{"uid":"cap_1OhEQHCFzAtuSEy-GUSaG","slug":"basebuilder-crypto-gas-estimate-d8fe529b","name":"BaseBuilder Crypto Gas Estimate","description":"BaseBuilder Crypto API hub - 26 paid endpoints","url":"https://bb-crypto.vercel.app/api/gas-estimate","method":"POST","headers":{},"bodySchema":null,"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.074561","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":"$0.074561/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.074561","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.074561","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_U4CpQ3O57N9CVaLbwpn0r","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.074561","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Estimates gas fees for a crypto transaction on the Base blockchain","exampleAgentPrompt":"Can you estimate how much gas it will cost to call this smart contract function on the Base network — the contract is at 0xAbC123... and I want to call the transfer function with 100 USDC?","exampleUseCases":null,"resultDescription":"Returns an estimated gas limit and gas price for the specified transaction on the Base network, typically including the estimated total fee in both ETH and USD equivalent, allowing the user to understand the cost before submitting the transaction on-chain.","failureModes":["Invalid contract address returns 400 error","Malformed transaction data causes estimation failure","Network congestion may cause stale gas price estimates","Contract not deployed on Base returns not-found error","Missing required transaction fields returns validation error"],"whenToPreferThis":"Use this endpoint when you need to estimate gas costs for transactions specifically on the Base L2 network before submitting them, especially for smart contract interactions. Prefer this over generic gas trackers when you need a computation-specific estimate rather than a network-wide average.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-16T00:31:06.276Z","isFirstParty":false}