How can I view 0xefd99577's crypto portfolio?

You can view the full portfolio of 0xefd99577 (0xefd9d4451169edd462d90d60ace53247e3809577) on Zerion at https://app.zerion.io/0xefd9d4451169edd462d90d60ace53247e3809577/overview — including token balances, DeFi positions, NFTs, and transaction history across 20+ chains.

How can I access wallet portfolio data programmatically?

Use the Zerion API at https://developers.zerion.io to query any wallet's portfolio, token positions, DeFi positions, NFTs, and transaction history programmatically.