{"uid":"cap_7OHfF5JbQ_aYHpZqidN1n","slug":"grizzly-base-address-research-tool-4fedabac","name":"Grizzly Base Address Research Tool","description":"Pay-per-call data tools for agents, paid in USDC on Base via x402.","url":"https://grizzly-x402.onrender.com/base/research?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":["address"],"properties":{"address":{"type":"string","description":"0x address on Base (wallet or contract)"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","properties":{"kind":{"type":"string"},"block":{"type":"integer"},"chain":{"type":"string"},"token":{"type":["object","null"]},"wallet":{"type":"object"},"address":{"type":"string"},"activity":{"type":"object"},"disclaimer":{"type":"string"}}}}}}},"responseSchema":{"type":"json","example":{"kind":"contract","block":36000000,"chain":"base","token":{"symbol":"USDC","risk_flags":["upgradeable_proxy"]},"wallet":{"eth":"0","tokens":{"USDC":"0"},"txCount":1,"isContract":true},"address":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","activity":{"ethTxCount":1,"windowBlocks":10000,"usdcTransfers":[]},"disclaimer":"Informational only"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_pm-Sdv0lvV3kg6OHDYyzt","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Looks up on-chain data for a Base blockchain address, returning wallet balances, transaction activity, contract metadata, token info, and risk flags.","exampleAgentPrompt":"Can you research the Base address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 and tell me if it's a wallet or contract, what its balances are, and whether there are any risk flags?","exampleUseCases":[{"title":"Vet a DeFi contract before interacting","prompt":"Before I interact with this Base contract at 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913, can you look it up and tell me if it's an upgradeable proxy, what token it represents, and how much activity it has?"},{"title":"Check a counterparty wallet before sending funds","prompt":"I'm about to send USDC to 0x1234abcd5678ef000000000000000000000000aa on Base — can you pull its on-chain profile and tell me if it's a real wallet, how many transactions it has, and whether anything looks suspicious?"},{"title":"Audit USDC transfer activity for a Base address","prompt":"Look up the recent USDC transfer history and transaction count for Base address 0xabcdef1234567890abcdef1234567890abcdef12 — I want to understand how active it's been."}],"resultDescription":"Returns a JSON object containing: the address kind (wallet or contract), current block number, chain identifier (base), ETH and token balances, total transaction count, USDC transfer history within the last 10,000 blocks, token metadata (symbol, risk flags like 'upgradeable_proxy'), and a disclaimer that the data is informational only.","failureModes":["Missing or invalid 'address' query parameter returns an error","Non-Base or malformed 0x address may return empty or error response","Payment failure via x402 protocol results in 402 response and no data","Address with no on-chain history may return empty balances and zero counts","Service downtime on render.com host may cause 503 errors"],"whenToPreferThis":"Choose this endpoint when you need a quick, cheap ($0.01 USDC) on-chain profile of any Base network address — especially when you want wallet vs. contract classification, token balances, USDC transfer history, and contract risk flags in a single call. Prefer it over general blockchain explorers when operating in an autonomous agent context with x402 micropayment support on Base.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-30T19:04:52.840Z","isFirstParty":false,"canonicalSlug":"grizzly-base-address-research-tool-4fedabac"}