{"uid":"cap_UKa5qD908468l77iIs5tz","slug":"free-asset-radar-x402-evm-eth-call-6a4bbfef","name":"Free Asset Radar x402 – EVM ETH Call","description":"Stable edge-hosted x402 utilities for autonomous agents.","url":"https://free-asset-radar-x402.besenok2018.workers.dev/api/x402/evm-eth-call?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"required":{"type":"string"},"properties":{"type":"string"}}},"responseSchema":{"type":"json","example":{"result":"0x...","network":"base"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.003","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":"$0.003/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_tQ-c3pJu46cedvDY8CX9l","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.003","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Executes a read-only eth_call on an EVM-compatible network (defaulting to Base) and returns the raw hex result, billed via x402 micropayment at $0.003 USDC per call.","exampleAgentPrompt":"Run a read-only eth_call on the Base network for the contract at 0xAbCd...1234 with calldata 0xa9059cbb000... and give me the raw hex result.","exampleUseCases":[{"title":"Read ERC-20 token balance on-chain","prompt":"I need to check the USDC balance for wallet 0xDEAD...BEEF by calling the balanceOf function on the USDC contract at 0xA0b8...eB48 on Base — give me the raw hex result."},{"title":"Query DeFi pool reserve state","prompt":"Call the getReserves function on this Uniswap V2 pool contract 0x1234...5678 on Base and return the raw hex so I can decode the reserve amounts."},{"title":"Verify on-chain contract ownership","prompt":"Use an eth_call to read the owner() function from the NFT contract at 0xBEEF...CAFE on Base and tell me what hex address it returns."}],"resultDescription":"A JSON object containing 'result' (the raw hex-encoded return value from the contract call) and 'network' (the chain used, e.g. 'base'). No state is modified — this is strictly a read operation.","failureModes":["Invalid or malformed calldata returns an EVM revert or execution error","Contract address does not exist on the specified network returns empty result or error","Network identifier not supported returns a 400 or error response","Payment not processed (x402 flow failure) returns 402 Payment Required","Cloudflare Worker timeout on slow RPC response returns 504"],"whenToPreferThis":"Choose this endpoint when you need a quick, stateless, pay-per-call eth_call on Base or EVM-compatible chains without managing your own RPC node or API keys. Ideal for lightweight agents that need occasional on-chain reads billed via x402 micropayments at $0.003 USDC, especially when avoiding subscription RPC providers like Alchemy or Infura.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-03T06:34:56.418Z","isFirstParty":false,"canonicalSlug":"free-asset-radar-x402-evm-eth-call-6a4bbfef"}