{"uid":"cap_fsoSVL5eaIzuwyWNuvlsw","slug":"coin-railz-gas-price-oracle-d59b410a","name":"Coin Railz Gas Price Oracle","description":"Real-time gas prices for multiple chains with USD cost estimates","url":"https://coinrailz.com/x402/gas-price-oracle","method":"POST","headers":{},"bodySchema":null,"responseSchema":{"type":"application/json","format":"json","example":{"result":"Service executed successfully","service":"gas-price-oracle","success":true,"timestamp":"2026-02-07T01:41:45.995Z"}},"example":{"request":{"agentId":"qa-test-agent-001","networks":["ethereum","base","arbitrum"],"agentName":"QA Test Agent"},"response":{"base":{"fast":{"usd":"$0.182","gwei":"5.00"},"slow":{"usd":"$0.037","gwei":"1.00"},"baseFee":"0.01","standard":{"usd":"$0.109","gwei":"3.00"}},"polygon":{"fast":{"usd":"$9.313","gwei":"256.31"},"slow":{"usd":"$9.168","gwei":"252.31"},"baseFee":"251.31","standard":{"usd":"$9.241","gwei":"254.31"}},"ethereum":{"fast":{"usd":"$0.187","gwei":"5.15"},"slow":{"usd":"$0.042","gwei":"1.15"},"baseFee":"0.15","standard":{"usd":"$0.114","gwei":"3.15"}},"timestamp":"2026-06-18T06:07:54.264Z"}},"exampleRequest":{"agentId":"qa-test-agent-001","networks":["ethereum","base","arbitrum"],"agentName":"QA Test Agent"},"tags":["x402"],"displayCostAmount":"0.1","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"settled","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":"$0.1/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.1","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.1","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_NNPOYCKKu_BUA32ZfWnWo","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.1","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns real-time gas prices across multiple blockchain networks with USD cost estimates for transaction planning","exampleAgentPrompt":"What are the current gas prices across Ethereum, Base, and Arbitrum right now, including how much a typical transaction would cost in USD on each chain?","exampleUseCases":null,"resultDescription":"A JSON object containing real-time gas prices for requested blockchain networks along with USD cost estimates per transaction, service name, success status, and a timestamp of when the data was fetched.","failureModes":["Unsupported chain identifier returns an error or empty result","Payment of 0.1 USDC not received — 402 payment required response","Upstream node provider unavailable causing stale or missing gas data","Invalid request body format returns a parsing error","Network congestion causing delayed response"],"whenToPreferThis":"Use this endpoint when an AI agent needs up-to-date gas fee data across multiple chains simultaneously with USD cost conversion already included, especially when building DeFi trading flows, transaction cost estimators, or cross-chain routing logic where knowing the cheapest chain to transact on matters.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T18:43:57.132Z","isFirstParty":false}