cPanel Cache Buster API

openapi: 3.2.0
info:
  contact:
    email: cs@cpanel.net
    name: WebPros International, LLC
    url: https://cpanel.net/support/
  description: UAPI accesses the cPanel interface's features. Use this API to access and modify cPanel account data and settings.
  license:
    name: cPanel License
    url: https://cpanel.net/legal-notices/
  termsOfService: https://cpanel.net/legal-notices/
  title: cPanel U Cache Buster API
  version: 11.137.9999.106
  x-api-evangelist-provenance: 'Harvested verbatim from cPanel''s developer portal on 2026-09-05 via the MCP tool get-full-api-description at https://api.docs.cpanel.net/mcp. ONE mechanical change was made before storage: example values containing PEM private-key or certificate blocks, and AWS-access-key-shaped example strings, were replaced with REDACTED_* placeholders so the file can be stored in a public git repository without tripping secret scanning. No path, operation, parameter, schema or description was altered, added or removed.'
servers:
- description: A server running cPanel.
  url: https://{host}:{port}/execute
  variables:
    host:
      default: cpanel-server.tld
      description: The hostname of a server running cPanel.
    port:
      default: '2083'
      description: The cPanel port.
security:
- BasicAuth: []
tags:
- description: The CacheBuster module for UAPI.
  name: CacheBuster
paths:
  /CacheBuster/read:
    get:
      x-readonly: true
      description: 'This function returns the current `CacheBuster` id. The system uses this ID to force the browser to fetch a new resource when that resource already exists in the web browser cache. This is useful when an application has updated the resource on the server. You should append this ID to the end of the url in the query-string. For example, if you are accessing a url like:


        `https://example.com/styled/basic/sprites/icon_spritemap.css`


        To force the browser to fetch the updated version, you would append the following:


        `https://example.com/styled/basic/sprites/icon_spritemap.css?`


        **Note**


        The application that updates the resource at this url on the server **must** call the `CacheBuster::update` function when it updates the resource to signify that update.'
      operationId: CacheBuster-read
      parameters: []
      responses:
        '200':
          content:
            application/json:
              schema:
                properties:
                  apiversion:
                    description: The version of the API.
                    example: 3
                    type: integer
                  func:
                    description: The name of the method called.
                    example: read
                    type: string
                  module:
                    description: The name of the module called.
                    example: CacheBuster
                    type: string
                  result:
                    properties:
                      data:
                        properties:
                          cache_id:
                            description: An eight-digit random integer that the system uses to work around a browser's caching mechanism.
                            example: 11381138
                            maximum: 99999999
                            minimum: 10000000
                            type: integer
                        type: object
                      errors:
                        description: List of errors if the API failed.
                        example: null
                        items:
                          type: string
                        type:
                        - array
                        - 'null'
                      messages:
                        description: List of messages generated by the API.
                        example: null
                        items:
                          type: string
                        type:
                        - array
                        - 'null'
                      metadata:
                        properties: {}
                      status:
                        description: '* `1` — Success.

