{"uid":"cap_iXMqVhz6ISJ2dkldQWgj7","slug":"base-network-gas-price-oracle-f098aea0","name":"Base Network Gas Price Oracle","description":"Pay-per-call crypto microdata for trading/onchain AI agents via x402 (USDC on Base): Base gas, token risk, balances, multi-venue prices, Hyperliquid book/funding, kimchi premium. No API keys.","url":"https://kr-x402-mvp.kgy5612.workers.dev/api/gas-price?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","properties":{"gas_limit":{"type":"integer","maximum":30000000,"minimum":21000,"examples":[21000,150000],"description":"Gas units to price (default 21000)"}},"additionalProperties":false}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"block":37000000,"chain":"base","tiers":{"fast":{"est_cost_usd":0.0007,"max_fee_gwei":0.025,"max_priority_fee_gwei":0.01},"slow":{"est_cost_usd":0.0005,"max_fee_gwei":0.006,"max_priority_fee_gwei":0.001},"standard":{"est_cost_usd":0.0005,"max_fee_gwei":0.011,"max_priority_fee_gwei":0.001}},"sources":["https://mainnet.base.org"],"chain_id":8453,"tx_fields":{"gas":"0x5208","type":"0x2","maxFeePerGas":"0xa7d8c0","maxPriorityFeePerGas":"0xf4240"},"congestion":0.42,"updated_at":"2026-10-29T13:30:00Z","base_fee_gwei":0.005,"gas_price_gwei":0.006,"recommended_tier":"standard","gas_price_wei_hex":"0x5b8d80","est_transfer_cost_eth":1.26e-7,"max_priority_fee_gwei":0.001,"max_priority_fee_wei_hex":"0xf4240"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","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":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_abe_zSBz3OQuu8hNmVbL8","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns current Base L2 gas prices (slow/standard/fast tiers) with USD cost estimates, congestion level, and EIP-1559 fee fields for a given gas limit","exampleAgentPrompt":"What are the current gas prices on Base right now — slow, standard, and fast tiers — with USD cost estimates for a standard ETH transfer (21000 gas)?","exampleUseCases":[{"title":"Optimize transaction gas before swap","prompt":"Before I submit this DEX swap on Base, check current gas prices and tell me if it's worth waiting — show me the slow, standard, and fast tiers with USD costs."},{"title":"Estimate gas cost for NFT mint","prompt":"I'm about to mint an NFT on Base that costs about 150000 gas — what would that cost me right now in USD at the standard gas tier?"},{"title":"Monitor Base congestion for bot timing","prompt":"Is the Base network congested right now? Give me the current congestion score and the recommended gas tier so I can decide when to fire my onchain transaction."}],"resultDescription":"A JSON object with the current Base block number, gas price in gwei and wei hex, EIP-1559 base fee, slow/standard/fast tier objects each containing max_fee_gwei, max_priority_fee_gwei, and est_cost_usd, a congestion score (0–1), the recommended tier string, tx_fields ready to use in an ethers.js/viem transaction, and an updated_at timestamp.","failureModes":["Base RPC node unavailable — upstream timeout or 5xx returned","Invalid gas_limit value outside 21000–30000000 range — 400 validation error","x402 payment not completed — 402 Payment Required returned before data is served","Stale data if Base RPC is lagging — updated_at timestamp may be behind real-time","Network congestion causing slow response from Base mainnet RPC"],"whenToPreferThis":"Choose this endpoint when your agent needs real-time Base L2 gas data without setting up an API key or RPC subscription — it pays per call via x402/USDC. Prefer it over raw RPC calls when you need pre-tiered slow/standard/fast estimates with USD costs already computed, EIP-1559 fields pre-formatted, and a congestion score in a single response. It is specifically useful for trading and onchain agents on Base that need to budget transaction costs or decide optimal timing.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-31T18:41:26.711Z","isFirstParty":false,"canonicalSlug":"base-network-gas-price-oracle-f098aea0"}