{"uid":"cap_6lUlLpq3FKwq6PuQh6KMI","slug":"grizzly-token-check-erc-20-contract-info-on-base-e8ac03b1","name":"Grizzly Token Check — ERC-20 Contract Info on Base","description":"Pay-per-call data tools for agents, paid in USDC on Base via x402.","url":"https://grizzly-x402.onrender.com/token/check?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":"ERC-20 token contract address on Base"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","properties":{"name":{"type":["string","null"]},"chain":{"type":"string"},"owner":{"type":"object"},"proxy":{"type":"object"},"symbol":{"type":["string","null"]},"address":{"type":"string"},"codeSize":{"type":"integer"},"decimals":{"type":["integer","null"]},"functions":{"type":"object"},"disclaimer":{"type":"string"},"isContract":{"type":"boolean"},"risk_flags":{"type":"array","items":{"type":"string"}},"totalSupply":{"type":["string","null"]}}}}}}},"responseSchema":{"type":"json","example":{"name":"USD Coin","chain":"base","owner":{},"proxy":{},"symbol":"USDC","address":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","codeSize":1000,"decimals":6,"functions":{},"disclaimer":"Informational only","isContract":true,"risk_flags":["upgradeable_proxy"],"totalSupply":"1000000"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.003","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":"$0.003/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_jDAhabfXQDiIyXiiOTuj_","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.003","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Looks up metadata and risk flags for an ERC-20 token contract address on the Base blockchain","exampleAgentPrompt":"Can you check the token contract at 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base and tell me the name, symbol, decimals, and any risk flags like whether it's an upgradeable proxy?","exampleUseCases":[{"title":"Pre-trade token safety check","prompt":"Before I swap into this token, can you look up the contract 0xAbCd1234... on Base and tell me if there are any risk flags or if it's an upgradeable proxy I should be worried about?"},{"title":"Identify unknown token received","prompt":"I just received some tokens at contract address 0x4200000000000000000000000000000000000006 on Base — can you find out what token this is, its symbol, and how many decimals it uses?"},{"title":"DeFi due diligence on new project","prompt":"I'm considering adding liquidity to a new Base protocol — can you pull the contract info for 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 including total supply, owner details, and any proxy or risk flags?"}],"resultDescription":"Returns a JSON object with the token's name, symbol, decimals, total supply, chain identifier, contract code size, owner info, proxy info, a list of risk flags (e.g. 'upgradeable_proxy'), whether the address is a contract, and an informational disclaimer.","failureModes":["Invalid or non-contract address returns isContract: false with empty metadata","Address not deployed on Base returns empty or error response","Rate limiting or payment failure via x402 results in 402 Payment Required","Network timeouts on Render free-tier hosting may cause slow or failed responses","Newly deployed contracts may have incomplete metadata"],"whenToPreferThis":"Use this endpoint when you need quick on-chain ERC-20 token metadata and basic risk flags for a Base network contract address, especially in DeFi agent workflows where you want to validate a token before a trade or liquidity action. Prefer this over generic block explorers when you need structured, agent-consumable JSON with risk flags and proxy detection included at a low per-call cost.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-30T19:05:03.147Z","isFirstParty":false,"canonicalSlug":"grizzly-token-check-erc-20-contract-info-on-base-e8ac03b1"}