                          * `0` — Failed. Check the `errors` field for more details.'
                        enum:
                        - 0
                        - 1
                        example: 1
                        type: integer
                      warnings:
                        description: List of warnings generated by the API. Warnings describe non-critical failures or other problematic conditions noted while running a API.
                        example: null
                        items:
                          type: string
                        type:
                        - array
                        - 'null'
                    type: object
                type: object
          description: HTTP Request was successful.
      summary: Return web browser cached file override ID
      tags:
      - CacheBuster
      x-codeSamples:
      - label: CLI
        lang: Shell
        source: "uapi --output=jsonpretty \\\n  --user=username \\\n  CacheBuster \\\n  read\n"
      - label: URL
        lang: HTTP
        source: https://hostname.example.com:2083/cpsess##########/execute/CacheBuster/read
      - label: LiveAPI Perl
        lang: Perl
        source: "#--------------------------------------------------------------------------------------\n# Instructions:\n#--------------------------------------------------------------------------------------\n# <theme-name> is the theme assigned to cPanel account.\n# 1) cd /usr/local/cpanel/base/frontend/<theme-name>\n# 2) mkdir api_examples\n# 3) cd api_examples\n# 4) create a file CacheBuster_read.live.pl and put this code into that file.\n# 5) In your browser login to a cPanel account.\n# 6) Manually change the url from: .../frontend/<theme-name>/\n#    to .../frontend/<theme-name>/api_examples/CacheBuster_read.live.pl\n#--------------------------------------------------------------------------------------\n\nuse strict;\n\nuse Cpanel::LiveAPI ();\n\nmy $cpanel = Cpanel::LiveAPI->new(); # Connect to cPanel - only do this once.\n\n# Print the header\nprint \"Content-type: text/plain\\r\\n\\r\\n\";\n\n# Call the API\nmy $response = $cpanel->uapi(\n    q/CacheBuster/,\n    q/read/\n);\n\n# Handle the response\nif ($response->{cpanelresult}{result}{status}) {\n    my $data = $response->{cpanelresult}{result}{data};\n    # Do something with the $data\n    # So you can see the data shape we print it here.\n    print to_json($data);\n}\nelse {\n    # Report errors:\n    print to_json($response->{cpanelresult}{result}{errors});\n}\n\n# Disconnect from cPanel - only do this once.\n$cpanel->end();\n\n#--------------------------------------------------------------------------------------\n# Helper function to convert a perl object to html printable json\n#--------------------------------------------------------------------------------------\nsub to_json {\n    require JSON;\n    my $str = JSON->new->pretty->encode($_[0]);\n    return $str;\n}\n"
      - label: LiveAPI PHP
        lang: PHP
        source: "<?php\n//--------------------------------------------------------------------------------------\n// Instructions:\n//--------------------------------------------------------------------------------------\n// <theme-name> is the theme assigned to cPanel account.\n// 1) cd /usr/local/cpanel/base/frontend/<theme-name>\n// 2) mkdir api_examples\n// 3) cd api_examples\n// 4) create a file CacheBuster_read.live.php and put this code into that file.\n// 5) In your browser login to a cPanel account.\n// 6) Manually change the url from: .../frontend/<theme-name>/\n//    to .../frontend/<theme-name>/api_examples/CacheBuster_read.live.php\n//--------------------------------------------------------------------------------------\n\n// Instantiate the CPANEL object.\nrequire_once \"/usr/local/cpanel/php/cpanel.php\";\n\n// Print the header\nheader('Content-Type: text/plain');\n\n// Connect to cPanel - only do this once.\n$cpanel = new CPANEL();\n\n// Call the API\n$response = $cpanel->uapi(\n    'CacheBuster',\n    'read'\n);\n\n// Handle the response\nif ($response['cpanelresult']['result']['status']) {\n    $data = $response['cpanelresult']['result']['data'];\n    // Do something with the $data\n    // So you can see the data shape we print it here.\n    print to_json($data);\n}\nelse {\n    // Report errors:\n    print to_json($response['cpanelresult']['result']['errors']);\n}\n\n// Disconnect from cPanel - only do this once.\n$cpanel->end();\n\n//--------------------------------------------------------------------------------------\n// Helper function to convert a PHP value to html printable json\n//--------------------------------------------------------------------------------------\nfunction to_json($data) {\n    return json_encode($data, JSON_PRETTY_PRINT);\n}"
      x-cpanel-api-version: UAPI
      x-cpanel-available-version: cPanel 11.46
  /CacheBuster/update:
    get:
      x-readonly: false
      x-rollback: none
      description: This function generates a random integer (the CacheBuster ID). Use this ID to work with and around a browser's caching mechanism.
      operationId: CacheBuster-update
      parameters: []
      responses:
        '200':
          content:
            application/json:
              schema:
                properties:
                  apiversion:
                    description: The version of the API.
                    example: 3
                    type: integer
                  func:
                    description: The name of the method called.
                    example: update
                    type: string
                  module:
                    description: The name of the module called.
                    example: CacheBuster
                    type: string
                  result:
                    properties:
                      data:
                        properties:
                          cache_id:
                            description: random integer that the system uses to work with and around a browser's caching mechanism. An eight-digit integer.
                            example: 11381138
                            type: integer
                        type: object
                      errors:
                        description: List of errors if the API failed.
                        example: null
                        items:
                          type: string
                        type:
                        - array
                        - 'null'
                      messages:
                        description: List of messages generated by the API.
                        example: null
                        items:
                          type: string
                        type:
                        - array
                        - 'null'
                      metadata:
                        properties: {}
                      status:
                        description: '- 1 - Success

