How can I view 0xd9c933d7's crypto portfolio?

You can view the full portfolio of 0xd9c933d7 (0xd9c9571ebbf95cb40d80346a945c81af760533d7) on Zerion at https://app.zerion.io/0xd9c9571ebbf95cb40d80346a945c81af760533d7/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.