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EVM Address Type Classifier
x402
EVM Address Type Classifier is a paid API for AI agents from task-radar-x402.vercel.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-31).
Classifies an EVM address as EOA, contract, EIP-7702 delegated EOA, EIP-1167 minimal proxy, or EIP-1967 proxy, and returns code size, balance, and nonce
Price / call$0.01
Success—
StatusUnknown
How this service works
Address type check: EOA vs contract, EIP-7702 delegated EOA, EIP-1167 minimal proxy, EIP-1967 proxy implementation/admin/beacon, code size, balance, nonce (public RPC). 0.01 USDC/call on Base.
Output
Returns the address classification (EOA, contract, EIP-7702 delegated EOA, EIP-1167 minimal proxy, EIP-1967 proxy), proxy-related metadata (implementation address, admin address, beacon address), plus on-chain data including code size in bytes, native token balance, and nonce — all fetched live from public RPC.
Example use cases
Identify proxy implementation before interaction
“Before I call this contract, can you check if 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 on Ethereum is a proxy and what implementation address it points to?”
Security audit of suspected bot wallet
“I need to know if address 0xdAC17F958D2ee523a2206206994597C13D831ec7 on Ethereum is actually an EOA or some kind of contract — also tell me its nonce and balance.”
Verify EIP-7702 delegation on Base
“Check whether 0xBe0Eb53F46cd790Cd13851d5EFf43D12404d33E8 on Base is a delegated EOA under EIP-7702 and what its code size looks like.”
Technical details
Endpoint
GEThttps://task-radar-x402.vercel.app/api/address-type?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to programmatically classify an EVM address before interacting with it — especially for security checks, proxy pattern detection, or distinguishing EOAs from contracts across multiple chains. It is superior to raw RPC calls because it bundles proxy pattern detection (EIP-1167, EIP-1967, EIP-7702) with basic account data in a single call, saving multiple RPC round-trips.
Side effects
- Invalid or malformed address returns an error
- Unsupported chain value returns an error
- RPC node unavailability causes timeout or 500 error
- Address with no on-chain activity returns minimal data (zero balance, zero nonce, zero code size)
- Rate limiting or payment failure returns 402 or 429
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Tags
x402
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