                          - 0 - Failed: Check the errors field for more details.'
                        enum:
                        - 0
                        - 1
                        example: 1
                        type: integer
                      warnings:
                        description: List of warnings generated by the API. Warnings describe non-critical failures or other problematic conditions noted while running a API.
                        example: null
                        items:
                          type: string
                        type:
                        - array
                        - 'null'
                    type: object
                type: object
          description: HTTP Request was successful.
      summary: Create web browser cached file override ID
      tags:
      - CacheBuster
      x-codeSamples:
      - label: CLI
        lang: Shell
        source: "uapi --output=jsonpretty \\\n  --user=username \\\n  CacheBuster \\\n  update\n"
      - label: URL
        lang: HTTP
        source: https://hostname.example.com:2083/cpsess##########/execute/CacheBuster/update
      - label: LiveAPI Perl
        lang: Perl
        source: "#--------------------------------------------------------------------------------------\n# Instructions:\n#--------------------------------------------------------------------------------------\n# <theme-name> is the theme assigned to cPanel account.\n# 1) cd /usr/local/cpanel/base/frontend/<theme-name>\n# 2) mkdir api_examples\n# 3) cd api_examples\n# 4) create a file CacheBuster_update.live.pl and put this code into that file.\n# 5) In your browser login to a cPanel account.\n# 6) Manually change the url from: .../frontend/<theme-name>/\n#    to .../frontend/<theme-name>/api_examples/CacheBuster_update.live.pl\n#--------------------------------------------------------------------------------------\n\nuse strict;\n\nuse Cpanel::LiveAPI ();\n\nmy $cpanel = Cpanel::LiveAPI->new(); # Connect to cPanel - only do this once.\n\n# Print the header\nprint \"Content-type: text/plain\\r\\n\\r\\n\";\n\n# Call the API\nmy $response = $cpanel->uapi(\n    q/CacheBuster/,\n    q/update/\n);\n\n# Handle the response\nif ($response->{cpanelresult}{result}{status}) {\n    my $data = $response->{cpanelresult}{result}{data};\n    # Do something with the $data\n    # So you can see the data shape we print it here.\n    print to_json($data);\n}\nelse {\n    # Report errors:\n    print to_json($response->{cpanelresult}{result}{errors});\n}\n\n# Disconnect from cPanel - only do this once.\n$cpanel->end();\n\n#--------------------------------------------------------------------------------------\n# Helper function to convert a perl object to html printable json\n#--------------------------------------------------------------------------------------\nsub to_json {\n    require JSON;\n    my $str = JSON->new->pretty->encode($_[0]);\n    return $str;\n}\n"
      - label: LiveAPI PHP
        lang: PHP
        source: "<?php\n//--------------------------------------------------------------------------------------\n// Instructions:\n//--------------------------------------------------------------------------------------\n// <theme-name> is the theme assigned to cPanel account.\n// 1) cd /usr/local/cpanel/base/frontend/<theme-name>\n// 2) mkdir api_examples\n// 3) cd api_examples\n// 4) create a file CacheBuster_update.live.php and put this code into that file.\n// 5) In your browser login to a cPanel account.\n// 6) Manually change the url from: .../frontend/<theme-name>/\n//    to .../frontend/<theme-name>/api_examples/CacheBuster_update.live.php\n//--------------------------------------------------------------------------------------\n\n// Instantiate the CPANEL object.\nrequire_once \"/usr/local/cpanel/php/cpanel.php\";\n\n// Print the header\nheader('Content-Type: text/plain');\n\n// Connect to cPanel - only do this once.\n$cpanel = new CPANEL();\n\n// Call the API\n$response = $cpanel->uapi(\n    'CacheBuster',\n    'update'\n);\n\n// Handle the response\nif ($response['cpanelresult']['result']['status']) {\n    $data = $response['cpanelresult']['result']['data'];\n    // Do something with the $data\n    // So you can see the data shape we print it here.\n    print to_json($data);\n}\nelse {\n    // Report errors:\n    print to_json($response['cpanelresult']['result']['errors']);\n}\n\n// Disconnect from cPanel - only do this once.\n$cpanel->end();\n\n//--------------------------------------------------------------------------------------\n// Helper function to convert a PHP value to html printable json\n//--------------------------------------------------------------------------------------\nfunction to_json($data) {\n    return json_encode($data, JSON_PRETTY_PRINT);\n}"
      x-cpanel-api-version: UAPI
      x-cpanel-available-version: cPanel 11.46
components:
  securitySchemes:
    BasicAuth:
      scheme: basic
      type: http
externalDocs:
  url: https://cpanel.net/developers/
x-tagGroups:
- name: API Development Tools
  tags:
  - API Token Management
  - Batch
  - SSE Task Management
  - URL Parsing
- name: Authentication
  tags:
  - External Authentication
  - Two-Factor Settings
- name: Backup Information
  tags:
  - BackupInfo
  - BackupInfo Status
- name: Block Ip Addresses
  tags:
  - Block IP
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  tags:
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- name: Contact Information
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  - Contact Information
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  tags:
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- name: cPanel Account Backups
  tags:
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- name: cPanel Plugin Framework
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  tags:
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  - Branding Files
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- name: Directory Management
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  - Directory Indexes
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  tags:
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- name: Domain
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  - Domain
- name: Domain Management
  tags:
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  tags:
  - Email Accounts
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