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Phantom API — Metis Gas Estimator
x402
Phantom API — Metis 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 2026-09-15).
Estimates gas costs for a transaction on the Metis blockchain network given recipient, sender, value, and calldata.
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) required to execute the specified transaction on the Metis blockchain, allowing the caller to calculate transaction fees before submission.
Example use cases
Pre-flight check before token transfer
“Before I send 100 METIS tokens from my wallet 0xSender... to 0xRecipient... on Metis, can you estimate the gas so I know the total cost?”
Smart contract interaction cost check
“I want to call this Metis DeFi contract at 0xContractAddr... using calldata 0xabcdef... from my wallet 0xMyWallet... — what's the estimated gas going to be?”
Gas budget planning for dApp
“I'm building a dApp and need to know the gas estimate for a typical ERC-20 transfer on Metis from 0xFrom... to 0xTo... with standard transfer calldata — can you run that estimate for me?”
Technical details
Endpoint
POSThttps://phantom-api-omega.vercel.app/api/metis/gas/estimateWhen to prefer
Use this endpoint when you need a gas estimate specifically for the Metis network (an EVM-compatible Layer 2). Prefer this over generic gas oracles when you need transaction-specific estimates based on actual calldata and addresses, or when you want pay-per-call pricing without a subscription. Best suited for agents that need to preflight transactions, plan gas budgets, or validate contract call costs on Metis before committing.
Side effects
- Invalid or malformed Ethereum address in 'to' or 'from' fields returns an error
- Malformed or invalid hex calldata in 'data' field causes rejection
- Transaction would revert on-chain, causing gas estimation to fail
- Network unavailability or RPC node errors return a 5xx response
- Missing required fields may return a validation error
- Payment not included or insufficient USDC causes 402 payment required response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| to | string | |
| data | string | |
| from | string | |
| value | string |
Tags
x402
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