How can I view 0x9ffe51a9's crypto portfolio?

You can view the full portfolio of 0x9ffe51a9 (0x9ffe14c4d9d6f4b35850226e091eb06f6dff51a9) on Zerion at https://app.zerion.io/0x9ffe14c4d9d6f4b35850226e091eb06f6dff51a9/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.