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Phantom API — opBNB Gas Estimator
x402
Phantom API — opBNB Gas Estimator 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 costs for transactions on the opBNB network given transaction parameters
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 an estimated gas amount (in gas units) for executing the specified transaction on the opBNB network, allowing callers to budget fees before submission.
Example use cases
Pre-flight check for DeFi swap
“I'm about to call a DEX contract on opBNB from 0xMySenderAddress to 0xDexContractAddress with swap calldata 0xswapData — can you estimate the gas before I submit?”
NFT mint gas budgeting
“What's the estimated gas for minting an NFT on opBNB? The contract is 0xNFTContract, I'm calling from 0xMyWallet, and the mint calldata is 0xmintCalldata.”
Smart contract deployment cost check
“Can you estimate gas for deploying a smart contract on opBNB? The bytecode is 0xdeployBytecode and I'm sending from 0xDeployerAddress.”
Technical details
Endpoint
POSThttps://phantom-api-omega.vercel.app/api/opbnb/gas/estimateWhen to prefer
Use this endpoint when you need a quick, pay-per-call gas estimate specifically for the opBNB (BNB Chain L2) network without setting up your own RPC node or managing Web3 infrastructure. Ideal for agents that need lightweight pre-transaction cost checks across opBNB without committing to a full node provider subscription.
Side effects
- Invalid or malformed address in 'to' or 'from' field returns an error
- Malformed or invalid calldata in 'data' field causes estimation failure
- Transaction would revert on-chain causing gas estimation to fail with a revert error
- Network congestion or RPC unavailability may cause timeouts
- 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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