{"uid":"cap_Lcovctdk6Yz9qjO2tLSvk","slug":"synapse-api-sonic-gas-estimator-b7936c5b","name":"Synapse API — Sonic Gas Estimator","description":"High-speed API suite for AI processing, web scraping, and smart data utilities across 57+ blockchain networks. Pay-per-call via x402.","url":"https://synapse-api-brown.vercel.app/api/sonic/gas/estimate","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"to":{"type":"string"},"data":{"type":"string"},"from":{"type":"string"},"value":{"type":"string"}}},"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_iBykvEwcSFX6P_uETsrn4","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":"Estimates gas cost for a transaction on the Sonic blockchain network before sending it","exampleAgentPrompt":"Estimate the gas needed for a Sonic transaction from 0xABC...123 to 0xDEF...456 with calldata 0xa9059cbb... and value 0.0 ETH before I send it.","exampleUseCases":[{"title":"Pre-flight DeFi swap gas check","prompt":"Before I submit this token swap on Sonic, estimate the gas — sender is 0x1234...abcd, recipient contract is 0x5678...ef01, calldata is 0x38ed1739..., and value is 0."},{"title":"Smart contract deployment cost preview","prompt":"Can you estimate how much gas it'll cost to deploy my contract on Sonic? From address 0xAAAA...1111, no recipient (contract creation), here's the bytecode: 0x6080604052..."},{"title":"Safe transaction fee validation","prompt":"I want to know the gas estimate for sending 1 ETH on Sonic from 0xBBBB...2222 to 0xCCCC...3333 with no calldata — just a plain transfer."}],"resultDescription":"Returns an estimated gas amount (in gas units) for the described transaction on the Sonic network, allowing the caller to assess fees and decide whether to proceed with submission.","failureModes":["Invalid or malformed address in 'to' or 'from' fields returns an error","Invalid hex data in the 'data' field causes parsing failure","Sonic network node unavailability leads to timeout or 503 error","Missing required fields may return a validation error","Simulated transaction that would revert may return an error or revert reason"],"whenToPreferThis":"Use this endpoint when you specifically need gas estimation on the Sonic blockchain network (not Ethereum mainnet or other EVM chains). It is appropriate when you want a pre-flight fee check before executing a transaction, to avoid overpaying or having transactions fail due to insufficient gas. Prefer this over generic Ethereum gas estimators when your transaction targets the Sonic network.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T00:42:42.878Z","isFirstParty":false}