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OpenAPI Specification

openapi: 3.2.0
info:
  title: Uniblock Direct Direct Pass-Through NF Ts API
  description: The Uniblock Direct API gives developers pass-through access to provider-specific endpoints exactly as offered by upstream blockchain data providers. Requests follow the pattern of specifying the provider and optional prefix in the URL path, while still benefiting from Uniblock's routing, retry, and failover infrastructure. Results are returned exactly as they would be if the first-party provider endpoint was called directly. This is intended for use cases where a specific method is not yet abstracted into the Unified API.
  version: '1.0'
  contact:
    name: Uniblock Support
    url: https://docs.uniblock.dev
  termsOfService: https://uniblock.dev/terms
servers:
- url: https://api.uniblock.dev/direct/v1
  description: Uniblock Direct API Production Server
security:
- apiKeyHeader: []
tags:
- name: NFTs
  description: Endpoints for retrieving non-fungible token data including balances, metadata, transfers, and collection information.
paths:
  /nft/balance:
    get:
      operationId: getNftBalance
      summary: Get NFT Balances
      description: Retrieves the NFT balances held by a specific wallet address, returning a list of NFTs owned including collection and token identifiers.
      tags:
      - NFTs
      parameters:
      - $ref: '#/components/parameters/chainParam'
      - $ref: '#/components/parameters/walletAddressParam'
      - $ref: '#/components/parameters/limitParam'
      - $ref: '#/components/parameters/cursorParam'
      responses:
        '200':
          description: Successful response with NFT balances
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/NftBalanceResponse'
        '400':
          description: Bad request - invalid parameters
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
        '401':
          description: Unauthorized - missing or invalid API key
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
  /nft/metadata:
    get:
      operationId: getNftMetadata
      summary: Get NFT Metadata
      description: Retrieves detailed metadata for a specific NFT including name, description, image URL, attributes, and trait information.
      tags:
      - NFTs
      parameters:
      - $ref: '#/components/parameters/chainParam'
      - $ref: '#/components/parameters/contractAddressParam'
      - name: tokenId
        in: query
        required: true
        description: The token ID of the specific NFT within the collection.
        schema:
          type: string
      responses:
        '200':
          description: Successful response with NFT metadata
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/NftMetadataResponse'
        '400':
          description: Bad request - invalid parameters
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
        '401':
          description: Unauthorized - missing or invalid API key
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
        '404':
          description: NFT not found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
  /nft/collection-metadata:
    get:
      operationId: getNftCollectionMetadata
      summary: Get NFT Collection Metadata
      description: Retrieves metadata about an NFT collection including name, description, total supply, floor price, and other collection-level attributes.
      tags:
      - NFTs
      parameters:
      - $ref: '#/components/parameters/chainParam'
      - $ref: '#/components/parameters/contractAddressParam'
      responses:
        '200':
          description: Successful response with collection metadata
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/NftCollectionMetadataResponse'
        '400':
          description: Bad request - invalid parameters
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
        '401':
          description: Unauthorized - missing or invalid API key
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
  /nft/transfers:
    get:
      operationId: getNftTransfers
      summary: Get NFT Transfers
      description: Retrieves a list of NFT transfer events for a specific wallet address or contract, including mints, sales, and transfers between addresses.
      tags:
      - NFTs
      parameters:
      - $ref: '#/components/parameters/chainParam'
      - $ref: '#/components/parameters/walletAddressParam'
      - $ref: '#/components/parameters/limitParam'
      - $ref: '#/components/parameters/cursorParam'
      responses:
        '200':
          description: Successful response with NFT transfers
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/NftTransfersResponse'
        '400':
          description: Bad request - invalid parameters
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
        '401':
          description: Unauthorized - missing or invalid API key
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
components:
  schemas:
    NftTransfer:
      type: object
      description: A single NFT transfer event between two addresses.
      properties:
        transactionHash:
          type: string
          description: The hash of the transaction containing this transfer.
        from:
          type: string
          description: The sender address.
        to:
          type: string
          description: The recipient address.
        contractAddress:
          type: string
          description: The smart contract address of the NFT collection.
        tokenId:
          type: string
          description: The token ID of the transferred NFT.
        blockNumber:
          type: integer
          description: The block number in which the transfer occurred.
        blockTimestamp:
          type: string
          format: date-time
          description: The timestamp of the block in which the transfer occurred.
