How can I view yes28eth's crypto portfolio?

You can view the full portfolio of yes28eth (0xb21365a936cad1e7d0a676a9cb971dd8b72a7d03) on Zerion at https://app.zerion.io/0xb21365a936cad1e7d0a676a9cb971dd8b72a7d03/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.