{"uid":"cap_q9hot7v5toBwtKMmddQZ9","slug":"contract-safety-checker-base-bsc-b2efb72f","name":"Contract Safety Checker (Base/BSC)","description":"x402 v2 paid EVM token contract risk API on Base and BSC. For 0.02 USDC, returns EIP-1967 proxy detection, owner control and renouncement status, and block-explorer source-code verification. Built for AI agents, bots, and automated token screening.","url":"https://node-starter--maxujon18.replit.app/api/check-contract","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":{"chain":{"enum":["base","bsc"],"type":"string","description":"Chain to check the contract on"},"address":{"type":"string","description":"EVM contract address to check (0x...)"}},"additionalProperties":false}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","required":["address","chain","riskLevel","signals","checkedAt"],"properties":{"chain":{"type":"string"},"address":{"type":"string"},"signals":{"type":"array","items":{"type":"string"}},"checkedAt":{"type":"string"},"riskLevel":{"enum":["low","medium","high"],"type":"string"}},"additionalProperties":false}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.02","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":"$0.02/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_RMmbX6-ts20yvyqUgAaqE","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Performs on-chain risk assessment of an EVM token contract on Base or BSC, checking proxy pattern, owner renouncement, and source-code verification status.","exampleAgentPrompt":"Can you do a safety check on this Base contract — 0x1234567890abcdef1234567890abcdef12345678 — and tell me if it's a proxy, whether ownership has been renounced, and if the source code is verified?","exampleUseCases":null,"resultDescription":"Returns a structured object with the contract address, chain, a risk level enum (low, medium, or high), an array of risk signal strings describing specific findings (e.g. proxy detected, ownership not renounced, unverified source), and a timestamp of when the check was performed.","failureModes":["Invalid or malformed contract address returns an error","Contract not found on the specified chain","Unsupported chain value (only 'base' and 'bsc' are accepted)","Payment not received or insufficient — returns 402 Payment Required","RPC or on-chain data unavailable — may return a 503 or timeout"],"whenToPreferThis":"Use this endpoint when you need a quick, structured risk assessment of a specific EVM token contract on Base or BSC, especially when you want to surface proxy patterns, ownership status, and source verification in a single call without manually querying block explorers.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T06:32:50.446Z","isFirstParty":false}