{"uid":"cap_I0bYWpKiPMjLnx4tk4xxK","slug":"x402-network-registry-lookup-af1f083d","name":"x402 Network Registry Lookup","description":"Reference for x402 sellers and clients: each network's CAIP-2 id, v1 name, chain id, USDC contract, decimals, the EIP-712 domain name and version its USDC signs over (read from the contracts), and explorer. Pass network to get one.","url":"https://dev.kagurazaka.dev/v1/networks?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"},"queryParams":{"type":"object","required":[],"properties":{"network":{"type":"string","description":"CAIP-2 id or v1 name, such as eip155:8453 or base"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","properties":{"networks":{}}}}}}},"responseSchema":{"type":"json","example":{"networks":[{"name":"Base","usdc":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","eip712":{"name":"USD Coin","version":"2"},"network":"eip155:8453","testnet":false,"chain_id":8453,"decimals":6,"explorer":"https://basescan.org"}]}},"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_ntrM5I0-P08dfJXkOhRve","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":"Returns metadata for x402-supported blockchain networks including CAIP-2 IDs, chain IDs, USDC contract addresses, EIP-712 domain parameters, decimals, and block explorers.","exampleAgentPrompt":"What are all the x402 network details for Base mainnet — I need the CAIP-2 ID, USDC contract address, EIP-712 domain name and version, chain ID, decimals, and block explorer URL.","exampleUseCases":[{"title":"Resolving USDC contract for payment","prompt":"I'm building an x402 payment flow and need the USDC contract address, decimals, and EIP-712 signing parameters for the Base network — can you pull those from the x402 network registry?"},{"title":"Listing all supported x402 networks","prompt":"Can you give me the full list of networks that x402 supports, with their CAIP-2 IDs, chain IDs, and whether they're testnets?"},{"title":"Validating EIP-712 domain for USDC","prompt":"I need to verify the EIP-712 domain name and version that USDC uses on Base (eip155:8453) for signing x402 payment payloads — can you look that up?"}],"resultDescription":"Returns an array of network objects, each containing: CAIP-2 network ID (e.g. eip155:8453), human-readable name, USDC contract address, EIP-712 domain name and version (read from the contract), chain ID, decimal precision (6), testnet boolean, and block explorer URL. If a specific network query parameter is passed, returns only that network's data.","failureModes":["Unknown network identifier returns empty or error response","Passing an unsupported CAIP-2 ID or v1 name returns no matching network","Network temporarily unavailable returns a server error","Malformed query parameter may return a 400 or empty result"],"whenToPreferThis":"Use this endpoint when you need authoritative x402-specific network metadata — especially USDC contract addresses and EIP-712 signing parameters — for constructing or validating x402 payment payloads. Prefer this over generic chain registry APIs because it includes x402-specific EIP-712 domain data read directly from deployed USDC contracts.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-30T12:31:03.275Z","isFirstParty":false,"canonicalSlug":"x402-network-registry-lookup-af1f083d"}