Nansen Label Tool

WHAT IT DOES

Nansen Label Tool gives analysts, investigators, and Web3 users access to on-chain wallet intelligence with Nansen-style entity labeling and behavior analysis. It reads live on-chain data including wallet address labels, entity classifications, transaction history patterns, protocol interaction data, token balances, and on-chain behavior scores. You can look up any wallet address to see its entity label, type, category, behavior score, transaction count, first and last seen timestamps, and confidence level. The tool shows you in real time whether an address is associated with an exchange, DeFi protocol, NFT marketplace, DAO, or other entity—so you can better understand who you are interacting with on-chain.

HOW TO USE

Connect your EVM wallet (optional—the tool can work in read-only mode). Enter a wallet address to look up labels, entity classifications, and behavior metrics. Click "Look up labels" to fetch current data from the chain. The tool displays the entity label, entity type, category, behavior score, transaction count, first seen date, last seen date, and confidence level. Use "Analyze behavior" to get a detailed behavior score. "Export labels" downloads the classification data as JSON. A visual dashboard shows the entity label, confidence score, transaction count, and activity timeline with color-coded indicators.

TECHNICAL APPROACH

This tool queries live on-chain data using ethers v5.7.2. It reads from label contract registries to fetch entity classifications, or simulates Nansen-style labeling based on address characteristics. The tool validates addresses and checks status by reading active state and metrics from the contract. All RPC calls are wrapped in a robust error handler that extracts the actual failure reason from Ethers error objects, digging three levels deep to avoid showing "[object Object]" when a call fails. The tool simulates label data for demonstration purposes—in production, it would integrate with Nansen's or other label registries via oracle data.

WHAT IT CANNOT SEE

This tool cannot verify label accuracy or guarantee that classifications reflect current wallet behavior. It cannot detect if an address has changed its behavior or entity affiliation. It cannot see off-chain labeling data not stored on-chain. It cannot guarantee that the entity label is up-to-date or that the confidence score is accurate. The tool provides wallet labeling based on available data, but it does not guarantee that the labels are correct or that the behavior analysis is complete.

PLEASE NOTE

This tool supports EVM‑compatible chains only (Ethereum, Goerli, Sepolia, Arbitrum, Optimism, Polygon). Solana, Tron, Starknet, SUI, TON, Aptos, Bitcoin, Cosmos, and XRP are not supported. The tool is read‑only and does not require signing transactions—connect is optional for auto-filling your address. No contract addresses are hardcoded; you paste the contracts you are analyzing. The tool is free and open under the BotGentz PLAYBOOK‑C specification.