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x402node Wallet Label & Address Classifier
x402
x402node Wallet Label & Address Classifier is a paid API for AI agents from api.x402node.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-16).
Returns heuristic on-chain labels for any EVM address, classifying it as contract vs EOA, assigning an activity tier, balance band, and transaction count profile.
Price / call$0.005
Success—
StatusUnknown
How this service works
Heuristic on-chain labels for any address - contract vs EOA, activity tier, balance band and transaction count - on EVM chains. wallet label, address classification, eoa or contract, wallet activity, address profile, wallet tag, address label, onchain identity, smart money Accepts payment on Base or Solana — either network works.
Output
Returns a structured label for the given EVM address including: contract vs EOA flag, activity tier (e.g. dormant/low/medium/high), balance band (e.g. dust/small/mid/whale), and approximate transaction count — all derived from heuristic on-chain analysis.
Example use cases
Example prompt
“Can you classify the address 0x3fC91A3afd70395Cd496C647d5a6CC9D4B2b7FAD on Ethereum — is it a contract or a regular wallet, and what's its activity tier and balance band?”
Technical details
Endpoint
GEThttps://api.x402node.dev/chain/wallet-label?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a quick heuristic classification of any EVM wallet or contract address — especially to segment users, filter bots, assess counterparty risk, or enrich address data before deeper analysis. Prefer this over full transaction graph endpoints when you just need a lightweight label rather than full history.
Side effects
- Invalid or malformed address returns a 400 error
- Unsupported chain identifier returns an error or empty result
- Address with zero history may return minimal or default tier labels
- Rate limiting or payment failure returns a 402 response
- Very new addresses may have incomplete on-chain data
Input
{
"chain": "ethereum",
"address": "0x3fC91A3afd70395Cd496C647d5a6CC9D4B2b7FAD"
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Output
{
"note": "Heuristic on-chain labels (no off-chain identity).",
"type": "contract",
"_hint": "x402 paid endpoints for AI agents — x402node.dev (utilities) · cn402.com (Chinese culture)",
"chain": "ethereum",
"labels": [
"contract",
"zero_native_balance"
],
"address": "0x3fC91A3afd70395Cd496C647d5a6CC9D4B2b7FAD",
"txCount": 1,
"nativeBalance": "0"
}Tags
x402
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Zero review prompt (fires after every successful call)
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