How can I view 661401eth's crypto portfolio?

You can view the full portfolio of 661401eth (0x97dbf4d74fccca9767d9243a1380adfc000c3638) on Zerion at https://app.zerion.io/0x97dbf4d74fccca9767d9243a1380adfc000c3638/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.