openapi: 3.0.3
info:
  title: D&B Direct+ Authentication Enrich API
  description: D&B Direct+ is Dun & Bradstreet's RESTful API platform that exposes the D&B Data Cloud — more than 500 million companies worldwide — for identity resolution, search, enrichment, multi-process (match plus enrich), batch processing, change monitoring, and historical research. All endpoints return JSON, are versioned in the URI path, and require an OAuth 2.0 bearer token obtained from the /v3/token endpoint via client-credentials grant. This profile is an OpenAPI sketch of the public surface based on Dun & Bradstreet's published Direct+ documentation; the canonical operation definitions live behind the gated developer portal at https://directplus.documentation.dnb.com/.
  version: '3.0'
  contact:
    name: D&B Direct+ Support
    url: https://service.dnb.com/
  termsOfService: https://www.dnb.com/utility-pages/terms-of-use.html
  license:
    name: Proprietary
    url: https://www.dnb.com/utility-pages/terms-of-use.html
servers:
- url: https://plus.dnb.com
  description: Production
tags:
- name: Enrich
  description: Retrieve Data Blocks for a known D-U-N-S Number.
paths:
  /v1/data/duns/{duns}:
    get:
      tags:
      - Enrich
      summary: Retrieve Data Blocks For D-U-N-S
      description: Retrieve one or more Data Blocks for a given D-U-N-S Number. The caller specifies which blocks (Company Information, Principals & Contacts, Hierarchy & Connections, Financial Strength, Risk & Compliance, Beneficial Ownership, ESG, etc.) to include via the blockIDs query parameter. Each block is independently versioned.
      operationId: getDataBlocksByDuns
      security:
      - bearerAuth: []
      parameters:
      - name: duns
        in: path
        required: true
        schema:
          type: string
          pattern: ^[0-9]{9}$
        description: Nine-digit D-U-N-S Number.
      - name: blockIDs
        in: query
        required: true
        schema:
          type: string
        description: Comma-separated list of block IDs with version (e.g. companyinfo_L2_v1,principalscontacts_L1_v2).
      - name: tradeUp
        in: query
        schema:
          type: string
          enum:
          - hq
      responses:
        '200':
          description: Requested data blocks for the D-U-N-S Number.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/EnrichResponse'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
components:
  responses:
    NotFound:
      description: Resource not found for the supplied identifier.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
    Unauthorized:
      description: Missing or invalid bearer token.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
  schemas:
    EnrichResponse:
      type: object
      properties:
        transactionDetail:
          $ref: '#/components/schemas/TransactionDetail'
        inquiryDetail:
          type: object
        organization:
          type: object
          properties:
            duns:
              type: string
            primaryName:
              type: string
            primaryAddress:
              $ref: '#/components/schemas/Address'
            registrationNumbers:
              type: array
              items:
                type: object
            corporateLinkage:
              type: object
            financials:
              type: array
              items:
                type: object
            principals:
              type: array
              items:
                type: object
            beneficialOwnership:
              type: object
            riskAssessment:
              type: object
    Error:
      type: object
      properties:
        transactionDetail:
          $ref: '#/components/schemas/TransactionDetail'
        error:
          type: object
          properties:
            errorMessage:
              type: string
            errorCode:
              type: string
            errorDetails:
              type: array
              items:
                type: object
    Address:
      type: object
      properties:
        streetAddress:
          type: object
          properties:
            line1:
              type: string
            line2:
              type: string
        addressLocality:
          type: object
          properties:
            name:
              type: string
        addressRegion:
          type: object
          properties:
            name:
              type: string
            abbreviatedName:
              type: string
        postalCode:
          type: string
        addressCountry:
          type: object
          properties:
            isoAlpha2Code:
              type: string
    TransactionDetail:
      type: object
      properties:
        transactionID:
          type: string
        transactionTimestamp:
          type: string
          format: date-time
        inLanguage:
          type: string
        serviceVersion:
          type: string
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      bearerFormat: JWT
    basicAuth:
      type: http
      scheme: basic