openapi: 3.0.3
info:
  title: D&B Direct+ Authentication Research 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: Research
  description: Retrieve historical responses for audit and reconciliation.
paths:
  /v2/audit/duns/{duns}:
    get:
      tags:
      - Research
      summary: Retrieve Historical Audit Record
      description: Retrieve a historical Direct+ response previously returned for a D-U-N-S Number, supporting audit, dispute, and reconciliation use cases.
      operationId: getAuditRecord
      security:
      - bearerAuth: []
      parameters:
      - name: duns
        in: path
        required: true
        schema:
          type: string
          pattern: ^[0-9]{9}$
      - name: transactionTimestamp
        in: query
        required: true
        schema:
          type: string
          format: date-time
      responses:
        '200':
          description: Historical record.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/AuditResponse'
        '404':
          $ref: '#/components/responses/NotFound'
components:
  schemas:
    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
    TransactionDetail:
      type: object
      properties:
        transactionID:
          type: string
        transactionTimestamp:
          type: string
          format: date-time
        inLanguage:
          type: string
        serviceVersion:
          type: string
    AuditResponse:
      type: object
      properties:
        duns:
          type: string
        transactionTimestamp:
          type: string
          format: date-time
        originalResponse:
          type: object
  responses:
    NotFound:
      description: Resource not found for the supplied identifier.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      bearerFormat: JWT
    basicAuth:
      type: http
      scheme: basic