openapi: 3.0.3
info:
  title: D&B Direct+ Authentication Search 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: Search
  description: Find companies, principals, and related entities.
paths:
  /v1/search/criteria:
    get:
      tags:
      - Search
      summary: Search Companies By Criteria
      description: Find companies matching free-form criteria such as name, address, registration number, industry, or contact. Returns a paginated list of candidate records intended for browse-and-pick workflows rather than authoritative match.
      operationId: searchCompaniesByCriteria
      security:
      - bearerAuth: []
      parameters:
      - name: searchTerm
        in: query
        schema:
          type: string
      - name: countryISOAlpha2Code
        in: query
        schema:
          type: string
      - name: pageNumber
        in: query
        schema:
          type: integer
          minimum: 1
          default: 1
      - name: pageSize
        in: query
        schema:
          type: integer
          minimum: 1
          maximum: 50
          default: 50
      responses:
        '200':
          description: Search results.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/SearchResponse'
        '401':
          $ref: '#/components/responses/Unauthorized'
  /v1/search/contact:
    get:
      tags:
      - Search
      summary: Search Contacts By Criteria
      description: Find named principals or contacts (executives, beneficial owners, decision-makers) matching the supplied criteria, returning a paginated candidate list.
      operationId: searchContacts
      security:
      - bearerAuth: []
      parameters:
      - name: searchTerm
        in: query
        schema:
          type: string
      - name: countryISOAlpha2Code
        in: query
        schema:
          type: string
      - name: pageSize
        in: query
        schema:
          type: integer
          minimum: 1
          maximum: 50
          default: 50
      responses:
        '200':
          description: Contact search results.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ContactSearchResponse'
components:
  schemas:
    OrganizationSummary:
      type: object
      properties:
        duns:
          type: string
          pattern: ^[0-9]{9}$
        primaryName:
          type: string
        primaryAddress:
          $ref: '#/components/schemas/Address'
        countryISOAlpha2Code:
          type: string
        telephone:
          type: array
          items:
            type: object
            properties:
              telephoneNumber:
                type: string
        registrationNumbers:
          type: array
          items:
            type: object
            properties:
              registrationNumber:
                type: string
              typeDescription:
                type: string
    SearchResponse:
      type: object
      properties:
        transactionDetail:
          $ref: '#/components/schemas/TransactionDetail'
        candidatesReturnedQuantity:
          type: integer
        candidatesMatchedQuantity:
          type: integer
        searchCandidates:
          type: array
          items:
            type: object
            properties:
              organization:
                $ref: '#/components/schemas/OrganizationSummary'
    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
    ContactSearchResponse:
      type: object
      properties:
        transactionDetail:
          $ref: '#/components/schemas/TransactionDetail'
        candidatesReturnedQuantity:
          type: integer
        searchCandidates:
          type: array
          items:
            type: object
            properties:
              contact:
                type: object
                properties:
                  fullName:
                    type: string
                  jobTitles:
                    type: array
                    items:
                      type: object
                      properties:
                        title:
                          type: string
              organization:
                $ref: '#/components/schemas/OrganizationSummary'
    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
  responses:
    Unauthorized:
      description: Missing or invalid bearer token.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      bearerFormat: JWT
    basicAuth:
      type: http
      scheme: basic