{"uid":"cap_h_WoRySb9g-tHRRuagfq7","slug":"synapse-api-avalanche-gas-estimator-9538048f","name":"Synapse API — Avalanche 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/avalanche/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_QnKyy34H82Ci55SAT7EeP","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 Avalanche blockchain network given sender, recipient, value, and calldata.","exampleAgentPrompt":"Estimate the gas needed for a transaction on Avalanche from address 0xAbC...123 to contract 0xDeF...456 with calldata 0xa9059cbb... and a value of 0 AVAX.","exampleUseCases":[{"title":"Pre-flight DeFi swap cost check","prompt":"Before I submit this swap on Avalanche, estimate the gas for a transaction from my wallet 0xAbC...123 to the Trader Joe router at 0xDeF...456 with this calldata 0x38ed1739... and 0 value so I know if it's worth it at current gas prices."},{"title":"Smart contract deployment gas forecast","prompt":"I'm about to deploy a new ERC-20 contract on Avalanche — can you estimate how much gas it'll take using my deployer address 0x111...aaa as the sender, no recipient, and this bytecode as the data field?"},{"title":"AVAX native transfer fee estimation","prompt":"How much gas will it cost to send 2 AVAX from 0x222...bbb to 0x333...ccc on the Avalanche network? Just a plain transfer, no extra data."}],"resultDescription":"Returns an estimated gas unit amount for the described Avalanche transaction, allowing the caller to predict fees before broadcasting the transaction to the network.","failureModes":["Invalid or malformed Ethereum-style address in 'to' or 'from' fields — returns error","Malformed hex string in 'data' field — parsing error","Transaction would revert on-chain (e.g. insufficient balance, failed require) — gas estimation may fail or return error","Network connectivity issues with Avalanche RPC — timeout or upstream error","Missing required fields — validation error"],"whenToPreferThis":"Use this endpoint when you need a quick, pay-per-call gas estimate specifically for the Avalanche network without managing your own RPC infrastructure. It's ideal for agents that need to pre-check transaction costs before execution, especially in multi-chain workflows where Avalanche is one of many supported chains.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T19:07:10.072Z","isFirstParty":false}