> ## Documentation Index > Fetch the complete documentation index at: https://docs.dados.rio/llms.txt > Use this file to discover all available pages before exploring further. # List roles assigned to a group > List all roles assigned to a specific group. **Authorization**: Users can view roles of groups they have permission to access. Permissions are checked via Cerbos policies. **Role Information**: Returns each role's ID, name, and description. **Use Cases**: - View group permissions and capabilities - Audit group role assignments - Administrative oversight of access control - Verify role inheritance for group members **Sorting**: Roles are returned sorted by name (alphabetical order). ## OpenAPI ````yaml https://raw.githubusercontent.com/prefeitura-rio/heimdall/main/docs/api/openapi.json get /api/v1/roles/groups/{group_name}/roles openapi: 3.1.0 info: title: Heimdall Admin Service description: >- # Heimdall Admin Service API A comprehensive admin service for user and group management with authorization powered by Cerbos. ## Features - **User Management**: Automatic user creation from JWT tokens with role-based access control - **Group Management**: Create, manage, and assign users to groups with hierarchical permissions - **Role Management**: Define and assign roles to users and groups - **Mapping Management**: Configure API endpoint to action mappings for authorization - **Action Management**: Define available actions for fine-grained permission control - **Cerbos Integration**: Policy-based authorization with external Cerbos service - **Audit Logging**: Comprehensive audit trail for all administrative operations - **Redis Caching**: High-performance caching for frequently accessed data version: 1.0.0 servers: - url: https://services.pref.rio/heimdall-admin description: Production server - url: https://services.staging.app.dados.rio/heimdall-admin description: Staging server security: [] tags: - name: health description: Service health and readiness checks - name: users description: >- User management operations. Users are automatically created from JWT tokens. - name: groups description: >- Group management operations. Groups organize users and can have roles assigned. - name: memberships description: Group membership management. Assign and remove users from groups. - name: roles description: >- Role management operations. Roles define permissions that can be assigned to users or groups. - name: actions description: >- Action management operations. Actions define the granular permissions available in the system. - name: mappings description: >- API endpoint to action mapping configuration. Maps HTTP endpoints to authorization actions. paths: /api/v1/roles/groups/{group_name}/roles: get: tags: - roles summary: List roles assigned to a group description: >- List all roles assigned to a specific group. **Authorization**: Users can view roles of groups they have permission to access. Permissions are checked via Cerbos policies. **Role Information**: Returns each role's ID, name, and description. **Use Cases**: - View group permissions and capabilities - Audit group role assignments - Administrative oversight of access control - Verify role inheritance for group members **Sorting**: Roles are returned sorted by name (alphabetical order). operationId: list_group_roles_api_v1_roles_groups__group_name__roles_get parameters: - name: group_name in: path required: true schema: type: string title: Group Name responses: '200': description: List of group roles retrieved successfully content: application/json: schema: type: array items: $ref: '#/components/schemas/RoleResponse' title: >- Response List Group Roles Api V1 Roles Groups Group Name Roles Get example: - id: 1 name: data_analyst:read description: Data analysis and reporting access - id: 2 name: team_lead:manage description: Team leadership and management permissions '401': description: Unauthorized - Invalid or missing JWT token content: application/json: example: detail: Could not validate credentials '403': description: Forbidden - Insufficient permissions to view group roles content: application/json: example: detail: >- Permission denied to view roles of group 'engineering_team:backend' '404': description: Group not found content: application/json: example: detail: Group 'unknown-group' not found '422': description: Validation Error content: application/json: schema: $ref: '#/components/schemas/HTTPValidationError' '500': description: Internal server error content: application/json: example: detail: 'Failed to retrieve group roles: Database connection error' security: - HTTPBearer: [] components: schemas: RoleResponse: properties: id: type: integer title: Id description: Unique identifier for the role example: 1 name: type: string title: Name description: Role name example: data_analyst:read description: type: string title: Description description: Role description example: Data analysts with read access to analytics dashboards created_by: anyOf: - type: string - type: 'null' title: Created By description: CPF of the user who created this role (null for system roles) example: '12345678901' created_at: anyOf: - type: string - type: 'null' title: Created At description: ISO timestamp when the role was created (null for system roles) example: '2024-01-15T10:30:00Z' type: object required: - id - name - description title: RoleResponse description: Response model for role information. example: created_at: '2024-01-15T10:30:00Z' created_by: '12345678901' description: Data analysts with read access to analytics dashboards id: 1 name: data_analyst:read HTTPValidationError: properties: detail: items: $ref: '#/components/schemas/ValidationError' type: array title: Detail type: object title: HTTPValidationError ValidationError: properties: loc: items: anyOf: - type: string - type: integer type: array title: Location msg: type: string title: Message type: type: string title: Error Type type: object required: - loc - msg - type title: ValidationError securitySchemes: HTTPBearer: type: http scheme: bearer ````