{"uid":"cap_2xw4n02ZlK5SYLYvG_EBm","slug":"synapse-api-bob-gas-estimator-d39454c6","name":"Synapse API — Bob 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/bob/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_9T1eubtTVdsd7toLp0Msc","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 blockchain transaction on the Bob network given sender, recipient, data payload, and value.","exampleAgentPrompt":"Can you estimate the gas needed for a transaction on the Bob network where 0x1234...abcd sends 0.1 ETH to 0xdead...beef with no extra data?","exampleUseCases":[{"title":"Pre-flight gas check for ETH transfer","prompt":"Before I send 0.5 ETH from my wallet 0xAAA...111 to 0xBBB...222 on the Bob network, can you estimate how much gas it will cost so I know if I have enough to cover fees?"},{"title":"Smart contract call cost estimation","prompt":"I want to call a smart contract at 0xContract...123 on Bob — the calldata is 0xa9059cbb...000 and I'm sending from 0xMywallet...456 with 0 ETH value. What's the gas estimate?"},{"title":"Budget planning for batch transactions","prompt":"I'm planning to run several transactions on Bob and need to budget for gas. Can you estimate the gas for a transaction from 0xSender...789 to 0xReceiver...321 with a value of 0.01 ETH and data 0x?"}],"resultDescription":"Returns an estimated gas amount (in gas units) required to execute the specified transaction on the Bob network, enabling callers to budget fees before broadcasting the transaction.","failureModes":["Invalid or malformed Ethereum address in 'to' or 'from' fields returns an error","Invalid hex string in 'data' field causes a parse error","Network unavailability or RPC timeout results in a failure response","Unsupported transaction type or out-of-range value may cause estimation failure","Missing required fields may return a validation error"],"whenToPreferThis":"Choose this endpoint when you need a quick, pay-per-call gas estimate specifically for the Bob network without maintaining your own RPC node or paying for a full node provider subscription. Ideal for agents that need on-demand, lightweight fee estimation before submitting transactions.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-16T06:52:36.229Z","isFirstParty":false,"canonicalSlug":"synapse-api-bob-gas-estimator-d39454c6"}