{"uid":"cap_O_u9Z7v-GDW2wzh3WXa8D","slug":"md-fastdb-in-gas-price-oracle-86ab6feb","name":"md.fastdb.in Gas Price Oracle","description":"Live gas on Ethereum, Base, Arbitrum, Optimism, Polygon — base fee, priority fee tiers, and USD transfer cost, straight from chain RPC.","url":"https://md.fastdb.in/pulse/gas","method":"POST","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method","bodyType","body"],"properties":{"body":{"properties":{}},"type":{"type":"string","const":"http"},"method":{"enum":["POST"],"type":"string"},"bodyType":{"enum":["json","form-data","text"],"type":"string"}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"at":"2026-07-17T15:00:00.000Z","gas":{"base":{"chain":"base","nativeUsd":1818.32,"baseFeeGwei":0.005,"blockNumber":48755195,"priorityFee":{"fastGwei":0.019,"slowGwei":0.0001,"standardGwei":0.0011},"gasPriceGwei":0.006,"nativeSymbol":"ETH","transferCostUsd":0.0002291}},"chains":["base"]}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"registry","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_V0VHL0PlPQaC-96snCNcY","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns live gas data for Ethereum, Base, Arbitrum, Optimism, and Polygon — including base fee, priority fee tiers (slow/standard/fast), and USD transfer cost pulled directly from chain RPC.","exampleAgentPrompt":"What are the current gas fees on Base right now — give me the base fee, the fast priority fee in gwei, and how much a simple ETH transfer would cost in USD?","exampleUseCases":null,"resultDescription":"Returns a JSON object with a timestamp, the queried chain(s), native token USD price, current base fee in gwei, gas price in gwei, slow/standard/fast priority fee tiers in gwei, and the estimated USD cost of a standard ETH transfer for each requested chain.","failureModes":["Unsupported chain name returns error or empty gas object","RPC node temporarily unavailable causing stale or missing data","Network congestion may cause slight lag in fee data","Invalid POST body format returns 400 error","Chain field missing from request may default to one chain or return error"],"whenToPreferThis":"Prefer this endpoint when you need real-time, multi-chain gas data from live RPC nodes rather than third-party aggregators, especially when you need both gwei-denominated fees and USD cost estimates in a single call. Ideal for agents making transaction cost decisions, displaying gas to users, or automating DeFi workflows that are cost-sensitive across multiple EVM chains.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T00:42:30.655Z","isFirstParty":false}