How can I view neptune49528eth's crypto portfolio?

You can view the full portfolio of neptune49528eth (0xc57cfd16526abb402b9cc82a423ff79ac691a66c) on Zerion at https://app.zerion.io/0xc57cfd16526abb402b9cc82a423ff79ac691a66c/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.