EVM Smart Contract Explainer

x402

EVM Smart Contract Explainer is a paid API for AI agents from meryol-agenticmarket-x402.hf.space, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-11).

Returns a structured explanation of any EVM smart contract including type classification, risk warnings, and top called functions in the last 24 hours

Price / call$0.01

Seller volume →—

Success—

StatusUnknown

How this service works

Returns a structured explanation of any EVM smart contract on Ethereum, Base, Arbitrum, or Optimism. Output: type label (ERC20/ERC721/proxy/router), name, 3-bullet summary, risk warnings (unverified, upgradeable_via_proxy, mintable_by_owner, pausable), and top 5 selectors called in 24h with live call counts. Rugcheck, ABI decoding, proxy detection, "what is 0x..." lookups before an agent signs a tx. Works on unverified contracts via 4byte fallback.

Output

A structured JSON object containing: the contract's type label (ERC20, ERC721, proxy, router, etc.), its name, a 3-bullet plain-English summary, an array of risk warning strings (e.g. unverified, upgradeable_via_proxy, mintable_by_owner, pausable), verified boolean, and the top 5 function selectors called in the past 24 hours with their live call counts.

Example use cases

Rugcheck unknown token before buying

“I found this token on Base at 0x4200000000000000000000000000000000000006 and I'm thinking about buying some — can you check if it's safe, whether the owner can mint or pause it, and give me a plain-English summary of what it actually does?”

Detect proxy upgrades in DeFi protocol

“Before I deposit funds into this Arbitrum DeFi protocol at 0xFF970A61A04b1cA14834A43f5dE4533eBDDB5CC6, can you tell me if it's upgradeable via a proxy, who controls it, and what the riskiest things about it are?”

Decode unverified contract activity today

“This unverified contract at 0x68b3465833fb72A70ecDF485E0e4C7bD8665Fc45 on Optimism keeps showing up in my wallet's transaction history — can you figure out what type of contract it is, what its most-called functions have been in the last 24 hours, and whether I should be worried about interacting with it?”

Technical details

Endpoint

GEThttps://meryol-agenticmarket-x402.hf.space/explain/:chain/:address?utm_source=zero.xyz

When to prefer

Use this endpoint when an AI agent or user needs to understand an unknown smart contract before signing a transaction, performing a rugcheck, or interacting with a DeFi protocol. Especially valuable for unverified contracts where ABI is unavailable (uses 4byte fallback), and when proxy detection or owner-privilege risk warnings are needed. Prefer this over generic block explorers when structured, machine-readable output with risk classifications is required.

Side effects

Invalid or malformed contract address returns 400
Contract address not found on specified chain returns 404
Unsupported chain value returns 422
Unverified contract with no 4byte matches may return minimal selector info
Rate limiting or payment failure returns 402
RPC timeout on chain query returns 503

Input

{
  "chain": "ethereum",
  "address": "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48"
}

Schema · Request body

Field	Type	Description
inputrequired	object
output	object

Output

{
  "name": "FiatTokenProxy",
  "type": "ERC20 token (USDC)",
  "chain": "ethereum",
  "address": "0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48",
  "summary": [
    "USDC stablecoin proxy contract on Ethereum with permit and authorization features.",
    "Supports standard transfers, approvals, and advanced authorization mechanisms for gasless transactions.",
    "High volume: 843 transfers in 24h; owner can blacklist addresses but cannot pause."
  ],
  "verified": true,
  "warnings": [
    "upgradeable_via_proxy"
  ],
  "top_functions_24h": [
    {
      "calls": 843,
      "selector": "a9059cbb",
      "signature": "transfer(address,uint256)"
    },
    {
      "calls": 74,
      "selector": "095ea7b3",
      "signature": "approve(address,uint256)"
    },
    {
      "calls": 58,
      "selector": "23b872dd",
      "signature": "transferFrom(address,address,uint256)"
    },
    {
      "calls": 13,
      "selector": "e3ee160e",
      "signature": "transferWithAuthorization(address,address,uint256,uint256,uint256,bytes32,uint8,bytes32,bytes32)"
    },
    {
      "calls": 5,
      "selector": "cf092995",
      "signature": "transferWithAuthorization(address,address,uint256,uint256,uint256,bytes32,bytes)"
    }
  ]
}

Schema · Response

Field	Type	Description
namerequired	string
typerequired	string
chainrequired	string
addressrequired	string
summaryrequired	array
verifiedrequired	boolean
warningsrequired	array
top_functions_24hrequired	array

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