{"uid":"cap_GtJFGLBfndcXgVziuVGsm","slug":"the-stall-gas-prices-1e4104c6","name":"The Stall Gas Prices","description":"Current gas prices and EIP-1559 fee recommendations across 6 major EVM chains: Ethereum, Base, Arbitrum, Optimism, Polygon, BNB Chain. Returns base fee, priority fee percentiles (slow/standard/fast), and estimated ETH/MATIC/BNB cost for a standard 21k-gas transfer. All sourced from free public RPC endpoints — no API key needed. Use before sending on-chain transactions, estimating agent operating costs, or comparing chain fees for routing decisions.","url":"https://the-stall.intuitek.ai/cap/gas-prices","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"properties":{"type":"string"}}},"responseSchema":null,"example":{"request":{"properties":"ethereum"},"response":{"ts":"2026-06-21T05:19:52.455Z","chains":[{"type":"EIP-1559","symbol":"ETH","network":"Ethereum","legacy_gwei":0.122,"priority_fee":{"fast_gwei":0.396,"slow_gwei":0,"standard_gwei":0.004},"base_fee_gwei":0.112,"estimated_transfer_cost":{"note":"Cost = (base_fee + standard_priority) × 21000 gas","token":"ETH","gas_units":21000,"cost_in_token":0.000002436,"effective_gwei":0.116}},{"type":"EIP-1559","symbol":"ETH","network":"Base","legacy_gwei":0.006,"priority_fee":{"fast_gwei":0.008,"slow_gwei":0,"standard_gwei":0.001},"base_fee_gwei":0.005,"estimated_transfer_cost":{"note":"Cost = (base_fee + standard_priority) × 21000 gas","token":"ETH","gas_units":21000,"cost_in_token":1.26e-7,"effective_gwei":0.006}},{"type":"EIP-1559","symbol":"ETH","network":"Arbitrum One","legacy_gwei":0.02,"priority_fee":{"fast_gwei":0,"slow_gwei":0,"standard_gwei":0},"base_fee_gwei":0.02,"estimated_transfer_cost":{"note":"Cost = (base_fee + standard_priority) × 21000 gas","token":"ETH","gas_units":21000,"cost_in_token":4.2e-7,"effective_gwei":0.02}},{"type":"EIP-1559","symbol":"ETH","network":"Optimism","legacy_gwei":0.001,"priority_fee":{"fast_gwei":0.002,"slow_gwei":0,"standard_gwei":0},"base_fee_gwei":0,"estimated_transfer_cost":{"note":"Cost = (base_fee + standard_priority) × 21000 gas","token":"ETH","gas_units":21000,"cost_in_token":0,"effective_gwei":0}},{"type":"legacy","symbol":"MATIC","network":"Polygon","legacy_gwei":null,"priority_fee":{"fast_gwei":null,"slow_gwei":null,"standard_gwei":null},"base_fee_gwei":null,"estimated_transfer_cost":{"note":"Cost = (base_fee + standard_priority) × 21000 gas","token":"MATIC","gas_units":21000,"cost_in_token":0.000021,"effective_gwei":1}},{"type":"legacy","symbol":"BNB","network":"BNB Chain","legacy_gwei":null,"priority_fee":{"fast_gwei":null,"slow_gwei":null,"standard_gwei":null},"base_fee_gwei":null,"estimated_transfer_cost":{"note":"Cost = (base_fee + standard_priority) × 21000 gas","token":"BNB","gas_units":21000,"cost_in_token":0.000021,"effective_gwei":1}}]}},"exampleRequest":{"properties":"ethereum"},"tags":["x402"],"displayCostAmount":"0.005","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"settled","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":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.059","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.059","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_zFVz61SdM1YI1gVPzPeHF","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.059","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns current gas prices (network transaction fees) for blockchain or fuel networks, payable via USDC on Base mainnet with no API key required.","exampleAgentPrompt":"What are the current gas prices on Ethereum — give me the low, medium, and high fee tiers so I can decide when to send my transaction?","exampleUseCases":null,"resultDescription":"Returns current gas price data for a blockchain network, likely including fee tiers (slow/standard/fast or low/medium/high) expressed in gwei or similar units, enabling the caller to estimate transaction costs.","failureModes":["Network not supported — returns error if requested chain is not available","Payment failure — USDC payment on Base mainnet not processed, returns 402","Stale data — gas prices may lag real-time conditions by a few seconds to minutes","Malformed input — invalid property filter returns empty or error response"],"whenToPreferThis":"Choose this endpoint when you need current gas price estimates for blockchain transactions without setting up an API key or account, and you can pay $0.005 USDC per call via x402 on Base mainnet. Ideal for AI agents that need real-time fee data for transaction planning in a permissionless, pay-per-use model.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T00:58:28.585Z","isFirstParty":false}