{"uid":"cap_1XKO-Kf34qHlrNghWp4m-","slug":"evm-multi-chain-gas-comparison-a2604eee","name":"EVM Multi-Chain Gas Comparison","description":"Pay-per-call EVM chain data for agents: wallet snapshots, ERC-20 token profiles, spot prices, gas markets, transaction decode, and ENS resolution across major EVM chains (base, ethereum, arbitrum, optimism, polygon). Deterministic JSON, no RPC keys or node infra needed.","url":"https://chain.cyberwarex.com/gas-compare?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"properties":{"type":"string"}}},"responseSchema":{"type":"json","example":{"count":5,"chains":[{"chain":"base","native":"ETH","est_cost":{"swap_200k":{"usd":0.0035,"native":0.0000014},"transfer_21k":{"usd":0.00037,"native":1.5e-7}},"native_usd":2456.1,"base_fee_gwei":0.005,"gas_price_gwei":0.006,"priority_fee_gwei":{"p25":0.001,"p50":0.001,"p75":0.002}}],"cheapest":"base"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","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":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_QxOsQ8VPlDQmhdGor_TWx","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Compares current gas prices, base fees, priority fees, and estimated transaction costs across major EVM chains in a single call, identifying the cheapest chain.","exampleAgentPrompt":"Compare gas fees across Base, Ethereum, Arbitrum, Optimism, and Polygon right now — I want to know which chain is cheapest and what a swap and a token transfer would cost on each in USD.","exampleUseCases":[{"title":"Cheapest chain for DeFi swap","prompt":"I'm about to do a $200k swap — which EVM chain has the lowest gas fees right now and what would the swap actually cost me in USD on each one?"},{"title":"Cost-aware cross-chain routing","prompt":"Before I bridge and execute my transaction, tell me the current gas costs on Base, Arbitrum, Optimism, and Polygon so I can pick the cheapest network."},{"title":"Gas market monitoring dashboard","prompt":"Pull the latest gas prices, base fees, and priority fee percentiles for all major EVM chains and tell me which one is cheapest to transact on right now."}],"resultDescription":"Returns a JSON object listing all queried EVM chains with their current gas price, base fee, and priority fee percentiles (p25/p50/p75) in gwei, the native token's USD price, estimated costs for a standard token transfer (21k gas) and a swap (200k gas) in both USD and native units, and a 'cheapest' field identifying the lowest-cost chain.","failureModes":["Chain RPC unavailable or degraded — may return partial results or error for that chain","Payment not received or insufficient USDC — returns 402 Payment Required","Invalid or malformed request — returns 400 Bad Request","Gas oracle data momentarily stale — costs may lag real-time by a few seconds"],"whenToPreferThis":"Use this endpoint when you need a single-call cross-chain gas comparison without managing RPC keys or node infrastructure. Ideal for agents routing transactions to the cheapest EVM network, DeFi bots optimizing execution costs, or dashboards showing real-time multi-chain gas markets. Prefer this over querying individual chain gas endpoints separately when you need a unified cheapest-chain recommendation.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-01T06:31:06.137Z","isFirstParty":false,"canonicalSlug":"evm-multi-chain-gas-comparison-a2604eee"}