How can I view 0x5f1f3a8e's crypto portfolio?

You can view the full portfolio of 0x5f1f3a8e (0x5f1f8f2d819129f0cc7af681e223ac546cd83a8e) on Zerion at https://app.zerion.io/0x5f1f8f2d819129f0cc7af681e223ac546cd83a8e/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.