openapi: 3.1.0
info:
  title: commercetools Change History Carts Project API
  description: The commercetools Change History API provides a queryable audit log of all changes made to resources within a Composable Commerce project. It records mutations applied to resources such as products, orders, customers, discounts, and carts, along with metadata about who made the change and when. The API is hosted on separate regional endpoints from the main HTTP API and supports filtering by resource type, date range, user, and API client. It is useful for compliance workflows, debugging unexpected state changes, and building audit trails for regulated industries.
  version: '1.0'
  contact:
    name: commercetools Support
    url: https://support.commercetools.com
  termsOfService: https://commercetools.com/terms-conditions
servers:
- url: https://history.{region}.commercetools.com
  description: Production Change History Server
  variables:
    region:
      default: us-central1.gcp
      enum:
      - us-central1.gcp
      - us-east-2.aws
      - europe-west1.gcp
      - eu-central-1.aws
      - australia-southeast1.gcp
      description: The deployment region.
security:
- bearerAuth: []
tags:
- name: Project
  description: Read and configure project-level settings including currencies, languages, and messages.
paths:
  /{projectKey}:
    get:
      operationId: getProject
      summary: Get project settings
      description: Retrieves the project settings including languages, currencies, countries, messaging configuration, and search indexing settings. The project key in the path must match the authenticated API client's project.
      tags:
      - Project
      parameters:
      - $ref: '#/components/parameters/projectKey'
      responses:
        '200':
          description: The project settings.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Project'
        '401':
          $ref: '#/components/responses/Unauthorized'
components:
  schemas:
    Project:
      type: object
      description: The project resource containing global configuration for languages, currencies, countries, and features.
      required:
      - key
      - name
      - currencies
      - languages
      - countries
      properties:
        key:
          type: string
          description: The unique project key.
        name:
          type: string
          description: Human-readable name of the project.
        currencies:
          type: array
          items:
            type: string
            pattern: ^[A-Z]{3}$
          description: ISO 4217 currency codes enabled for the project.
        languages:
          type: array
          items:
            type: string
          description: IETF language tags enabled for the project.
        countries:
          type: array
          items:
            type: string
          description: ISO 3166-1 alpha-2 country codes enabled for the project.
        createdAt:
          type: string
          format: date-time
          description: ISO 8601 timestamp when the project was created.
  parameters:
    projectKey:
      name: projectKey
      in: path
      required: true
      schema:
        type: string
      description: The unique key identifying the commercetools project.
  responses:
    Unauthorized:
      description: The request lacked valid authentication credentials.
      content:
        application/json:
          schema:
            type: object
            properties:
              statusCode:
                type: integer
              message:
                type: string
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      description: OAuth 2.0 Bearer token obtained from the commercetools authentication service using client credentials flow. Requires the view_audit_log scope.
externalDocs:
  description: commercetools Change History API Documentation
  url: https://docs.commercetools.com/api/history/overview