{"uid":"cap_4ULlPpqfQFEzmk25yU4Yz","slug":"synapse-api-plasma-gas-estimator-d0be4bc8","name":"Synapse API — Plasma 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/plasma/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_fP2LEOQyhyZxiebS6wLE8","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 an EVM transaction given to/from/data/value fields across supported blockchain networks","exampleAgentPrompt":"Estimate the gas needed to send 0.5 ETH from 0xAbC...123 to 0xDeF...456 with no calldata, so I know the fee before I broadcast the transaction.","exampleUseCases":[{"title":"Pre-flight gas check for ETH transfer","prompt":"Before I send 1 ETH from my wallet 0xAbc123... to 0xDef456..., can you estimate the gas cost so I know it'll go through without running out of gas?"},{"title":"Smart contract call cost forecast","prompt":"I want to call a contract at 0xContractAddr... with this calldata 0xa9059cbb... from 0xMyWallet... — can you estimate how much gas that will consume?"},{"title":"DeFi transaction fee planning","prompt":"I'm about to execute a swap on-chain — from address 0xTrader..., to 0xRouter..., with value 0 and this encoded data 0x38ed1739... — estimate the gas so I can set a proper gas limit."}],"resultDescription":"Returns a gas estimate (typically in gas units) for the described EVM transaction, allowing callers to set appropriate gas limits and estimate transaction fees before broadcasting.","failureModes":["Invalid or malformed address in 'to' or 'from' fields returns an error","Malformed hex 'data' field causes parsing failure","Unsupported network or chain context may return an error or zero estimate","Simulation failure if the transaction would revert on-chain","Empty or missing required fields may return a validation error"],"whenToPreferThis":"Use this endpoint when you need a quick, pay-per-call gas estimate for an EVM-compatible transaction before broadcasting it, especially when you don't want to run your own node or maintain RPC infrastructure. Prefer this over direct RPC calls when operating in an agentic or serverless context billed per call via x402.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-29T07:17:50.950Z","isFirstParty":false,"canonicalSlug":"synapse-api-plasma-gas-estimator-d0be4bc8"}