> ## Documentation Index
> Fetch the complete documentation index at: https://docs.cloudblast.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Get Security Group

> Returns a security group with its firewall rules and attached servers.



## OpenAPI

````yaml GET /security-groups/{id}
openapi: 3.0.3
info:
  title: CloudBlast API
  description: >-
    The CloudBlast V2 API provides a modern RESTful interface for managing your
    cloud infrastructure programmatically. All responses follow a consistent `{
    "data": ... }` or `{ "error": ... }` format.
  version: 2.0.0
servers:
  - url: https://console.cloudblast.io/api/v2
    description: Production
security:
  - bearerAuth: []
paths:
  /security-groups/{id}:
    get:
      tags:
        - Security Groups
      summary: Get security group details
      description: Returns a security group with its firewall rules and attached servers.
      operationId: getSecurityGroup
      parameters:
        - name: id
          in: path
          required: true
          schema:
            type: integer
          description: Security group ID
      responses:
        '200':
          description: Security group details
          content:
            application/json:
              schema:
                type: object
                properties:
                  data:
                    $ref: '#/components/schemas/SecurityGroupDetail'
        '401':
          $ref: '#/components/responses/Unauthenticated'
        '404':
          $ref: '#/components/responses/NotFound'
components:
  schemas:
    SecurityGroupDetail:
      allOf:
        - $ref: '#/components/schemas/SecurityGroup'
        - type: object
          properties:
            rules:
              type: array
              items:
                $ref: '#/components/schemas/FirewallRule'
            servers:
              type: array
              items:
                type: object
                properties:
                  uuid:
                    type: string
                  uuid_short:
                    type: string
                  name:
                    type: string
    SecurityGroup:
      type: object
      properties:
        id:
          type: integer
          example: 1
        name:
          type: string
          example: web-servers
        description:
          type: string
          nullable: true
          example: Allow HTTP/HTTPS traffic
        vm_count:
          type: integer
          description: Number of servers attached
          example: 3
        rules_count:
          type: integer
          description: Number of firewall rules
          example: 5
        created_at:
          type: string
          format: date-time
          example: '2026-01-10T14:00:00+00:00'
    FirewallRule:
      type: object
      properties:
        id:
          type: integer
          example: 1
        type:
          type: string
          enum:
            - inbound
            - outbound
          example: inbound
        action:
          type: string
          enum:
            - ACCEPT
            - REJECT
            - DROP
          example: ACCEPT
        protocol:
          type: string
          example: tcp
        source:
          type: string
          nullable: true
          example: null
        destination:
          type: string
          nullable: true
          example: null
        source_port:
          type: string
          nullable: true
          example: null
        destination_port:
          type: string
          nullable: true
          example: 80,443
        comment:
          type: string
          nullable: true
          example: Allow HTTP/HTTPS
        priority:
          type: integer
          example: 0
    Error:
      type: object
      properties:
        error:
          type: object
          properties:
            code:
              type: string
              description: Machine-readable error code
            message:
              type: string
              description: Human-readable error message
          required:
            - code
            - message
  responses:
    Unauthenticated:
      description: Authentication failed
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
          example:
            error:
              code: UNAUTHENTICATED
              message: >-
                Missing or invalid Authorization header. Use: Authorization:
                Bearer <token>
    NotFound:
      description: Resource not found
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
          example:
            error:
              code: NOT_FOUND
              message: Server not found.
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      description: >-
        API token from your CloudBlast account settings. Pass as `Authorization:
        Bearer <token>`.

````