Query DeFi portfolio data across 50+ chains via Zapper's GraphQL API. Use when the user wants to check wallet balances, DeFi positions, NFT holdings, token prices, or transaction history. Supports Base, Ethereum, Polygon, Arbitrum, Optimism, and more. Requires ZAPPER_API_KEY.

通过 Zapper 的 GraphQL API 查询跨 50 多条链的 DeFi 资产数据，适用于查看钱包余额、DeFi 头寸、NFT 持仓、代币价格或交易记录，支持 Base、Ethereum、Polygon、Arbitrum、Optimism 等网络，需提供 ZAPPER_API_KEY