{"uid":"cap_m9M0Jd69YFhcLo7VnxlU7","slug":"agent-hub-evm-json-rpc-gateway-6538fc39","name":"Agent Hub EVM JSON-RPC Gateway","description":"JSON-RPC read access to EVM chains (base, ethereum, polygon, arbitrum, optimism) with no API key. Send a standard JSON-RPC body (eth_call, eth_getBalance, eth_blockNumber, eth_getLogs). Also callable as GET with the same fields as query parameters.","url":"https://agents.torbrooknews.com/v1/rpc/:chain?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"},"pathParams":{"type":"object","required":["chain"],"properties":{"chain":{"type":"string","description":"base | ethereum | polygon | arbitrum | optimism"}}},"queryParams":{"type":"object","required":["method"],"properties":{"id":{"type":"string","description":"JSON"},"method":{"type":"string"},"params":{"type":"string","description":"separate items with |"},"jsonrpc":{"type":"string"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"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_mAupUQT53nW_xuq8JPTVM","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":"Provides keyless JSON-RPC read access to major EVM chains (Base, Ethereum, Polygon, Arbitrum, Optimism) via standard methods like eth_call, eth_getBalance, eth_blockNumber, and eth_getLogs","exampleAgentPrompt":"What's the current ETH balance of wallet 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 on Ethereum? Use the JSON-RPC eth_getBalance method and return the result in wei.","exampleUseCases":[{"title":"Check wallet balance on Ethereum","prompt":"Can you look up the ETH balance of address 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 on Ethereum using eth_getBalance?"},{"title":"Read smart contract state on Base","prompt":"Call the totalSupply() function on the ERC-20 contract at 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base using eth_call — what does it return?"},{"title":"Fetch recent token transfer logs on Polygon","prompt":"Get me the latest ERC-20 Transfer event logs from contract 0x2791Bca1f2de4661ED88A30C99A7a9449Aa84174 on Polygon using eth_getLogs — I need to see recent transfer activity."}],"resultDescription":"A standard JSON-RPC response object containing the result field with the on-chain data (e.g. balance in hex wei, call return data, log array, or block number), along with the id and jsonrpc fields mirroring the request.","failureModes":["Unsupported chain name returns an error or 404","Malformed params string (incorrect | delimiter) causes parse errors","eth_call to a non-existent contract address returns 0x","Rate limiting or payment failure (x402) if USDC payment not processed","Methods that require write access (eth_sendRawTransaction) are not supported — read-only","Invalid hex address in params returns RPC error"],"whenToPreferThis":"Choose this endpoint when you need keyless, no-signup EVM blockchain read access across multiple major chains without provisioning your own RPC provider. Ideal for agents that need to query on-chain state on Base, Ethereum, Polygon, Arbitrum, or Optimism ad-hoc at $0.002/call via x402 micropayment, without managing API keys or RPC subscriptions.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-13T12:46:41.141Z","isFirstParty":false,"canonicalSlug":"agent-hub-evm-json-rpc-gateway-6538fc39"}