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Phantom API – Soneium Gas Estimator
x402
Phantom API – Soneium 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 cost for a transaction on the Soneium blockchain network before it is submitted.
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 for the described Soneium transaction, typically including the estimated gas units required and possibly the current gas price, allowing callers to compute total transaction cost before broadcasting.
Example use cases
Pre-flight check before DeFi swap
“I'm about to call a swap contract on Soneium — the contract address is 0xAAA...111, my wallet is 0xBBB...222, the calldata is 0xa9059cbb..., and I'm sending 0 ETH. Estimate the gas cost for me before I submit it.”
Smart contract deployment cost estimate
“I want to know how much gas deploying my smart contract will cost on Soneium — the bytecode is 0x6080..., sending from 0xCCC...333, no ETH value attached. Can you give me a gas estimate?”
Budget check for NFT mint transaction
“I'm minting an NFT on Soneium and want to know the gas before I confirm — recipient contract is 0xDDD...444, my address is 0xEEE...555, calldata is 0x1249c58b, value is 0. What's the estimated gas?”
Technical details
Endpoint
POSThttps://phantom-api-omega.vercel.app/api/soneium/gas/estimateWhen to prefer
Use this endpoint when you specifically need gas estimation on the Soneium network before submitting a transaction. Prefer it over generic ETH mainnet estimators when targeting Soneium-specific contracts or DApps. Ideal for pre-flight cost checks, budget validation, and UX flows that show users their expected fees before signing.
Side effects
- Invalid or malformed address in 'to' or 'from' fields returns a 400 error
- Malformed calldata in 'data' field causes estimation failure
- Transaction would revert on-chain — estimator returns an error or revert reason
- Soneium RPC node unavailable — returns 503 or timeout
- Insufficient value causing underflow in simulation returns estimation error
- Empty or missing required fields may cause a 422 validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| to | string | |
| data | string | |
| from | string | |
| value | string |
Tags
x402
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