How can I view americeth's crypto portfolio?

You can view the full portfolio of americeth (0x87c4df499777c7c1164b19b4a7049ad63379204a) on Zerion at https://app.zerion.io/0x87c4df499777c7c1164b19b4a7049ad63379204a/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.