{"uid":"cap_NhXllXwYSDCW-IiqGVgMa","slug":"token-risk-pump-check-for-base-erc-20-c02b93fe","name":"Token Risk & Pump Check for Base ERC-20","description":"Pay-per-call crypto microdata for trading/onchain AI agents via x402 (USDC on Base): Base gas, token risk, balances, multi-venue prices, Hyperliquid book/funding, kimchi premium. No API keys.","url":"https://kr-x402-mvp.kgy5612.workers.dev/v1/pump-check?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":["address"],"properties":{"address":{"type":"string","pattern":"^0x[0-9a-fA-F]{40}$","examples":["0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"],"description":"Base ERC-20 contract"}},"additionalProperties":false}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"chain":"base","flags":["upgradeable_proxy"],"token":{"symbol":"USDC","decimals":6,"holder_count":11391096},"address":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","reasons":["upgradeable proxy (logic can change)"],"trading":{"buy_tax":0,"sell_tax":0,"honeypot_sim":{"is_honeypot":false},"top10_holder_pct":26.49},"verdict":"OK","can_sell":true,"contract":{"is_contract":true,"bytecode_bytes":1852,"verified_source":true},"risk_level":"low","risk_score":5,"should_buy":true}},"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_fNB5Pp6xmunazvfxy77JT","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":"Analyzes a Base ERC-20 token contract for honeypot risk, sell taxes, holder concentration, and proxy flags, returning a structured risk verdict and score.","exampleAgentPrompt":"Before I buy, run a pump check on this Base token at 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 — is it a honeypot, what's the risk score, and can I actually sell it?","exampleUseCases":[{"title":"Pre-trade honeypot screening","prompt":"I'm about to buy this new Base token at 0x4ed4E862860beD51a9570b96d89aF5E1B0Efefed — can you check if it's a honeypot, whether I can sell it, and what the risk score is before I put any money in?"},{"title":"Rug pull flag detection for DeFi bot","prompt":"My trading bot is looking at a Base memecoin at 0x940181a94A35A4569E4529a3CDfB74e38FD98631 — check if the contract is an upgradeable proxy or has any rug pull red flags, and tell me the top 10 holder concentration."},{"title":"Portfolio token safety audit","prompt":"I hold several Base tokens and want to know if any are risky — start with 0x2Ae3F1Ec7F1F5012CFEab0185bfc7aa3cf0DEc22 and give me its risk verdict, sell tax, and whether the source is verified."}],"resultDescription":"Returns a JSON object with: chain ('base'), token symbol/decimals/holder_count, risk_level (e.g. 'low'), risk_score (integer), verdict ('OK' or risk label), should_buy (boolean), can_sell (boolean), buy_tax and sell_tax percentages, honeypot simulation result (is_honeypot boolean), top10_holder_pct, contract flags array (e.g. 'upgradeable_proxy'), reasons array explaining any risk flags, and contract metadata (is_contract, bytecode_bytes, verified_source).","failureModes":["Invalid or malformed address (not a valid 0x ERC-20 address) returns 400 or error response","Address is an EOA (externally owned account), not a contract — may return empty or error","Contract not deployed on Base — returns not-found or empty result","Payment failure via x402 — 402 response if USDC micropayment not settled","Rate limits or Worker timeouts on Cloudflare edge — intermittent 5xx","Token has no on-chain data yet (very new) — risk fields may be null or incomplete"],"whenToPreferThis":"Use this endpoint when your agent needs a quick, structured go/no-go risk verdict for a specific Base ERC-20 token before executing a trade or recommending a buy. It is ideal for DeFi trading bots, wallet apps, or onchain AI agents that need honeypot detection, tax checks, and holder concentration data in a single call without API key setup. Prefer this over generic block explorers when you need a machine-readable risk_score and should_buy boolean rather than raw contract data.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-31T18:41:52.548Z","isFirstParty":false,"canonicalSlug":"token-risk-pump-check-for-base-erc-20-c02b93fe"}