{"uid":"cap_vg6etxhncXzT0PzEQqzEC","slug":"dt0ur-online-multi-chain-gas-price-comparator-9f5c4af2","name":"dt0ur.online Multi-Chain Gas Price Comparator","description":"Live gas prices across base, ethereum, arbitrum, optimism, polygon, bsc, sorted cheapest first: base fee and gas price in gwei, plus the USD cost of a native transfer and of an ERC-20 transfer on each chain, so an agent can pick where to transact.","url":"https://dt0ur.online/api/onchain/gas?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"chains":{"type":"array","items":{"enum":["base","ethereum","arbitrum","optimism","polygon","bsc"],"type":"string"},"description":"Chains to compare (default: all)"}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_gaI-LKfiQyaF3dj66loO8","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns live base fees, gas prices (in gwei), and USD costs for native and ERC-20 transfers across up to 6 EVM chains, sorted cheapest-first so an agent can pick the optimal chain to transact on.","exampleAgentPrompt":"Check live gas prices across Base, Ethereum, Arbitrum, Optimism, Polygon, and BSC right now — show me the base fee and gas price in gwei for each, plus how much a native transfer and an ERC-20 transfer would cost in USD, sorted from cheapest to most expensive.","exampleUseCases":[{"title":"Cheapest chain for token bridging","prompt":"I need to bridge USDC somewhere — check current gas costs on Base, Arbitrum, and Optimism and tell me which one is cheapest for an ERC-20 transfer right now."},{"title":"Pre-trade cost check for DeFi bot","prompt":"Before I execute this swap, pull live gas prices on Ethereum and Polygon and tell me the USD cost of an ERC-20 transfer on each so I can decide where to route it."},{"title":"Gas cost monitoring dashboard","prompt":"Fetch real-time gas prices across all supported chains — Base, Ethereum, Arbitrum, Optimism, Polygon, and BSC — and show me the gwei and USD costs ranked cheapest first so I can update my dashboard."}],"resultDescription":"A list of chains sorted cheapest-first, each with: base fee (gwei), gas price (gwei), estimated USD cost of a native token transfer, and estimated USD cost of an ERC-20 token transfer — giving an agent everything needed to route a transaction to the lowest-cost network.","failureModes":["Unknown chain enum value passed in the chains array returns a validation error","RPC or upstream node unavailability may cause stale or missing data for a specific chain","Network congestion spikes may make the snapshot slightly outdated by execution time","Empty chains array or malformed JSON body returns an input validation error","Payment failure (x402 protocol) blocks the request before any data is returned"],"whenToPreferThis":"Use this endpoint when an agent needs to programmatically compare real-time gas costs across multiple EVM chains to make routing or timing decisions. It is ideal for DeFi agents, bridging bots, or wallet apps that need a single call to get a ranked, USD-denominated gas cost comparison rather than querying each chain's RPC individually. Prefer this over chain-specific gas oracles when multi-chain comparison is required in one shot.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-01T00:44:27.105Z","isFirstParty":false,"canonicalSlug":"dt0ur-online-multi-chain-gas-price-comparator-9f5c4af2"}