openapi: 3.1.0
info:
  title: F5 Load Balancer F5 BIG-IP Application Services 3 Extension (AS3) Config Pools API
  description: The Application Services 3 Extension (AS3) provides a declarative API for managing application-specific configurations on BIG-IP systems. AS3 uses JSON declarations to describe the desired state of Layer 4-7 application services, enabling infrastructure-as-code workflows for load balancing, SSL offloading, and traffic management. Rather than issuing imperative commands, users submit a complete declaration and AS3 configures the BIG-IP to match the declared state.
  version: 3.50.0
  contact:
    name: F5 Networks Support
    email: support@f5.com
    url: https://www.f5.com/services/support
  license:
    name: Apache-2.0
    url: https://www.apache.org/licenses/LICENSE-2.0
  termsOfService: https://www.f5.com/company/policies/terms-of-use
servers:
- url: https://{bigip_host}/mgmt/shared/appsvcs
  description: BIG-IP AS3 Extension Endpoint
  variables:
    bigip_host:
      default: 192.168.1.245
      description: Hostname or IP address of the BIG-IP device
security:
- basicAuth: []
- tokenAuth: []
tags:
- name: Pools
  description: Manage pools of backend servers for load distribution and health monitoring.
  externalDocs:
    url: https://clouddocs.f5.com/api/icontrol-rest/APIRef_tm_ltm_pool.html
paths:
  /ltm/pool:
    get:
      operationId: listPools
      summary: F5 Load Balancer List all pools
      description: Retrieves a collection of all load balancing pool resources configured on the BIG-IP system. Pools contain members that receive traffic distributed by virtual servers.
      tags:
      - Pools
      parameters:
      - $ref: '#/components/parameters/SelectParam'
      - $ref: '#/components/parameters/FilterParam'
      - $ref: '#/components/parameters/TopParam'
      - $ref: '#/components/parameters/SkipParam'
      - $ref: '#/components/parameters/ExpandSubcollectionsParam'
      responses:
        '200':
          description: Successfully retrieved pool collection
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/PoolCollection'
        '401':
          $ref: '#/components/responses/Unauthorized'
    post:
      operationId: createPool
      summary: F5 Load Balancer Create a pool
      description: Creates a new load balancing pool on the BIG-IP system. A pool is a collection of backend server members to which the BIG-IP distributes client traffic.
      tags:
      - Pools
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/Pool'
      responses:
        '200':
          description: Pool created successfully
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Pool'
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '409':
          description: Pool with the specified name already exists
  /ltm/pool/{poolName}:
    parameters:
    - $ref: '#/components/parameters/PoolNameParam'
    get:
      operationId: getPool
      summary: F5 Load Balancer Get a specific pool
      description: Retrieves a single pool resource identified by name including its configuration and load balancing settings.
      tags:
      - Pools
      responses:
        '200':
          description: Successfully retrieved pool
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Pool'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
    put:
      operationId: updatePool
      summary: F5 Load Balancer Update a pool
      description: Replaces the configuration of an existing pool resource.
      tags:
      - Pools
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/Pool'
      responses:
        '200':
          description: Pool updated successfully
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Pool'
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
    delete:
      operationId: deletePool
      summary: F5 Load Balancer Delete a pool
      description: Removes a pool resource from the BIG-IP system. Any virtual servers referencing this pool should be updated before deletion.
      tags:
      - Pools
      responses:
        '200':
          description: Pool deleted successfully
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
components:
  parameters:
    SkipParam:
      name: $skip
      in: query
      required: false
      description: Number of resources to skip before returning results.
      schema:
        type: integer
        minimum: 0
    PoolNameParam:
      name: poolName
      in: path
      required: true
      description: Name of the pool resource, optionally prefixed with the partition path (e.g., ~Common~my_pool).
      schema:
        type: string
    FilterParam:
      name: $filter
      in: query
      required: false
      description: OData filter expression to restrict returned resources.
      schema:
        type: string
    SelectParam:
      name: $select
      in: query
      required: false
      description: Comma-separated list of properties to include in the response.
      schema:
        type: string
    ExpandSubcollectionsParam:
      name: expandSubcollections
      in: query
      required: false
      description: When set to true, inline sub-collections in the response.
      schema:
        type: string
        enum:
        - 'true'
        - 'false'
    TopParam:
      name: $top
      in: query
      required: false
      description: Maximum number of resources to return.
      schema:
        type: integer
        minimum: 1
  schemas:
    ErrorResponse:
      type: object
      properties:
        code:
          type: integer
          description: HTTP status code.
        message:
          type: string
          description: Human-readable error message.
        errorStack:
          type: array
          items:
            type: string
          description: Stack trace for debugging purposes.
    PoolCollection:
      type: object
      properties:
        kind:
          type: string
          const: tm:ltm:pool:poolcollectionstate
        selfLink:
          type: string
          format: uri
        items:
          type: array
          items:
            $ref: '#/components/schemas/Pool'
    Pool:
      type: object
      required:
      - name
      properties:
        kind:
          type: string
          const: tm:ltm:pool:poolstate
          readOnly: true
        name:
          type: string
          description: Name of the pool resource.
          minLength: 1
          maxLength: 255
        fullPath:
          type: string
          readOnly: true
        generation:
          type: integer
          readOnly: true
        selfLink:
          type: string
          format: uri
          readOnly: true
        description:
          type: string
          description: User-defined description of the pool.
        loadBalancingMode:
          type: string
          description: Algorithm used to distribute traffic across pool members.
          enum:
          - round-robin
          - ratio-member
          - least-connections-member
          - observed-member
          - predictive-member
          - ratio-node
          - least-connections-node
          - fastest-node
          - observed-node
          - predictive-node
          - dynamic-ratio-node
          - fastest-app-response
          - least-sessions
          - dynamic-ratio-member
          - weighted-least-connections-member
          - weighted-least-connections-node
        monitor:
          type: string
          description: Health monitor(s) applied to pool members.
        partition:
          type: string
          description: Administrative partition containing this pool.
        allowNat:
          type: string
          description: Whether the pool can load balance NAT connections.
          enum:
          - 'yes'
          - 'no'
        allowSnat:
          type: string
          description: Whether the pool can load balance SNAT connections.
          enum:
          - 'yes'
          - 'no'
        minActiveMembers:
          type: integer
          description: Minimum active members before priority-group activation.
          minimum: 0
        slowRampTime:
          type: integer
          description: Seconds to ramp up traffic to newly enabled members.
          minimum: 0
        reselectTries:
          type: integer
          description: Reselection attempts after a passive failure detection.
          minimum: 0
        serviceDownAction:
          type: string
          description: Action when all pool members are unavailable.
          enum:
          - none
          - reset
          - reselect
          - drop
  responses:
    NotFound:
      description: The requested resource was not found on the BIG-IP system.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
    BadRequest:
      description: The request was malformed or contained invalid parameters.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
    Unauthorized:
      description: Authentication credentials were missing or invalid.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
  securitySchemes:
    basicAuth:
      type: http
      scheme: basic
      description: HTTP Basic Authentication using BIG-IP admin credentials.
    tokenAuth:
      type: apiKey
      in: header
      name: X-F5-Auth-Token
      description: Token-based authentication obtained from the /mgmt/shared/authn/login endpoint.
externalDocs:
  description: F5 BIG-IP AS3 Documentation
  url: https://clouddocs.f5.com/products/extensions/f5-appsvcs-extension/latest/