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Base Address Label Lookup
x402
Base Address Label Lookup is a paid API for AI agents from defi-shield-hazel.vercel.app, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-14).
Labels a Base blockchain address with a known protocol name, contract detection, and on-chain verification status
Price / call$0.05
Success—
StatusUnknown
How this service works
Provides human-readable labels and metadata for blockchain addresses to identify wallets, contracts, and services across supported networks.
Output
Returns whether the address is recognized (known: true/false), a human-readable label (e.g. 'WETH (Wrapped Ether)'), the category (e.g. 'token'), whether it's verified, whether it is a contract, the contract name if applicable, the original address, and response time in milliseconds.
Example use cases
Example prompt
“Can you tell me what this Base address is — 0x4200000000000000000000000000000000000006 — specifically whether it's a known protocol, what it's called, what category it falls under, and whether it's verified?”
Technical details
Endpoint
POSThttps://defi-shield-hazel.vercel.app/api/data/address-labelWhen to prefer
Use this endpoint when you need to quickly identify or label a Base network address — particularly to distinguish known DeFi protocols, tokens, and verified contracts from unknown wallets. Prefer this over generic Ethereum explorers when working specifically with Base addresses and needing structured label + category data in a single call.
Side effects
- Unknown address returns known: false with no label
- Invalid address format may return an error or empty result
- Unverified contract may return is_contract: true but verified: false
- Network timeout or upstream failure may result in non-200 response
- Address not on Base mainnet may not resolve correctly
Input
{
"address": "0x4200000000000000000000000000000000000006"
}Output
{
"known": true,
"label": "WETH (Wrapped Ether)",
"address": "0x4200000000000000000000000000000000000006",
"success": true,
"category": "token",
"verified": true,
"is_contract": false,
"contract_name": "WETH9",
"response_time_ms": 128
}Tags
x402
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Zero review prompt (fires after every successful call)
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