    ErrorResponse:
      type: object
      description: Standard error response returned when a request fails.
      properties:
        success:
          type: boolean
          description: Indicates whether the request was successful.
          example: false
        error:
          type: object
          description: Error details object.
          properties:
            code:
              type: string
              description: Machine-readable error code.
            message:
              type: string
              description: Human-readable error message describing what went wrong.
    NftMetadataResponse:
      type: object
      description: Response containing detailed metadata for a specific NFT.
      properties:
        success:
          type: boolean
          description: Indicates whether the request was successful.
        data:
          type: object
          description: Detailed NFT metadata.
          properties:
            contractAddress:
              type: string
              description: The smart contract address of the NFT collection.
            tokenId:
              type: string
              description: The unique token ID within the collection.
            name:
              type: string
              description: The name of the NFT.
            description:
              type: string
              description: A description of the NFT.
            imageUrl:
              type: string
              format: uri
              description: URL to the NFT image.
            animationUrl:
              type: string
              format: uri
              description: URL to the NFT animation or media file.
            tokenType:
              type: string
              description: The token standard type.
            attributes:
              type: array
              description: List of trait attributes for the NFT.
              items:
                type: object
                properties:
                  traitType:
                    type: string
                    description: The name of the trait category.
                  value:
                    type: string
                    description: The value of the trait.
    NftTransfersResponse:
      type: object
      description: Response containing a paginated list of NFT transfer events.
      properties:
        success:
          type: boolean
          description: Indicates whether the request was successful.
        data:
          type: array
          description: List of NFT transfer events.
          items:
            $ref: '#/components/schemas/NftTransfer'
        cursor:
          type: string
          description: Pagination cursor for the next page of results.
    NftAsset:
      type: object
      description: An NFT asset with basic identifying information.
      properties:
        contractAddress:
          type: string
          description: The smart contract address of the NFT collection.
        tokenId:
          type: string
          description: The unique token ID within the collection.
        name:
          type: string
          description: The name of the NFT.
        tokenType:
          type: string
          description: The token standard type (e.g., ERC-721, ERC-1155).
          enum:
          - ERC-721
          - ERC-1155
        imageUrl:
          type: string
          format: uri
          description: URL to the NFT image.
        collectionName:
          type: string
          description: The name of the parent collection.
    NftCollectionMetadataResponse:
      type: object
      description: Response containing metadata about an NFT collection.
      properties:
        success:
          type: boolean
          description: Indicates whether the request was successful.
        data:
          type: object
          description: NFT collection metadata.
          properties:
            contractAddress:
              type: string
              description: The smart contract address of the collection.
            name:
              type: string
              description: The name of the collection.
            description:
              type: string
              description: A description of the collection.
            symbol:
              type: string
              description: The symbol of the collection.
            totalSupply:
              type: integer
              description: The total number of NFTs in the collection.
            imageUrl:
              type: string
              format: uri
              description: URL to the collection image.
            floorPrice:
              type: number
              format: double
              description: The current floor price of the collection.
            chain:
              type: string
              description: The blockchain network the collection exists on.
    NftBalanceResponse:
      type: object
      description: Response containing NFTs owned by a wallet address.
      properties:
        success:
          type: boolean
          description: Indicates whether the request was successful.
        data:
          type: array
          description: List of NFTs held by the address.
          items:
            $ref: '#/components/schemas/NftAsset'
        cursor:
          type: string
          description: Pagination cursor for the next page of results.
  parameters:
    limitParam:
      name: limit
      in: query
      description: Maximum number of results to return per page.
      schema:
        type: integer
        minimum: 1
        maximum: 100
        default: 25
    chainParam:
      name: chain
      in: query
      required: true
      description: The blockchain network identifier (e.g., ethereum, polygon, solana, bsc, arbitrum, optimism, avalanche, base).
      schema:
        type: string
        examples:
        - ethereum
        - polygon
        - solana
    cursorParam:
      name: cursor
      in: query
      description: Pagination cursor for retrieving the next page of results.
      schema:
        type: string
    walletAddressParam:
      name: address
      in: query
      required: true
      description: The wallet address to query data for.
      schema:
        type: string
    contractAddressParam:
      name: contractAddress
      in: query
      required: true
      description: The smart contract address of the token.
      schema:
        type: string
  securitySchemes:
    apiKeyHeader:
      type: apiKey
      in: header
      name: x-api-key
      description: Uniblock project API key passed as a header. If no provider-specific authentication is passed in the request, Uniblock will use the credentials stored in the project associated with this API key.
externalDocs:
  description: Uniblock Direct API Documentation
  url: https://docs.uniblock.dev/docs/direct-api-overview