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Phantom API — Sonic Gas Estimator
x402
Phantom API — Sonic 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 Sonic blockchain network before submission
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 the specified transaction on the Sonic network, enabling the caller to assess transaction cost and feasibility before broadcasting.
Example use cases
Pre-flight gas check for token transfer
“Before I send 100 USDC to 0x1234...abcd on Sonic, can you estimate how much gas that transfer will cost so I know if my wallet has enough?”
Smart contract interaction cost estimate
“I want to call a swap function on a Sonic DEX — the contract is 0xDEF...789, calldata is 0x38ed1739..., from my address 0xABC...001. What's the expected gas cost before I sign anything?”
Budget planning for DeFi automation
“I'm building an automated yield farming bot on Sonic and need to know the estimated gas cost for a typical harvest transaction with this calldata: 0x4e71d92d, from 0xBot...111 to 0xFarm...222.”
Technical details
Endpoint
POSThttps://phantom-api-omega.vercel.app/api/sonic/gas/estimateWhen to prefer
Use this endpoint when you need to estimate gas costs specifically on the Sonic blockchain network before submitting a transaction. Prefer it over generic gas APIs when working with Sonic-native DeFi protocols, smart contracts, or token transfers on that chain. It is appropriate for pre-flight checks, wallet UX, or cost-budgeting in automated agents operating on Sonic.
Side effects
- Invalid or malformed address in 'to' or 'from' fields returns a 400 error
- Malformed calldata in the 'data' field causes estimation failure
- Sonic network node unavailability leads to timeout or 503 error
- Payment not included or insufficient triggers a 402 Payment Required response
- Transaction that would revert on-chain may return an error or zero estimate
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| to | string | |
| data | string | |
| from | string | |
| value | string |
Tags
x402
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