the gas in ETH and USD for a call from 0xABCD...1234 to 0x9876...FEDC with calldata 0x7ff36ab5... and value 1000000000000000?”
Technical details
Endpoint
POSThttps://aether-x402.vercel.app/v1/base/estimate-gas?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a quick, cheap ($0.002 USDC) gas estimate for a specific Base network transaction before committing to send it. It is especially useful for AI agents that need to budget transaction costs programmatically, validate that a transaction is feasible, or present cost previews to users in human-readable ETH and USD terms. Prefer it over generic Ethereum estimators when you are specifically targeting the Base L2 network.
Side effects
- Invalid or malformed Ethereum address format returns a validation error
- Malformed or overly long calldata (>20000 chars) is rejected
- Transaction simulation reverts if the 'from' address has insufficient balance for the given value
- Network connectivity issues with Base RPC may return a 502 or timeout
- Payment not received (x402 protocol failure) results in 402 response before data is returned
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| to | string | |
| data | string | |
| from | string | |
| value | — |
Output
Schema · Response
{
"type": "json",
"example": {
"gas": "21000",
"costEth": "0.0000002",
"costUsd": 0.0005
}
}Tags
x402
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