{"uid":"cap__dyEsKz_CwU4wm1qR4_KW","slug":"synthora-gas-oracle-multi-chain-d4242406","name":"SYNTHORA Gas Oracle Multi-Chain","description":"SYNTHORA gas-oracle-multi: gas price across 5 chains (ethereum, base, arbitrum, optimism, polygon), each VERIFIED by two independent public RPCs with divergence report — a single RPC can lie or lag; dual-verified is what you time transactions with. Free public RPCs, no key. $0.005 USDC x402 Base.","url":"https://api.hergertsynthora.com/v1/gas-oracle-multi","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"input":{"type":"string","description":"SYNTHORA gas-oracle-multi: gas price across 5 chains (ethereum, base, arbitrum, optimism, polygon), each VERIFIED by two independent public RPCs with divergence report — a single RPC can lie or lag; d"}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.03","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":"$0.03/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.03","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.03","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_ywu9tHoMTJneOKEcZwzcj","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.03","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns dual-verified gas prices across Ethereum, Base, Arbitrum, Optimism, and Polygon with divergence reporting between two independent RPCs per chain","exampleAgentPrompt":"What are the current gas prices across Ethereum, Base, Arbitrum, Optimism, and Polygon right now — verified by two independent RPCs so I can trust the numbers before I time my transaction?","exampleUseCases":[{"title":"Optimal transaction timing for DeFi","prompt":"Before I submit this swap on Arbitrum, can you check the current dual-verified gas prices across Ethereum, Base, Arbitrum, Optimism, and Polygon so I can decide if now is a good time or if I should wait?"},{"title":"Cross-chain bridge cost comparison","prompt":"I need to bridge funds and want to pick the cheapest chain right now — can you pull the verified gas prices across all five major chains (Ethereum, Base, Arbitrum, Optimism, Polygon) and tell me which has the lowest fees?"},{"title":"Gas price divergence alert monitoring","prompt":"Check the gas prices on all five EVM chains using dual-RPC verification and tell me if any of the two RPC sources are diverging significantly — I want to know if any single RPC is lagging or giving bad data."}],"resultDescription":"Returns current gas prices for each of the five chains (Ethereum, Base, Arbitrum, Optimism, Polygon), each figure verified by two independent public RPC endpoints. Also includes a divergence report indicating how much the two RPC sources differ per chain, allowing the caller to assess data reliability and detect lagging or manipulated RPCs.","failureModes":["Both RPCs for a chain are unavailable — chain data missing or partial result returned","High divergence between the two RPCs indicating one may be lagging or unreliable — divergence flag raised in report","Network timeout on public RPC endpoints causing slow or failed response","x402 payment not accepted or insufficient USDC balance — 402 Payment Required error","Invalid or malformed POST body — 400 Bad Request"],"whenToPreferThis":"Choose this endpoint when you need trustworthy, cross-chain gas price data backed by dual-RPC verification rather than a single potentially-lagging source. Ideal for DeFi agents timing transactions across L1/L2 networks, bridge cost comparisons, or any workflow where a single RPC lying or lagging would cause financial harm. Preferable over single-RPC oracles or chain-specific gas APIs when operating across all five major EVM chains simultaneously.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T12:32:07.083Z","isFirstParty":false}