{"uid":"cap_XyYNgeXcGvU-liMghxyZX","slug":"hcrb-in-token-contract-risk-base-erc-20-contract-facts-50b059f6","name":"hcrb.in Token Contract Risk – Base ERC-20 Contract Facts","description":"Deterministic Base contract facts: ERC-20 metadata, proxy slots, owner(), privileged-function selectors and flags. Not a safety verdict. Result carries a signed receipt.","url":"https://hcrb.in/v1/tools/token-contract-risk/call?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"input":{"type":"object","required":["address"],"properties":{"chain":{"enum":["base"],"type":"string","description":"Optional. Only 'base' (Base mainnet) is supported."},"address":{"type":"string","description":"Contract address on Base, 0x + 40 hex."}}}}},"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_lbQzlRiNWJqK3TOJyhXcj","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":"Returns deterministic on-chain facts about an ERC-20 token contract on Base mainnet, including metadata, proxy slots, owner, privileged-function selectors, and flags, with a signed receipt.","exampleAgentPrompt":"Pull the deterministic contract facts for the Base mainnet token at 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 — I need the ERC-20 metadata, any proxy slots, the owner address, and privileged-function selectors, with a signed receipt.","exampleUseCases":[{"title":"DeFi token due diligence before investing","prompt":"Before I buy into this Base token at 0x4200000000000000000000000000000000000006, can you pull all the on-chain contract facts — proxy slots, owner, any privileged functions — and give me a signed receipt of what you find?"},{"title":"Audit smart contract upgrade risk","prompt":"I need to know if this ERC-20 contract on Base at 0xd9aAEc86B65D86f6A7B5B1b0c42FFA531710b6CA is a proxy and who holds the owner or admin role — fetch the deterministic contract facts with a signed receipt."},{"title":"Verify token contract for wallet integration","prompt":"We're integrating a new Base ERC-20 at 0x50c5725949A6F0c72E6C4a641F24049A917DB0Cb into our wallet — check its metadata, proxy configuration, and privileged selectors and send back the signed receipt so we can log it."}],"resultDescription":"A structured payload containing ERC-20 token metadata (name, symbol, decimals, total supply), detected proxy storage slots, the owner() address if present, identified privileged-function selectors and associated flags, and a cryptographically signed receipt confirming the deterministic on-chain read. No safety verdict or ML inference is included.","failureModes":["Invalid or malformed contract address (not 0x + 40 hex) returns a validation error","Contract address is not on Base mainnet or does not exist returns a not-found or empty-result response","Address is an EOA (non-contract) rather than a contract returns an error or empty contract facts","Chain parameter set to something other than 'base' returns an unsupported-chain error","Network or RPC timeout may cause a retrieval failure"],"whenToPreferThis":"Choose this endpoint when you need raw, deterministic, verifiable on-chain facts about a Base mainnet ERC-20 contract — particularly proxy configuration, ownership, and privileged function selectors — without any ML-based safety scoring. It is ideal when auditability matters (signed receipt) and you want facts, not opinions. Prefer it over general blockchain explorers when you need structured, machine-readable output and a receipt for downstream verification.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-16T12:37:33.631Z","isFirstParty":false,"canonicalSlug":"hcrb-in-token-contract-risk-base-erc-20-contract-facts-50b059f6"}