{"uid":"cap_5g8nn3cEF1zUPdhCa3hDA","slug":"chainread-gas-fees-c1ebb423","name":"ChainRead Gas & Fees","description":"Cheap EVM read utilities for AI agents on Base and Ethereum mainnet: gas and fees, blocks, balances, ERC-20 metadata, contract inspection, transaction status, ENS/Basename resolution, bulk balances. No API key: pay USDC on Base per call via x402.","url":"https://chainread.imac2014ville.workers.dev/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":{"chain":{"enum":["base","ethereum"],"type":"string","description":"Chain to read (default base)"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"ok":true,"chain":"base","ethUsd":2450.3,"estimates":{"ethTransfer":{"costEth":1.2e-7,"costUsd":0.0003,"gasUnits":21000}},"baseFeeGwei":0.0053,"priorityFeeGwei":{"low":0.001,"fast":0.002,"standard":0.0012}}},"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_0Xlt2pyFBUyL59Olwa4qN","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 gas price, base fee, priority fee tiers, ETH/USD price, and estimated transaction costs for Base or Ethereum mainnet","exampleAgentPrompt":"What are the current gas fees on Base — give me the base fee, priority fee tiers, and how much a standard ETH transfer would cost in USD right now?","exampleUseCases":[{"title":"Pre-transaction gas check","prompt":"Before I send this ETH transfer, check the current gas fees on Base and tell me what it'll cost me in USD — and which priority level I should use for a standard confirmation speed."},{"title":"Cross-chain fee comparison","prompt":"What are the gas fees on Ethereum mainnet right now? Give me the base fee and how much a simple ETH transfer would cost in both ETH and USD."},{"title":"Gas price monitoring alert","prompt":"Check the current gas price on Base for me — I want to know if the base fee is below 0.01 gwei so I can decide whether to submit my transaction now or wait."}],"resultDescription":"A JSON object containing: the chain queried, current ETH/USD price, base fee in gwei, priority fee estimates (low/standard/fast in gwei), and per-operation cost estimates (gas units, cost in ETH, cost in USD) for common transaction types like ETH transfers.","failureModes":["Invalid chain parameter value (not 'base' or 'ethereum') returns an error","RPC node outage may cause stale or unavailable fee data","Payment failure (insufficient USDC or x402 protocol error) blocks the request","Network congestion may cause response latency spikes"],"whenToPreferThis":"Use this endpoint when your agent needs real-time EVM gas pricing data for Base or Ethereum mainnet without provisioning an API key — ideal for cost estimation before submitting transactions, UX display of current fees, or dynamic gas strategy decisions. Prefer this over general blockchain RPC calls when you want a clean, pre-computed fee estimate in USD with tiered priority levels for $0.001 USDC per call.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-10T12:35:13.789Z","isFirstParty":false,"canonicalSlug":"chainread-gas-fees-c1ebb423"}