{"uid":"cap_FLv1XmsCExz_aI1mZ8YUr","slug":"multi-chain-l2-gas-price-oracle-e5a90ca5","name":"Multi-Chain L2 Gas Price Oracle","description":"Live gas price across Base, Arbitrum, Optimism and Polygon in ONE call — cheapest-chain routing for agents that settle or mint on L2s","url":"https://money-reactor.makar52nn2016.workers.dev/api/gas-multi?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"input":{"type":"object","properties":{"queryParams":{"type":"object","properties":{}}}},"output":{"type":"object","properties":{"example":{"base":{"gasPriceGwei":0.006},"polygon":{"gasPriceGwei":30},"arbitrum":{"gasPriceGwei":0.01},"optimism":{"gasPriceGwei":0.001}}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.05","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":"$0.05/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_X1Z_hRXsVGqdZY6sNXLUw","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.05","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns live gas prices in Gwei for Base, Arbitrum, Optimism, and Polygon in a single API call with cheapest-chain routing guidance","exampleAgentPrompt":"Before I mint this NFT, check the live gas prices across Base, Arbitrum, Optimism, and Polygon and tell me which chain is the cheapest right now.","exampleUseCases":[{"title":"Cheapest chain for NFT minting","prompt":"I want to mint a batch of NFTs — can you check the current gas prices on Base, Arbitrum, Optimism, and Polygon and tell me which chain will cost the least right now?"},{"title":"DeFi settlement routing","prompt":"I need to settle a stablecoin payment on an L2 — pull the live gas prices across all four major L2s and route me to the cheapest one."},{"title":"Pre-trade gas cost check","prompt":"Before my trading bot executes its next swap, check the gas fees on Base, Arbitrum, Optimism, and Polygon and let me know if any of them are unusually expensive right now."}],"resultDescription":"A JSON object with one key per supported chain (base, polygon, arbitrum, optimism), each containing the current gas price in Gwei — e.g. {\"base\":{\"gasPriceGwei\":0.006},\"polygon\":{\"gasPriceGwei\":30},\"arbitrum\":{\"gasPriceGwei\":0.01},\"optimism\":{\"gasPriceGwei\":0.001}}. Enables agents to immediately identify the cheapest chain for a transaction.","failureModes":["RPC provider outage for one or more chains may result in missing or stale gas data for that chain","Payment not received (x402) returns 402 status before any gas data is returned","Cloudflare Worker cold-start may add latency on first call","Network congestion spikes between request and agent decision may render the price stale"],"whenToPreferThis":"Choose this endpoint when an agent needs to make a cross-chain routing decision and requires a single call covering all four major L2 networks simultaneously, rather than making four separate RPC or oracle calls. Ideal for DeFi agents, minting bots, or payment routers that need to minimize gas costs dynamically before executing an on-chain action.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-30T12:31:46.208Z","isFirstParty":false,"canonicalSlug":"multi-chain-l2-gas-price-oracle-e5a90ca5"}