{"uid":"cap_OVbMFoEvnl0zc8NboyKJp","slug":"aether-base-gas-estimator-9255f452","name":"Aether Base Gas Estimator","description":"Pay-per-call Base onchain data, token risk verdicts and x402 payability audits over x402 (USDC on Base).","url":"https://aether-x402.vercel.app/v1/base/estimate-gas?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"to":{"type":"string","pattern":"^0x[0-9a-fA-F]{40}$"},"data":{"type":"string","pattern":"^0x[0-9a-fA-F]*$","maxLength":20000},"from":{"type":"string","pattern":"^0x[0-9a-fA-F]{40}$"},"value":{"type":["string","integer"],"pattern":"^[0-9]+$"}}},"responseSchema":{"type":"json","example":{"gas":"21000","costEth":"0.0000002","costUsd":0.0005}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","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":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_dORvrtSyc1OI6bopvP_Yd","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Estimates the gas cost (in gas units, ETH, and USD) for a given transaction on the Base blockchain network.","exampleAgentPrompt":"Can you estimate the gas cost for sending a transaction on Base from 0xAbC...123 to 0xDeF...456 with calldata 0xa9059cbb... and a value of 0 — I want to know the gas units, ETH cost, and what that works out to in USD before I commit to sending it.","exampleUseCases":[{"title":"Pre-flight check for token transfer","prompt":"Before I send that ERC-20 transfer on Base from 0x1234...abcd to 0x5678...ef01 with calldata 0xa9059cbb..., can you estimate how much gas it will use and what it will cost me in USD?"},{"title":"Smart contract call cost check","prompt":"I'm about to call a DeFi contract on Base — sender is 0xAABB...CCDD, contract address is 0x1122...3344, calldata is 0x38ed1739..., value is 0. What's the gas estimate and USD cost?"},{"title":"Budget planning for batch transactions","prompt":"I need to figure out how expensive each of my swap transactions will be on Base before I automate them — can you estimate the gas in ETH and USD for a call from 0xABCD...1234 to 0x9876...FEDC with calldata 0x7ff36ab5... and value 1000000000000000?"}],"resultDescription":"Returns a JSON object with the estimated gas units required ('gas'), the cost in ETH ('costEth'), and the equivalent cost in USD ('costUsd') for the specified transaction on Base.","failureModes":["Invalid or malformed Ethereum address format returns a validation error","Malformed or overly long calldata (>20000 chars) is rejected","Transaction simulation reverts if the 'from' address has insufficient balance for the given value","Network connectivity issues with Base RPC may return a 502 or timeout","Payment not received (x402 protocol failure) results in 402 response before data is returned"],"whenToPreferThis":"Choose this endpoint when you need a quick, cheap ($0.002 USDC) gas estimate for a specific Base network transaction before committing to send it. It is especially useful for AI agents that need to budget transaction costs programmatically, validate that a transaction is feasible, or present cost previews to users in human-readable ETH and USD terms. Prefer it over generic Ethereum estimators when you are specifically targeting the Base L2 network.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-12T18:40:21.876Z","isFirstParty":false,"canonicalSlug":"aether-base-gas-estimator-9255f452"}