{"uid":"cap_YzqHjdgM_GbNf3jVFjKny","slug":"basebuilder-defi-ethereum-gas-price-api-1da0ef9d","name":"BaseBuilder DeFi Ethereum Gas Price API","description":"BaseBuilder Defi API hub - 22 paid endpoints","url":"https://bb-defi.vercel.app/api/gas/ethereum","method":"POST","headers":{},"bodySchema":null,"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.149471","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":"$0.149471/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.149471","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.149471","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_CXqJ5Mp8xrUVwNpyCrq38","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.149471","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns current Ethereum network gas prices (e.g., base fee, priority fee, or gas estimates) via a paid API endpoint","exampleAgentPrompt":"What are the current Ethereum gas prices right now — give me the base fee and recommended priority fee in gwei so I can decide whether to submit my transaction.","exampleUseCases":null,"resultDescription":"Returns current Ethereum gas price data including base fee, slow/standard/fast priority fee tiers, and estimated transaction costs in gwei or wei, enabling the caller to choose an appropriate gas price for submitting on-chain transactions.","failureModes":["Payment not provided or insufficient — HTTP 402 returned requiring x402 USDC payment","Ethereum RPC node temporarily unavailable — upstream timeout or 503","Invalid request body format — 400 bad request","Rate limiting if payment not processed correctly"],"whenToPreferThis":"Choose this endpoint when you need real-time Ethereum gas price data for DeFi workflows, transaction cost estimation, or wallet UX, and are already operating in an x402 micropayment-enabled environment on Base/Ethereum. Useful when building agents that need to decide whether to submit a transaction based on current network conditions.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T12:33:13.495Z","isFirstParty":false}