NEAR Protocol non-fungible-tokens API

openapi: 3.0.3
info:
  description: Low-latency indexed account, token, and public-key lookup APIs for wallets and explorers. Embedded portal clients may forward an optional `apiKey` query parameter, but the public FastNEAR API does not require it.
  title: FastNEAR accounts non-fungible-tokens API
  version: 3.0.3
servers:
- description: Mainnet
  url: https://api.fastnear.com
- description: Testnet
  url: https://test.api.fastnear.com
tags:
- name: non-fungible-tokens
paths:
  /v0/account/{account_id}/nft:
    get:
      description: Fetch the NFT contract IDs an account has held — contract IDs only, no block-height metadata.
      operationId: account_nft_v0
      parameters:
      - description: NEAR account ID to inspect.
        example: sharddog.near
        in: path
        name: account_id
        required: true
        schema:
          type: string
      - description: Optional API key forwarded by embedded portal clients. The public FastNEAR API does not require it.
        in: query
        name: apiKey
        required: false
        schema:
          type: string
      responses:
        '200':
          content:
            application/json:
              example:
                account_id: sharddog.near
                contract_ids:
                - nft.example.near
              schema:
                $ref: '#/components/schemas/V0ContractsResponse'
          description: NFT contract IDs for the requested account
        '400':
          content:
            application/json:
              schema:
                type: string
          description: Bad Request
        '500':
          content:
            application/json:
              schema:
                type: string
          description: Internal Server Error
      summary: Lookup NFT contract IDs for an account
      tags:
      - non-fungible-tokens
      x-fastnear-slug: account_nft
      x-fastnear-title: FastNEAR API - V0 Account NFT
  /v1/account/{account_id}/nft:
    get:
      description: Fetch NFT contract rows for an account, including block-height metadata for each contract.
      operationId: account_nft_v1
      parameters:
      - description: NEAR account ID to inspect.
        example: sharddog.near
        in: path
        name: account_id
        required: true
        schema:
          type: string
      - description: Optional API key forwarded by embedded portal clients. The public FastNEAR API does not require it.
        in: query
        name: apiKey
        required: false
        schema:
          type: string
      responses:
        '200':
          content:
            application/json:
              example:
                account_id: sharddog.near
                tokens:
                - contract_id: nft.example.near
                  last_update_block_height: null
              schema:
                $ref: '#/components/schemas/V1NftResponse'
          description: Indexed NFT contract rows for the requested account
        '400':
          content:
            application/json:
              schema:
                type: string
          description: Bad Request
        '500':
          content:
            application/json:
              schema:
                type: string
          description: Internal Server Error
      summary: Lookup indexed NFT contract rows for an account
      tags:
      - non-fungible-tokens
      x-fastnear-slug: account_nft
      x-fastnear-title: FastNEAR API - V1 Account NFT
components:
  schemas:
    NftRow:
      additionalProperties: false
      properties:
        contract_id:
          type: string
        last_update_block_height:
          format: uint64
          minimum: 0
          nullable: true
          type: integer
      required:
      - contract_id
      - last_update_block_height
      type: object
    V0ContractsResponse:
      additionalProperties: false
      properties:
        account_id:
          type: string
        contract_ids:
          items:
            type: string
          type: array
      required:
      - account_id
      - contract_ids
      type: object
    V1NftResponse:
      additionalProperties: false
      properties:
        account_id:
          type: string
        tokens:
          items:
            $ref: '#/components/schemas/NftRow'
          type: array
      required:
      - account_id
      - tokens
      type: object