{"uid":"cap_NcAzDfe1TYou4H2F6bUjZ","slug":"evm-chain-reference-data-unykorn-genesis402-ed941c6e","name":"EVM Chain Reference Data — UnyKorn/Genesis402","description":"Reference data for a supported EVM chain — Genesis402 / UnyKorn Operator Network","url":"https://twin.unykorn.org/chain-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":"chain-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_Md1hRus6qMKtFEs0d8qeO","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":"Returns reference data and metadata for a specified supported EVM chain","exampleAgentPrompt":"Can you pull up the reference data for the Base chain from the UnyKorn network?","exampleUseCases":[{"title":"Verify Arbitrum chain parameters","prompt":"What are the reference details for the Arbitrum chain? I need the official chain metadata from UnyKorn."},{"title":"Validate Polygon network config","prompt":"Can you look up the chain info for Polygon on the UnyKorn network so I can confirm my app is configured correctly?"},{"title":"Enumerate supported EVM chain specs","prompt":"I need to check the reference data for Optimism — pull up the chain info from UnyKorn so I have the canonical specs."}],"resultDescription":"A JSON object with ok status, chain type info, a receipt containing a transaction hash, USD amount paid, and a receipt ID, plus an ISO 8601 generation timestamp.","failureModes":["Unsupported chain name returns validation error","Payment not received or insufficient funds causes 402 rejection","Network timeout from underlying chain data provider","Malformed request body returns schema validation error"],"whenToPreferThis":"Use this endpoint when you need authoritative, on-demand reference metadata for one of ten specific supported EVM chains (Ethereum, Base, Polygon, Arbitrum, Optimism, BSC, Avalanche, Gnosis, Linea, Scroll) and are operating in an x402 pay-per-call environment. Prefer this over free public chain registries when you need a receipted, auditable lookup with provenance tracking via the UnyKorn/Genesis402 network.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-01T18:55:50.409Z","isFirstParty":false,"canonicalSlug":"evm-chain-reference-data-unykorn-genesis402-ed941c6e"}