{"uid":"cap_ByX0zEnP7Ek9h9ox3y5ZB","slug":"402rpc-ethereum-gas-price-oracle-28495d58","name":"402rpc Ethereum Gas Price Oracle","description":"Ethereum mainnet gas now, from an independently operated full node: latest block, base fee and the priority fees paid in the last 20 blocks (10th, 50th, 90th percentile), with a suggested max fee for slow, normal and fast inclusion in gwei. Use it before sending a transaction or to time on-chain activity.","url":"https://402rpc.com/v1/eth/gas?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","properties":{}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","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":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_1uIlprEMkNbEGwqdk2LoR","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns real-time Ethereum mainnet gas prices including latest block, base fee, historical priority fee percentiles (10th/50th/90th) over the last 20 blocks, and suggested max fees for slow/normal/fast transaction inclusion — all in gwei.","exampleAgentPrompt":"What's the current Ethereum gas price right now — give me the base fee, priority fees, and the suggested max fee for a normal-speed transaction in gwei?","exampleUseCases":[{"title":"Pre-transaction gas check before DeFi swap","prompt":"Before I send this Uniswap swap, what's the current Ethereum gas price and what max fee should I use for normal-speed inclusion?"},{"title":"Timing on-chain mint for low gas","prompt":"I'm about to mint an NFT on Ethereum mainnet — can you check the current base fee and priority fee percentiles so I can decide if gas is cheap enough right now?"},{"title":"Automated gas monitoring for trading bot","prompt":"Pull the latest Ethereum gas data including the slow, normal, and fast max fee suggestions so my trading bot can decide whether to submit a transaction this block."}],"resultDescription":"A JSON object containing: the latest Ethereum block number, current base fee in gwei, 10th/50th/90th percentile priority fees from the last 20 blocks in gwei, and three suggested max fee values (slow, normal, fast) for transaction inclusion — all sourced live from an independent full node.","failureModes":["Full node temporarily out of sync — may return slightly stale block data","Payment not processed — returns 402 Payment Required if x402 micropayment fails","Node connectivity issues — may return 5xx error during network disruption","Rate limiting if payment protocol fails to complete"],"whenToPreferThis":"Choose this endpoint when you need a neutral, independently operated Ethereum gas oracle not tied to a third-party aggregator or centralized provider. Ideal for agents that need real-time gwei estimates directly from a full node before submitting transactions, or for timing on-chain activity based on recent priority fee history.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-15T06:30:23.551Z","isFirstParty":false,"canonicalSlug":"402rpc-ethereum-gas-price-oracle-28495d58"}