How can I view 0xb30c9754's crypto portfolio?

You can view the full portfolio of 0xb30c9754 (0xb30cfcb8da39673076db77a68c406ccb5ea69754) on Zerion at https://app.zerion.io/0xb30cfcb8da39673076db77a68c406ccb5ea69754/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.