{"uid":"cap_uaq0nqFCLlXWoF4Z1TyA2","slug":"base-token-check-05ca0db7","name":"Base Token Check","description":"Due-diligence report for an ERC-20 token on Base: contract verification, upgradeability, owner powers (mint, pause, blocklist, fees), DEX liquidity, pool age and holder concentration, with a 0-100 score and a plain-language summary.","url":"https://tokencheck.yukikawata.fyi/v1/base/tokens/%7Baddress%7D?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"properties":{"type":"string"}}},"responseSchema":{"type":"json","example":{"chain":"base","flags":[{"code":"can_mint","message":"New tokens can be minted.","severity":"medium"}],"score":90,"address":"0x940181a94A35A4569E4529A3CDfB74e38FD98631","summary":"AERO on Base shows few warning signs. New tokens can be minted. The owner is not active, but another role may hold this power.","verdict":"few warning signs"}},"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_6rnfKJpNt2UHebw7lnnt6","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":"Returns a 0-100 safety score and plain-language due-diligence report for any ERC-20 token on the Base blockchain, covering contract verification, owner privileges, liquidity, and holder concentration.","exampleAgentPrompt":"Can you run a token safety check on 0x940181a94A35A4569E4529A3CDfB74e38FD98631 on Base and tell me if it has any minting or pause risks and what the overall score is?","exampleUseCases":[{"title":"Pre-trade token risk screening","prompt":"Before I buy this token at 0x4200000000000000000000000000000000000006 on Base, can you check if the contract is verified, whether the owner can mint or freeze tokens, and give me an overall safety score?"},{"title":"DeFi liquidity and holder concentration audit","prompt":"I'm looking at adding liquidity to a Base token pool — can you pull a due-diligence report on 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 and flag any concerns about holder concentration or pool age?"},{"title":"Smart contract backdoor investigation","prompt":"Someone sent me a link to a new token on Base at 0xd9aAEc86B65D86f6A7B5B1b0c42FFA531710b6CA — can you check if the contract is upgradeable, has blocklist powers, or any other red flags, and summarize the risks in plain English?"}],"resultDescription":"A JSON object containing the chain name, token contract address, a numeric safety score from 0 to 100, a verdict label (e.g. 'few warning signs'), a plain-language summary sentence, and an array of risk flags each with a code, human-readable message, and severity level (e.g. low/medium/high).","failureModes":["Invalid or malformed contract address returns an error response","Address is valid Ethereum format but not a token on Base — may return empty or error","Token contract not yet indexed or very new — liquidity/pool data may be absent","Network or upstream data provider outage causes timeout","Payment of $0.01 USDC not processed correctly, returning 402 status"],"whenToPreferThis":"Choose this endpoint when you need a fast, structured risk assessment of an ERC-20 token specifically deployed on the Base blockchain. It is purpose-built for Base and returns a single opinionated score plus categorized flags, making it ideal for pre-trade screening, automated portfolio monitoring, or user-facing risk summaries — especially when you need plain-language output without building your own on-chain analysis pipeline.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T03:43:18.126Z","isFirstParty":false,"canonicalSlug":"base-token-check-c2c9a74f"}