{"uid":"cap_6jOv3X3etgjsrSP6JuO4F","slug":"multichain-rpc-gas-price-lookup-e7481779","name":"Multichain RPC Gas Price Lookup","description":"Cheap, factual EVM chain lookups priced per call in USDC. Base, Polygon, Arbitrum, Optimism and Ethereum.","url":"https://multichain-rpc.clankerceo.workers.dev/gas","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method","queryParams"],"properties":{"type":{"enum":["http"],"type":"string"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","properties":{"chain":{"type":"string"}}}}},"output":{"type":"object","required":["type"],"properties":{"type":{"enum":["json"],"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"chain":"base","base_fee_gwei":0.01,"gas_price_gwei":0.011,"simple_transfer_cost":{"gas":21000,"amount":"0.0000002","symbol":"ETH"}}},"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_V2njwDwZ7k9YAsxQyC7da","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 live EIP-1559 gas prices (base fee, low/medium/high priority tiers in gwei) and estimated simple transfer cost for a specified EVM chain.","exampleAgentPrompt":"What are the current gas prices on Base right now — give me the EIP-1559 base fee and what a simple transfer would cost in ETH?","exampleUseCases":[{"title":"Pre-transaction gas cost check","prompt":"Before I send this token transfer on Polygon, what's the current gas price and how much would a simple transfer cost me right now?"},{"title":"Cheapest chain gas comparison","prompt":"I want to find the cheapest chain to transact on — can you check current gas prices on Base, Arbitrum, and Optimism so I can compare?"},{"title":"DeFi bot fee monitoring","prompt":"Check the current EIP-1559 base fee and priority tiers on Ethereum mainnet so I can decide if it's worth executing my trade now or wait for lower fees."}],"resultDescription":"A JSON object containing the chain name, current base fee in gwei, overall gas price in gwei, and a simple transfer cost breakdown including gas units (21000), the estimated cost amount in native token, and the token symbol (e.g. ETH, MATIC).","failureModes":["Unsupported or misspelled chain name returns an error or empty result","RPC node temporarily unavailable causes stale or missing data","Network congestion may cause slight lag in base fee accuracy","Missing chain query parameter may default to a specific chain or return an error"],"whenToPreferThis":"Choose this endpoint when you need real-time EIP-1559 gas data across multiple EVM-compatible chains (Base, Polygon, Arbitrum, Optimism, Ethereum) in a single lightweight call, especially when you want both the fee tiers and a human-readable transfer cost estimate in one response. Prefer it over raw RPC calls when you want pre-parsed gwei values without decoding hex or handling RPC provider authentication.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T00:46:09.249Z","isFirstParty":false}