{"uid":"cap_xaImnopCs6Vlg4vJygpG2","slug":"padelmaps-org-smart-contract-decoder-f1dbe8fc","name":"padelmaps.org Smart Contract Decoder","description":"Decode and analyze smart contract with AI-powered plain English explanation","url":"https://padelmaps.org/api/x402-crypto/contract-decoder","method":"POST","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","bodyType","body"],"properties":{"body":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["address"],"properties":{"chain":{"type":"string","description":"Blockchain (default: base)"},"address":{"type":"string","description":"Contract address (0x + 40 hex chars)"}}},"type":{"type":"string","const":"http"},"method":{"enum":["POST"],"type":"string"},"bodyType":{"enum":["json"],"type":"string"}},"additionalProperties":false},"output":{"type":"object","properties":{"type":{"type":"string"},"example":{"type":"object","properties":{"data":{"type":"object","properties":{"chain":{"type":"string"},"address":{"type":"string"},"analysis":{"type":"object","description":"AI-generated analysis including summary, purpose, key_functions, security_notes, risk_level"},"verified":{"type":"boolean"},"explorer_url":{"type":"string","description":"Link to view contract on block explorer"},"contract_name":{"type":"string"},"risk_analysis":{"type":"object","description":"Pattern-based risk analysis with flags and risk_score"}}},"success":{"type":"boolean"}}}}}}},"responseSchema":null,"example":{"request":{"input":{"body":{"chain":"ethereum","address":"0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48"},"type":"http","method":"POST","bodyType":"json"}},"response":{"data":{"chain":"ethereum","address":"0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48","analysis":{"purpose":"Upgradeable Proxy for USDC Stablecoin","summary":"FiatTokenProxy is a transparent upgradeable proxy contract used by Centre (Circle/Coinbase) for the USDC stablecoin. It delegates all non-admin calls to an underlying implementation contract, while allowing an admin to upgrade the implementation address or transfer admin rights. This is the standard ZeppelinOS AdminUpgradeabilityProxy pattern.","ai_model":"claude-opus-4-6","risk_level":"medium","token_info":{"is_token":false,"standard":"None","has_taxes":false,"tax_details":"The proxy itself has no token logic. Token behavior (ERC20, fees, blacklisting, minting, pausing) is entirely determined by the implementation contract it points to."},"ai_provider":"claude-cli","key_functions":[{"name":"upgradeTo","description":"Allows the admin to change the implementation contract address, effectively upgrading all token logic"},{"name":"upgradeToAndCall","description":"Upgrades the implementation and immediately calls a function on it (used for initializing new implementations)"},{"name":"changeAdmin","description":"Transfers proxy admin rights to a new address"},{"name":"admin","description":"Returns the current proxy admin address (only callable by admin)"},{"name":"implementation","description":"Returns the current implementation address (only callable by admin)"},{"name":"fallback","description":"Delegates all non-admin calls to the implementation contract via delegatecall"}],"access_control":"A single admin address has exclusive control over upgrades and admin transfers. The admin CANNOT interact with the underlying implementation through the proxy (transparent proxy pattern). All non-admin callers are transparently forwarded to the implementation.","security_notes":["The admin has unrestricted upgrade power and can replace the entire token implementation at any time, which is a significant centralization risk","upgradeToAndCall uses a low-level call pattern (address(this).call.value(msg.value)(data)) that forwards all gas and only checks a boolean return, which is acceptable for this pattern but less safe than modern Solidity practices","Uses Solidity 0.4.24 which lacks modern safety features like built-in overflow checks, though the proxy itself does minimal arithmetic","Storage slot constants are validated via assert in constructors, preventing misconfiguration","The transparent proxy pattern correctly prevents the admin from accidentally calling implementation functions, avoiding function selector clashing","No timelock or multisig is enforced at the proxy level — upgrade governance depends entirely on what entity controls the admin address","This is a known, audited, production contract (USDC) that has been live on Ethereum mainnet since 2018 and secures tens of billions of dollars"],"risk_explanation":"The contract itself is well-audited and battle-tested as the USDC proxy. Risk is rated medium (not low) because the admin holds unilateral, instant upgrade authority with no on-chain timelock or multisig enforcement, meaning the entire token logic can be replaced at any time. For a centralized regulated stablecoin this is by design, but it represents a real centralization and trust dependency on Circle/Centre."},"verified":true,"chain_name":"Ethereum","explorer_url":"https://etherscan.io/address/0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48#code","contract_name":"FiatTokenProxy","risk_analysis":{"flags":["delegatecall","assembly"],"risk_level":"low","risk_score":20,"flag_details":{"assembly":"Low-level code that bypasses Solidity safety checks","delegatecall":"Can execute arbitrary code in contract's context"},"patterns_found":2},"compiler_version":"v0.4.24+commit.e67f0147","source_available":true,"optimization_used":false},"cached":false,"success":true,"timestamp":"2026-06-20T05:32:57.786058+00:00"}},"exampleRequest":{"chain":"ethereum","address":"0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48"},"tags":["x402"],"displayCostAmount":"0.02","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"settled","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_1rL-46s7aWnmGq7tBPHeB","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Decodes and analyzes a smart contract address using AI to produce a plain-English explanation of what the contract does","exampleAgentPrompt":"Can you decode and explain in plain English what this smart contract does? The address is 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 on Ethereum.","exampleUseCases":null,"resultDescription":"An AI-generated plain-English explanation of the smart contract, including what it does, its key functions, and its behavior — making the contract understandable without needing to read raw Solidity code.","failureModes":["Invalid or malformed contract address returns an error","Contract address not found on specified chain returns not-found error","Unverified or undeployable contract with no ABI may return incomplete analysis","Unsupported blockchain network returns an error","Rate limiting or payment failure returns 402 or 429 status"],"whenToPreferThis":"Choose this endpoint when a user needs a quick, AI-generated plain-English explanation of what a smart contract does without reading raw code or ABI. Ideal for non-technical users, DeFi researchers, or anyone auditing an unfamiliar contract address. Prefer over manual ABI inspection when a narrative summary is needed rather than raw data.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T06:39:33.885Z","isFirstParty":false}