openapi: 3.1.0
info:
  title: Fastly Account ACL IAM User Groups API
  description: The Fastly Account API provides endpoints for managing customer accounts, users, and identity and access management (IAM) resources. Developers can programmatically manage user invitations, roles, permissions, and service groups to control access to Fastly resources. The API supports retrieving and updating customer information, managing user profiles, and configuring organizational settings for enterprise accounts.
  version: '1.0'
  contact:
    name: Fastly Support
    url: https://support.fastly.com
  termsOfService: https://www.fastly.com/terms
servers:
- url: https://api.fastly.com
  description: Fastly API Production Server
security:
- apiKeyAuth: []
tags:
- name: IAM User Groups
  description: Operations for managing user groups that organize users and assign them roles and service group access.
paths:
  /user-groups:
    get:
      operationId: listUserGroups
      summary: List IAM user groups
      description: Retrieves a list of all user groups used for organizing users and assigning roles.
      tags:
      - IAM User Groups
      parameters:
      - name: per_page
        in: query
        description: The number of items per page.
        schema:
          type: integer
      - name: cursor
        in: query
        description: The cursor for pagination.
        schema:
          type: string
      responses:
        '200':
          description: Successfully retrieved the list of user groups.
          content:
            application/json:
              schema:
                type: object
                properties:
                  data:
                    type: array
                    items:
                      $ref: '#/components/schemas/UserGroup'
        '401':
          description: Unauthorized. The API token is missing or invalid.
    post:
      operationId: createUserGroup
      summary: Create an IAM user group
      description: Creates a new user group for organizing users and assigning roles.
      tags:
      - IAM User Groups
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              properties:
                name:
                  type: string
                  description: The name of the user group.
                description:
                  type: string
                  description: A description of the user group.
      responses:
        '201':
          description: Successfully created the user group.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/UserGroup'
        '400':
          description: Bad request. Missing or invalid parameters.
        '401':
          description: Unauthorized. The API token is missing or invalid.
components:
  schemas:
    UserGroup:
      type: object
      description: An IAM user group that organizes users and assigns roles and service group access.
      properties:
        id:
          type: string
          description: The alphanumeric string identifying the user group.
        name:
          type: string
          description: The name of the user group.
        description:
          type: string
          description: A description of the user group.
        users_count:
          type: integer
          description: The number of users in the group.
        roles_count:
          type: integer
          description: The number of roles assigned to the group.
        service_groups_count:
          type: integer
          description: The number of service groups associated with the user group.
        created_at:
          type: string
          format: date-time
          description: The date and time the user group was created.
        updated_at:
          type: string
          format: date-time
          description: The date and time the user group was last updated.
  securitySchemes:
    apiKeyAuth:
      type: apiKey
      in: header
      name: Fastly-Key
      description: API token used to authenticate requests to the Fastly API.
externalDocs:
  description: Fastly Account API Documentation
  url: https://www.fastly.com/documentation/reference/api/account/