How can I view onlybuyeth's crypto portfolio?

You can view the full portfolio of onlybuyeth (0x89a418a0d5d700b690dfc4b2a5ff6ca64fc16ee8) on Zerion at https://app.zerion.io/0x89a418a0d5d700b690dfc4b2a5ff6ca64fc16ee8/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.