How can I view mjattkurfeth's crypto portfolio?

You can view the full portfolio of mjattkurfeth (0xa31e78358c267cc1041a68fbc7ee7ede04e82ee2) on Zerion at https://app.zerion.io/0xa31e78358c267cc1041a68fbc7ee7ede04e82ee2/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.