Add endpoint for retrieving principal’s NFTs and their metadata

[markmhendrickson]

The wallet team needs an ability to query for a principal's NFTs and their metadata for leather-io/extension#1028.

• Option 1: New endpoint

  Suggested endpoint path,

  /extended/v1/address/{principal}/nfts

  Response,

  {
    "limit": 1,
    "offset": 0,
    "total": 500,
    "results": [
      {
        "token_uri": "https://pool.friedger.de/nft.json",
        "name": "Friedger Pool",
        "description": "Enjoying the stacking pool.",
        "image_uri": "https://pool.friedger.de/nft.webp",
        "image_canonical_uri": "https://pool.friedger.de/nft.webp",
        "tx_id": "0xef2ac1126e16f46843228b1dk4830e19eb7599129e4jf392cab9e65ae83a45c0",
        "sender_address": "ST399W7Z9WS0GMSNQGJGME5JAENKN56D65VGMGKGA"
      }
    ]
  }

• Option 2: Add param to return NFT metadata to existing “Non-Fungible Token holdings”

  The Non-Fungible Token holdings endpoint returns NFTs held by a principal. However, it only returns the NFT’s hex and repr. Would be great to have an additional param to request the NFTs’ metadata too.

cc @edu-stx

[zone117x]

Hey @markmhx! An NFT metadata indexing service has been deemed out-of-scope as a responsibility of the API, and is being implemented as a separate service. See issue #1222

The current WIP code for this service is in this repo: https://github.com/hirosystems/token-metadata-service
As Sarala mentioned, it's not yet production tested or deployed in Hiro infra. However, nothing stops someone else from running the service themselves.

[markmhendrickson]

Thanks! Is there any sense on when Hiro might get this tested and deployed on its infrastructure?

[rafaelcr]

This is now resolved