{"uid":"cap_uABxfMgpI1_nNtbIBxt2K","slug":"phantom-api-sei-network-gas-estimator-6cee20a7","name":"Phantom API — Sei Network Gas Estimator","description":"Lightning-fast access to blockchain data, smart contract insights, and Web3 infrastructure across 57+ networks. Pay-per-call via x402.","url":"https://phantom-api-omega.vercel.app/api/sei/gas/estimate?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"to":{"type":"string"},"data":{"type":"string"},"from":{"type":"string"},"value":{"type":"string"}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_a80DhTwnXOnIEPSo38q3v","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Estimates gas costs for a transaction on the Sei blockchain network before submission","exampleAgentPrompt":"Before I send 10 SEI to 0xAbCd...1234 from my wallet 0x9876...FEDC on the Sei network, can you estimate how much gas this transaction will cost?","exampleUseCases":[{"title":"Pre-flight check before token transfer","prompt":"I want to send some SEI tokens from 0xAAA...111 to 0xBBB...222 — can you estimate the gas fees before I actually submit the transaction?"},{"title":"Smart contract call cost estimation","prompt":"I'm about to call a smart contract on Sei at address 0xContract...XYZ with this calldata: 0xa9059cbb000...  Can you tell me how much gas it's going to use so I can budget accordingly?"},{"title":"DeFi transaction cost validation","prompt":"Before I execute this DeFi swap on Sei — from wallet 0xMyWallet...123 to the DEX contract 0xDEX...456 with value 5000000 and data 0xswapExact... — please estimate the gas so I know if it's worth it at current gas prices."}],"resultDescription":"Returns a gas estimate (in gas units) for the described Sei network transaction, allowing the caller to understand expected transaction fees before committing to on-chain execution.","failureModes":["Invalid or malformed Ethereum-style address in 'to' or 'from' fields returns an error","Invalid hex calldata in 'data' field causes estimation failure","Transaction that would revert on-chain may return an error or zero estimate","Network congestion or Sei RPC node unavailability causes timeout","Missing required fields may result in a 400 Bad Request"],"whenToPreferThis":"Choose this endpoint when you need gas cost estimates specifically on the Sei network prior to submitting a transaction. It is ideal for pre-flight fee checks, DeFi transaction cost validation, and smart contract interaction budgeting on Sei. Use this over generic gas tools when you need Sei-specific estimation via a pay-per-call model without managing your own RPC infrastructure.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-17T18:55:57.069Z","isFirstParty":false,"canonicalSlug":"phantom-api-sei-network-gas-estimator-6cee20a7"}