How can I view 0xffe509c1's crypto portfolio?

You can view the full portfolio of 0xffe509c1 (0xffe585b52885473b0678d97fb81f91042e0d09c1) on Zerion at https://app.zerion.io/0xffe585b52885473b0678d97fb81f91042e0d09c1/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.