{"uid":"cap_UrnMZ5JFB0OavxiqAZWZX","slug":"x402node-multi-chain-gas-price-tracker-6fdef0fd","name":"x402node Multi-Chain Gas Price Tracker","description":"Current gas price across Ethereum, Base, Arbitrum, Optimism and Polygon in one call, returns gwei gas price and latest base fee per chain. multichain gas price, gas fee comparison, gwei, l2 gas tracker, cheapest chain for transaction Accepts payment on Base or Solana — either network works.","url":"https://api.x402node.dev/chain/multi-gas?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","properties":{"chains":{"type":"string","description":"Comma list to limit chains, default all five"}}}},"additionalProperties":false}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.006","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"settled","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":"$0.006/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.006","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.006","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_ela7CvtM42cGYifHdah1C","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.006","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns current gas prices (gwei) and latest base fee for Ethereum, Base, Arbitrum, Optimism, and Polygon in a single API call","exampleAgentPrompt":"What are the current gas prices across Ethereum, Base, Arbitrum, Optimism, and Polygon right now — and which chain has the lowest fees?","exampleUseCases":null,"resultDescription":"Returns an object with gas price data per chain, including gwei gas price and latest base fee for each of: Ethereum, Base, Arbitrum, Optimism, and Polygon — enabling direct comparison of transaction costs across networks.","failureModes":["Upstream RPC node unavailable for one or more chains — partial or degraded response","Rate limit exceeded — HTTP 429","Payment not received or invalid x402 payment header — HTTP 402","Network timeout if any chain RPC is slow — may return stale or missing data for affected chain"],"whenToPreferThis":"Use this endpoint when you need a single-call snapshot of gas prices across all major EVM chains simultaneously — ideal for routing transactions to the cheapest chain, displaying gas dashboards, or deciding when to submit a transaction. Prefer this over per-chain gas endpoints when you need cross-chain comparison without multiple API calls.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T06:30:57.136Z","isFirstParty":false,"canonicalSlug":"x402node-multi-chain-gas-price-tracker-6fdef0fd"}