{"uid":"cap_0yMa1xKNvQu4vb3gnpjDS","slug":"x402-toolbox-eth-call-1b56cc1f","name":"x402-toolbox ETH Call","description":"309 deterministic pay-per-call tools for AI agents over x402 (USDC, Base). No signup, no API key: the payment is the identity.","url":"https://x402-toolbox.shablony-pro.workers.dev/chain/eth-call?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"schema":{"type":"string"}}},"responseSchema":{"type":"json","example":{"ok":true,"paid":true}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","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":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_QXNYPfyyBdh2qgX8z6Pxi","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Executes a deterministic Ethereum eth_call (read-only smart contract call) on-chain, payable per-call via USDC over the x402 protocol with no API key required.","exampleAgentPrompt":"Can you call the balanceOf view function on the USDC ERC-20 contract at 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 for address 0x1234...abcd using the eth_call tool — pay the $0.002 fee automatically?","exampleUseCases":[{"title":"Check ERC-20 token balance on-chain","prompt":"Look up how many USDC tokens the wallet 0xABC...123 holds by calling the balanceOf function on the USDC contract at 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 on Ethereum mainnet."},{"title":"Read DeFi protocol state without API key","prompt":"Query the current liquidity reserves in a Uniswap V2 pool contract at 0x... by calling its getReserves view function — I don't have a node provider key, just use the pay-per-call tool."},{"title":"Verify NFT ownership on Ethereum","prompt":"Check whether wallet 0xDEF...456 owns token ID 7 in the NFT contract at 0x... by calling the ownerOf function on-chain — use the x402 eth_call endpoint and charge the micro-fee."}],"resultDescription":"Returns a JSON object with ok and paid status flags plus the raw return data from the Ethereum eth_call, representing the on-chain response to the read-only smart contract function invocation.","failureModes":["Invalid schema or malformed call parameters returns an error response","Contract revert causes eth_call to fail with revert reason","Incorrect contract address or function selector returns empty or error data","Payment failure via x402 prevents the call from executing","Network congestion or RPC node downtime causes timeout"],"whenToPreferThis":"Prefer this endpoint when an AI agent needs to read Ethereum smart contract state without a pre-provisioned node provider API key, subscription, or identity — the $0.002 USDC x402 payment replaces authentication. Ideal for ephemeral agents, serverless workflows, or trustless on-chain lookups where signing up for Infura, Alchemy, or similar is impractical.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T06:49:11.226Z","isFirstParty":false,"canonicalSlug":"x402-toolbox-eth-call-1b56cc1f"}