{"uid":"cap_zGQcub8Pm9bGSWlkOKiH8","slug":"base-network-gas-price-feed-2c8a28b1","name":"Base Network Gas Price Feed","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/v1/crypto/gas?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_VrtybnhVCjJgkfwPCuFe-","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 real-time Base L2 gas prices across slow/standard/fast tiers with USD cost estimates for a configurable gas limit.","exampleAgentPrompt":"Before you submit that Base transaction, check the current gas prices — I want the slow, standard, and fast tier costs in USD and the recommended EIP-1559 fields for a standard ETH transfer (21000 gas units).","exampleUseCases":[{"title":"Pre-flight gas check before onchain payment","prompt":"Before you send that USDC transfer on Base, check the current gas price and tell me how much it'll cost in USD at the standard tier — I only want to proceed if fees are under $0.01."},{"title":"Smart contract deployment cost estimate","prompt":"I'm about to deploy a contract on Base that uses about 500000 gas — what will that cost me in USD right now across the slow, standard, and fast gas tiers?"},{"title":"Congestion monitor for DeFi bot","prompt":"Check if Base is congested right now and give me the current base fee in gwei and the recommended gas tier — my arbitrage bot needs to decide whether to submit a trade."}],"resultDescription":"A JSON object containing the current Base L2 block number, chain ID (8453), base fee and gas price in gwei and wei hex, per-tier breakdown (slow/standard/fast) with max_fee_gwei, max_priority_fee_gwei, and est_cost_usd, a congestion score (0–1), a recommended_tier string, ready-to-use EIP-1559 tx_fields in hex, and an updated_at timestamp.","failureModes":["RPC unreachable — Base mainnet node may be temporarily unavailable, returning a 5xx error","Payment failure — x402 USDC micropayment on Base not settled, returns 402 with payment instructions","Invalid gas_limit — value below 21000 or above 30000000 returns a 400 validation error","Stale data — response may reflect a block that is a few seconds old during high-traffic periods"],"whenToPreferThis":"Choose this endpoint when your agent needs real-time, tier-stratified EIP-1559 gas data specifically for the Base L2 network, particularly when you need USD cost estimates and hex-formatted tx_fields ready to plug into a transaction object. Prefer it over generic Ethereum gas APIs when transacting on Base, as it sources directly from Base mainnet RPC. No API key management required — pays per call via x402 USDC micropayment, making it ideal for autonomous agents that self-fund.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-31T18:42:12.032Z","isFirstParty":false,"canonicalSlug":"base-network-gas-price-feed-2c8a28b1"}