{"uid":"cap_Mk8R5ELTi-nOl404MtiON","slug":"agentrxi-evm-json-rpc-gateway-ce2bf03f","name":"AgentRXI 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://agentrxi.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":"0.0025","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":"$0.0025/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.0025","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.0025","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_KP522Yp7EDIYK8jYzkN3d","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.0025","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Provides keyless read-only JSON-RPC access to major EVM chains (Ethereum, Base, Polygon, Arbitrum, Optimism) via standard eth_ methods","exampleAgentPrompt":"What's the ETH balance of wallet 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 on Ethereum mainnet right now?","exampleUseCases":[{"title":"Check wallet balance on-chain","prompt":"What's the current ETH balance of 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 on Ethereum? Use eth_getBalance."},{"title":"Read smart contract state on Base","prompt":"Call the balanceOf function on the USDC contract at 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base for wallet 0xAb5801a7D398351b8bE11C439e05C5B3259aeC9B — use eth_call."},{"title":"Fetch recent contract event logs","prompt":"Get me the latest event logs from contract 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D on Ethereum using eth_getLogs so I can see recent activity."}],"resultDescription":"A standard JSON-RPC response object containing the result field with chain data (balance in wei, hex-encoded block number, log array, contract return value, etc.) matching the requested eth_ method output format.","failureModes":["Unsupported chain name returns an error — only base, ethereum, polygon, arbitrum, optimism are valid","Invalid or malformed JSON-RPC method name returns an error response","Incorrect params format (must be pipe-separated in query string) causes parse failure","Write methods (eth_sendRawTransaction) are not supported — read-only access only","Payment failure (insufficient USDC) blocks the call with a 402 response","Network timeout or RPC node unavailability returns a gateway error"],"whenToPreferThis":"Choose this endpoint when you need keyless, pay-per-call read access to EVM blockchain data across multiple chains without managing API keys or subscriptions. Ideal for agents that occasionally query on-chain state (balances, logs, contract calls) and want simple HTTP-based JSON-RPC without standing up infrastructure. Prefer over self-hosted nodes when cost-per-call economics work and multi-chain support matters.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-15T06:39:18.967Z","isFirstParty":false,"canonicalSlug":"agentrxi-evm-json-rpc-gateway-ce2bf03f"}