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Phantom API — Solana Gas Fee Estimator
x402
Phantom API — Solana Gas Fee 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 the gas/transaction fee for a Solana transaction given sender, recipient, data, and value fields
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 fee (likely in lamports or SOL) for the described Solana transaction, allowing the caller to budget transaction costs before submitting on-chain.
Example use cases
Pre-flight cost check before SOL transfer
“Before I send 2 SOL from my wallet 7xKf1234 to 9pQr5678, can you estimate what the network fee will be so I know the total cost?”
Smart contract call fee estimation
“I'm about to call a Solana smart contract — can you estimate the gas fee for a transaction from address AAAbbb to contract CCCddd with this data payload '0xabcdef' and zero SOL value?”
DeFi trade fee budgeting
“I want to know how much in fees I'll pay on Solana before executing my swap — estimate the transaction cost from my wallet 5xLm9876 to the DEX address 3kPz4321 with value 0.5 SOL.”
Technical details
Endpoint
POSThttps://phantom-api-omega.vercel.app/api/solana/gas/estimateWhen to prefer
Use this endpoint when you need a quick, pay-per-call Solana gas fee estimate without running a full RPC node or subscribing to a monthly plan. Ideal for agents that need on-demand cost checks before executing Solana transactions across 57+ supported networks, especially when cost predictability and low per-call pricing ($0.01 USDC) matters more than bulk throughput.
Side effects
- Invalid or malformed wallet address in 'from' or 'to' fields returns an error
- Malformed 'data' field (non-hex or wrong format) may cause estimation failure
- Network congestion or RPC unavailability may return a timeout or 503
- Missing required fields may return a 400 bad request
- Estimation may be inaccurate if Solana network fee schedule has recently changed
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| to | string | |
| data | string | |
| from | string | |
| value | string |
Tags
x402
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