07.01.2026 - NFT collection `implementations` field

Added

Added implementations array to the nft_collections resource that exposes contract addresses for NFT collections.

Details

The nft_collections resource now includes an implementations field containing blockchain deployment information:

{
  "type": "nft_collections",
  "id": "123",
  "attributes": {
    "metadata": { ... },
    "market_data": { ... },
    "implementations": [
      {
        "chain_id": "ethereum",
        "address": "0xbc4ca0eda7647a8ab7c2061c2e118a18a936f13d"
      }
    ]
  }
}

Behavior:

• Only present for single-chain collections with a contract address
• Omitted for multi-chain collections or collections without contract addresses
• Available across all NFT-related endpoints:
  • GET /wallets/:address/nft-collections
  • GET /wallets/:address/nft-positions (included resources)
  • GET /nfts and GET /nfts/:id (included resources)

Note: The nested collection_info field within wallet_nft_collections does not include implementations, as this is descriptive metadata only.