{"uid":"cap_H1P_CmstjvuUSQnAcHAmV","slug":"basebuilder-defi-gas-price-predictor-9e77c0d7","name":"BaseBuilder DeFi Gas Price Predictor","description":"BaseBuilder Defi API hub - 22 paid endpoints","url":"https://bb-defi.vercel.app/api/gas/predict","method":"POST","headers":{},"bodySchema":null,"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.10757","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":"$0.10757/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.10757","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.10757","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_aLU7YFZMDC2UDmiVLCxGq","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.10757","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Predicts Ethereum/Base network gas prices to help users time transactions for optimal cost","exampleAgentPrompt":"What's the predicted gas price on the Base network right now? I want to know if I should submit my DeFi swap transaction now or wait for fees to drop.","exampleUseCases":null,"resultDescription":"Returns a predicted gas price (in gwei or wei) for the Base/Ethereum network, likely including fast/standard/slow tiers, a confidence score or recommendation, and possibly a suggested wait time for lower fees.","failureModes":["Network data unavailable — returns 503 if upstream chain data cannot be fetched","Invalid chain/network identifier — returns 400 with validation error","Insufficient payment — returns 402 if x402 payment header is missing or underpaid","Rate limit exceeded — returns 429 if too many requests","Prediction model timeout — returns 504 if gas oracle takes too long"],"whenToPreferThis":"Use this endpoint when an AI agent needs to advise a user on optimal transaction timing on the Base network or Ethereum, especially before executing DeFi swaps, NFT mints, or smart contract interactions where gas cost matters. Prefer this over static gas oracles when you need forward-looking prediction rather than a current snapshot.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T12:43:11.553Z","isFirstParty":false}