How can I view mahd78eth's crypto portfolio?

You can view the full portfolio of mahd78eth (0xdb21b58c882b08ef367d2336aed9e234a9fb9b20) on Zerion at https://app.zerion.io/0xdb21b58c882b08ef367d2336aed9e234a9fb9b20/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.