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

# List



## OpenAPI

````yaml https://raw.githubusercontent.com/ngrok/ngrok-openapi/refs/heads/main/ngrok.yaml get /backends/http_response
openapi: 3.0.0
info:
  title: ngrok OpenAPI
  version: 1.0.0
servers:
  - url: https://api.ngrok.com
security:
  - authentication: []
paths:
  /backends/http_response:
    get:
      tags:
        - HTTPResponseBackends
      summary: List
      operationId: HttpResponseBackendsList
      parameters:
        - $ref: '#/components/parameters/ngrokVersion'
        - name: before_id
          in: query
          required: false
          schema:
            type: string
        - name: limit
          in: query
          required: false
          schema:
            type: string
      responses:
        '200':
          description: n/a
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HTTPResponseBackendList'
components:
  parameters:
    ngrokVersion:
      name: ngrok-version
      in: header
      required: true
      schema:
        type: integer
        default: 2
  schemas:
    HTTPResponseBackendList:
      type: object
      properties:
        backends:
          description: n/a
          type: array
          items:
            $ref: '#/components/schemas/HTTPResponseBackend'
        uri:
          description: n/a
          type: string
        next_page_uri:
          description: n/a
          type: string
    HTTPResponseBackend:
      type: object
      properties:
        id:
          description: n/a
          type: string
        uri:
          description: |
            URI of the HTTPResponseBackend API resource
          type: string
        created_at:
          description: |
            timestamp when the backend was created, RFC 3339 format
          type: string
        description:
          description: |
            human-readable description of this backend. Optional
          type: string
        metadata:
          description: >
            arbitrary user-defined machine-readable data of this backend.
            Optional
          type: string
        body:
          description: |
            body to return as fixed content
          type: string
        headers:
          description: |
            headers to return
          type: object
        status_code:
          description: |
            status code to return
          type: integer
  securitySchemes:
    authentication:
      type: http
      scheme: bearer

````