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Phantom API — MegaETH Gas Estimate
x402
Phantom API — MegaETH Gas Estimate is a paid API for AI agents from phantom-api-omega.vercel.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Estimates gas cost for a transaction on the MegaETH network given recipient, calldata, sender, and value
Price / call$0.01
Success—
StatusUnknown
How this service works
Lightning-fast access to blockchain data, smart contract insights, and Web3 infrastructure across 57+ networks. Pay-per-call via x402.
Output
Returns a gas estimate (in gas units) for the described transaction on the MegaETH network, allowing agents to forecast transaction costs and determine if sufficient funds are available before broadcasting.
Example use cases
Pre-flight check before token transfer
“Before I send this ERC-20 transfer on MegaETH, can you estimate the gas cost? The 'to' is 0x1234...abcd, 'from' is 0xdead...beef, calldata is 0xa9059cbb000...0001, and value is 0.”
Smart contract deployment cost check
“I'm about to deploy a smart contract on MegaETH — can you estimate the gas it'll use? Here's the bytecode as the data field, from address 0xABC...111, no recipient address needed, and value is 0.”
DeFi swap gas estimation
“Estimate the gas for a Uniswap swap call on MegaETH — the router contract is 0xROUTER...XYZ, my wallet is 0xMYWALLET...ABC, here's the swap calldata 0x38ed1739..., and the ETH value is 0.05.”
Technical details
Endpoint
POSThttps://phantom-api-omega.vercel.app/api/megaeth/gas/estimateWhen to prefer
Use this endpoint when you need a fast, pay-per-call gas estimate specifically on the MegaETH network without managing your own RPC node. Prefer this over general-purpose Ethereum gas estimators when targeting MegaETH specifically, and over subscription-based node providers when you want usage-based pricing via x402.
Side effects
- Invalid or malformed address in 'to' or 'from' fields returns an error
- Malformed or non-hex calldata causes a parse error
- Transaction simulation reverts (e.g. insufficient balance, bad calldata) returns a revert error
- Network unavailability or RPC timeout causes a service error
- Missing required fields may return a validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| to | string | |
| data | string | |
| from | string | |
| value | string |
Tags
x402
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