How can I view 0xc9cf5fb3's crypto portfolio?

You can view the full portfolio of 0xc9cf5fb3 (0xc9cfac6c2f39ac6c6f8440382dc3590053ba5fb3) on Zerion at https://app.zerion.io/0xc9cfac6c2f39ac6c6f8440382dc3590053ba5fb3/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.