{"uid":"cap_8m2BJ0JSzVrp_z0gMZ0qq","slug":"evm-rpc-client-software-identifier-37c84aee","name":"EVM RPC Client Software Identifier","description":"Which client software is behind an RPC endpoint — Genesis402 / UnyKorn Operator Network","url":"https://twin.unykorn.org/evm-node-info?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"params":{"type":"object","properties":{"chain":{"enum":["ethereum","base","polygon","arbitrum","optimism","bsc","avalanche","gnosis","linea","scroll"],"type":"string"}}}}},"responseSchema":{"type":"json","example":{"ok":true,"type":"evm-node-info","receipt":{"tx_hash":"0x<64hex>","amount_usd":0.001,"receipt_id":"g402-<16hex>"},"generated_at":"<iso8601>"}},"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_qAqL_hSpgZV5Q8NEhhBXf","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":"Identifies which client software (e.g. Geth, Nethermind, Erigon) is running behind an EVM-compatible RPC endpoint for a given blockchain network","exampleAgentPrompt":"Can you tell me which client software is running behind the Ethereum RPC node — like whether it's Geth, Erigon, or Nethermind?","exampleUseCases":[{"title":"Auditing node diversity on Ethereum","prompt":"I'm doing a node diversity audit — can you check which client software is behind the Ethereum RPC endpoint? I want to know if it's Geth, Nethermind, Erigon, or something else."},{"title":"Debugging Base chain connectivity","prompt":"We're having weird RPC behavior on Base — can you probe the Base node and tell me which client software is running behind it so we know what we're dealing with?"},{"title":"Choosing a reliable Polygon RPC provider","prompt":"Before I commit to this RPC provider, can you check which client software is powering their Polygon node? I want to know if it's a client known for stability."}],"resultDescription":"Returns a JSON object indicating whether the request succeeded, the type of result ('evm-node-info'), details about the detected client software running behind the specified EVM chain's RPC endpoint, a generation timestamp, and a payment receipt including transaction hash, USD amount, and a receipt ID.","failureModes":["Unsupported chain enum value returns validation error","Node unreachable or timeout results in error response","RPC endpoint does not expose client version info (some nodes hide it), leading to null or unknown client result","Payment failure via x402 protocol prevents request from completing"],"whenToPreferThis":"Choose this endpoint when you need to programmatically identify or audit the specific EVM client software (Geth, Nethermind, Erigon, Besu, etc.) behind an RPC node for one of the 10 supported chains. Ideal for infrastructure audits, debugging RPC anomalies, or researching client diversity across networks. Prefer this over manual RPC introspection when you need a structured, paid API response with a receipt for compliance or logging.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-01T18:55:12.140Z","isFirstParty":false,"canonicalSlug":"evm-rpc-client-software-identifier-37c84aee"}