{"uid":"cap_TOFzljHNRkxMhwcbQj6uu","slug":"moneytools-chain-registry-lookup-96b59f2b","name":"MoneyTools Chain Registry Lookup","description":"Chain registry lookup: Chain id → name, native currency, public RPCs, explorers, CAIP-2 id and a ready wallet_addEthereumChain object (ethereum-lists/chains, CC0). Free tier 10/day; then $0.001 via x402 (HTTP 402 + PAYMENT-REQUIRED) or X-API-Key credits. Not charged on failure. $0.001 USDC per call via x402 on Base. Run by MoneyTools.","url":"https://tools.moneytools.dev/v1/chain-info?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"const":"http"},"method":{"const":"GET"},"queryParams":{"type":"object","required":["chainId"],"properties":{"chainId":{"type":"string","examples":["8453"],"description":"numeric chain id or common name"}}}}},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string","const":"json"},"example":{"type":"object","properties":{"payment":{"type":"object","properties":{"charged":{"type":"boolean"},"network":{"type":"string"},"amountUsd":{"type":"string"},"transaction":{"type":["string","null"]}}},"freeTier":{"type":"object"},"_moneytools":{"type":"object","description":"optional plan / partner hints"}},"description":"Tool-specific JSON result (see llms.txt / openapi.json). Always includes payment info.","additionalProperties":true}}}}},"responseSchema":{"type":"json"},"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_gMmjA8F_c-JyxDVlhT0E_","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":"Looks up EVM chain metadata by chain ID or name, returning native currency, public RPCs, block explorers, CAIP-2 ID, and a ready-to-use wallet_addEthereumChain object.","exampleAgentPrompt":"Can you look up the chain info for chain ID 8453 — I need the public RPC URLs, block explorer links, native currency, and the wallet_addEthereumChain config object for it.","exampleUseCases":[{"title":"Add new network to MetaMask","prompt":"I want to add Arbitrum One to MetaMask — can you fetch the wallet_addEthereumChain config for chain ID 42161 so I can plug it straight in?"},{"title":"Resolve RPC endpoints for a dApp","prompt":"My dApp needs to connect to Polygon mainnet — can you get me the public RPC endpoints and native currency info for chain ID 137?"},{"title":"Find block explorer for a transaction","prompt":"I have a transaction hash on Optimism (chain ID 10) and need to look it up — what are the block explorer URLs for that chain?"}],"resultDescription":"A JSON object containing the chain's canonical name, native currency (name, symbol, decimals), public RPC URL list, block explorer URL list, CAIP-2 chain ID, a ready-to-use wallet_addEthereumChain payload, plus payment metadata (whether the call was charged, network, USD amount, and transaction hash).","failureModes":["Unknown chain ID returns an error or empty result","Missing chainId query parameter results in a 400 bad request","Free tier exhausted (10/day) with no payment method results in HTTP 402 Payment Required","Invalid or non-numeric chainId string may return an error","Chains not in ethereum-lists/chains registry will not be found"],"whenToPreferThis":"Use this endpoint when you need authoritative, structured EVM chain metadata — especially RPC URLs, explorer links, and wallet_addEthereumChain objects — sourced from the community-maintained ethereum-lists/chains registry. Prefer it over hardcoding chain configs or scraping chain aggregator sites. It's particularly useful for agents that need to programmatically onboard users onto new EVM networks or validate chain identifiers via CAIP-2.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-11-05T12:42:50.576Z","isFirstParty":false,"canonicalSlug":"moneytools-chain-registry-lookup-96b59f2b"}