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EVM Wallet Address Labeler & Contract Identifier
x402
EVM Wallet Address Labeler & Contract Identifier is a paid API for AI agents from x402.agentutility.ai, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).
Identifies and labels EVM addresses as known entities (CEX/DEX wallets, bridges, NFT marketplaces, MEV bots, stablecoins) and detects whether an address is a contract plus its deployer
Price / call$0.005
Success—
StatusUnknown
How this service works
Identifies well-known EVM addresses: CEX hot/cold wallets, DEX routers, NFT marketplaces, popular MEV bots, bridges, and stablecoins. Best-effort labelling against an in-handler dictionary; Etherscan v2 'getcontractcreation' adds is_contract + deployer for unknown contracts. Returns label, category, and the source of the match. Use it as a wallet label, address tagger, known-address lookup, EOA-vs-contract check, or deployer tracer.
Output
Returns a label (human-readable name for the address), a category (e.g. CEX hot wallet, DEX router, NFT marketplace, MEV bot, bridge, stablecoin), the source of the match (internal dictionary or Etherscan), an is_contract boolean, and the deployer address for contract addresses not found in the dictionary.
Example use cases
Identify suspicious transaction counterparty
“I'm seeing a large outflow to 0x3fC91A3afd70395Cd496C647d5a6CC9D4B2b7FAD in my wallet history — can you tell me what that address is, what category it falls under, and whether it's a known protocol?”
Trace smart contract deployer
“I need to find out who deployed the contract at 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D and whether it's a recognized DeFi entity like a DEX router.”
Flag known MEV bot in transaction
“Flag this address for me: 0x00000000003b3cc22aF3aE1EAc0440BcEe416B40 — is it a known MEV bot, bridge, or some other labeled entity on-chain?”
Technical details
Endpoint
POSThttps://x402.agentutility.ai/wallet-labelWhen to prefer
Use this endpoint when you need fast, cheap labeling of EVM addresses against a curated dictionary of well-known entities (CEXs, DEXs, bridges, MEV bots, stablecoins, NFT marketplaces) and also want EOA-vs-contract detection with deployer tracing for unknowns. Prefer this over raw Etherscan lookups when you need structured, categorized labels rather than raw blockchain data, and when cost per lookup matters at scale ($0.005 USDC).
Side effects
- Unknown address returns no label with best-effort fallback to Etherscan contract creation data
- Etherscan v2 API unavailable may result in missing is_contract or deployer fields
- Non-EVM or malformed address input returns error
- Rate limits or payment failure (x402) prevents response
- Very new contracts may not yet be indexed by Etherscan
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"chain": "ethereum",
"label": "Unknown EOA",
"source": "etherscan",
"address": "0x6c0752c09e7f6fa6526fcdf40e456a159ebb5621",
"category": "unknown",
"deployer": null,
"creation_tx": null,
"is_contract": false
}
}Tags
x402
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