openapi: 3.0.3
info:
  title: Microsoft Dynamics 365 Business Central Accounts Companies API
  description: The Microsoft Dynamics 365 Business Central API (v2.0) provides a RESTful interface for integrating with Business Central. It exposes standard business entities such as customers, vendors, items, sales orders, purchase orders, journals, and general ledger entries. The API uses OData v4 conventions and requires Microsoft Entra ID (Azure AD) authentication.
  version: '2.0'
  contact:
    name: Microsoft
    url: https://learn.microsoft.com/en-us/dynamics365/business-central/dev-itpro/api-reference/v2.0/
  license:
    name: Microsoft APIs Terms of Use
    url: https://learn.microsoft.com/en-us/legal/microsoft-apis/terms-of-use
servers:
- url: https://api.businesscentral.dynamics.com/v2.0/{tenantId}/{environment}/api/v2.0
  description: Business Central Online (SaaS)
  variables:
    tenantId:
      default: common
      description: The Azure AD tenant ID or domain name.
    environment:
      default: production
      description: The Business Central environment name.
- url: https://{baseUrl}:{port}/{serverInstance}/api/v2.0
  description: Business Central On-Premises
  variables:
    baseUrl:
      default: localhost
    port:
      default: '7048'
    serverInstance:
      default: bc
security:
- oauth2: []
tags:
- name: Companies
paths:
  /companies:
    get:
      summary: Microsoft Dynamics List companies
      description: Returns a list of companies available in the Business Central tenant.
      operationId: listCompanies
      tags:
      - Companies
      parameters:
      - $ref: '#/components/parameters/top'
      - $ref: '#/components/parameters/skip'
      - $ref: '#/components/parameters/filter'
      - $ref: '#/components/parameters/select'
      responses:
        '200':
          description: A list of companies.
          content:
            application/json:
              schema:
                type: object
                properties:
                  value:
                    type: array
                    items:
                      $ref: '#/components/schemas/Company'
        '401':
          $ref: '#/components/responses/Unauthorized'
components:
  responses:
    Unauthorized:
      description: Authentication required or token is invalid.
  parameters:
    filter:
      name: $filter
      in: query
      description: OData filter expression.
      schema:
        type: string
    select:
      name: $select
      in: query
      description: Comma-separated list of properties to include.
      schema:
        type: string
    skip:
      name: $skip
      in: query
      description: Number of records to skip.
      schema:
        type: integer
    top:
      name: $top
      in: query
      description: Maximum number of records to return.
      schema:
        type: integer
  schemas:
    Company:
      type: object
      properties:
        id:
          type: string
          format: uuid
          readOnly: true
        systemVersion:
          type: string
          readOnly: true
        name:
          type: string
        displayName:
          type: string
        businessProfileId:
          type: string
  securitySchemes:
    oauth2:
      type: oauth2
      description: Microsoft Entra ID (Azure AD) OAuth 2.0 authentication.
      flows:
        authorizationCode:
          authorizationUrl: https://login.microsoftonline.com/common/oauth2/v2.0/authorize
          tokenUrl: https://login.microsoftonline.com/common/oauth2/v2.0/token
          scopes:
            https://api.businesscentral.dynamics.com/.default: Access Business Central API