{"uid":"cap_e6azW_vvuTy2UTei3wORR","slug":"synapse-api-x-layer-gas-estimator-394893c9","name":"Synapse API — X Layer 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/xlayer/gas/estimate?utm_source=zero.xyz","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_ZT8wfwWGTuz8pYCwzSm3g","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 the gas cost for a transaction on the X Layer (OKX Layer 2) blockchain network","exampleAgentPrompt":"Estimate the gas needed to send 0.5 ETH from 0xAbC123... to 0xDeF456... on the X Layer network, with no calldata.","exampleUseCases":[{"title":"Pre-flight cost check for token transfer","prompt":"Before I send 100 USDC from my wallet 0xAbC123... to 0xDeF456... on X Layer, can you estimate how much gas that transaction will use?"},{"title":"Smart contract interaction cost estimate","prompt":"I want to call a smart contract on X Layer — the contract is at 0xContract123... and here's the encoded calldata: 0xa9059cbb... Can you estimate the gas cost before I actually submit it?"},{"title":"Budget planning for batch operations","prompt":"I'm planning to run several transactions on X Layer from 0xMySender... to 0xMyContract... with this data payload: 0xabcdef.... Can you estimate the gas per call so I can budget how many I can afford?"}],"resultDescription":"Returns an estimated gas amount (in gas units) required to execute the specified transaction on the X Layer network, helping the caller assess cost before submitting the transaction on-chain.","failureModes":["Invalid or malformed Ethereum address in 'to' or 'from' fields returns an error","Invalid hex-encoded 'data' field causes parsing failure","Transaction simulation fails if the contract logic reverts, returning a revert error","Missing required fields may return a 400 bad request","Network unavailability or RPC issues may cause a timeout or 503 error"],"whenToPreferThis":"Choose this endpoint when you need to estimate gas costs specifically on the X Layer (OKX Layer 2) network before committing to a transaction. It is ideal for pre-flight checks, budgeting, and avoiding failed transactions due to insufficient gas. Use it over generic gas oracles when you need simulation-based estimates for a specific sender, recipient, and calldata combination on X Layer.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-14T18:32:13.665Z","isFirstParty":false,"canonicalSlug":"synapse-api-x-layer-gas-estimator-394893c9"}