Build an NFT Portfolio Viewer

• Fetch a wallet’s total NFT value broken down by chain
• List NFT collections sorted by floor value
• Drill into individual NFT positions with metadata
• Filter by specific collections

NFT value by chain:
  ethereum: $1,820.50
  polygon:  $37.56

Collections:
  Bored Ape Yacht Club:  1 NFT(s) - floor value $1,802.40
  Art Blocks Curated:    2 NFT(s) - floor value $55.11
  Polygon Apes:          3 NFT(s) - floor value $37.56

Individual NFTs:
  Bored Ape #7495 (Bored Ape Yacht Club)  - $1,802.40
  Chromie Squiggle #4821 (Art Blocks)     - $37.55
  Fidenza #479 (Art Blocks)               - $17.56
  Polygon Ape #102 (Polygon Apes)         - $12.52

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Prerequisites

• A Zerion API key (get one here)
• A wallet address to query

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Steps

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Next steps

• Use pagination to handle wallets with large NFT collections
• Include the nft_collections relationship in the include parameter to get full collection metadata in one request
• Combine with the transactions endpoint to track NFT purchase and sale history