How can I view 0x915c91d5's crypto portfolio?

You can view the full portfolio of 0x915c91d5 (0x915cb9ef5a35efd6e4b2727e1727760bb64891d5) on Zerion at https://app.zerion.io/0x915cb9ef5a35efd6e4b2727e1727760bb64891d5/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.