How can I view 0x3cf42e41's crypto portfolio?

You can view the full portfolio of 0x3cf42e41 (0x3cf4d506a15e62f4eb8fdc823772ccd40a8d2e41) on Zerion at https://app.zerion.io/0x3cf4d506a15e62f4eb8fdc823772ccd40a8d2e41/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.