Requirements
- Target platform
- OpenClaw
- Install method
- Manual import
- Extraction
- Extract archive
- Prerequisites
- OpenClaw
- Primary doc
- SKILL.md
Tencent SkillHub ยท Developer Tools
Jsrt Claw
Automate Windows system tasks by generating and running a single JavaScript file using Microsoft JsRT with COM objects and fallback support.
skill openclawclawhub Free
Automate Windows system tasks by generating and running a single JavaScript file using Microsoft JsRT with COM objects and fallback support.
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Install for OpenClaw
Quick setup
- Download the package from Yavira.
- Extract the archive and review SKILL.md first.
- Import or place the package into your OpenClaw setup.
Package facts
- Download mode
- Yavira redirect
- Package format
- ZIP package
- Source platform
- Tencent SkillHub
- What's included
- SKILL.md
Validation
- Use the Yavira download entry.
- Review SKILL.md after the package is downloaded.
- Confirm the extracted package contains the expected setup assets.
Install with your agent
Agent handoff
Hand the extracted package to your coding agent with a concrete install brief instead of figuring it out manually.
- Download the package from Yavira.
- Extract it into a folder your agent can access.
- Paste one of the prompts below and point your agent at the extracted folder.
New install
I downloaded a skill package from Yavira. Read SKILL.md from the extracted folder and install it by following the included instructions. Tell me what you changed and call out any manual steps you could not complete.
Upgrade existing
I downloaded an updated skill package from Yavira. Read SKILL.md from the extracted folder, compare it with my current installation, and upgrade it while preserving any custom configuration unless the package docs explicitly say otherwise. Summarize what changed and any follow-up checks I should run.
Trust & source
Release facts
- Source
- Tencent SkillHub
- Verification
- Indexed source record
- Version
- 0.1.0
Provenance
- Publisher
- gnh1201
- Source page
- View original listing
- Canonical URL
- Open canonical page
Documentation
Overview
JSRT enables control of a Windows system using the built-in Microsoft JsRT (JavaScript Runtime). Depending on the execution environment, Microsoft JsRT may be referred to as: WSH Windows Scripting Host cscript jscript.dll On classic Windows systems, the JScript engine is implemented in jscript.dll (JScript 5.x). When running via cscript or wscript, this engine is typically used unless hosted by another environment. This skill generates and executes a single .js file that interacts with Windows using COM objects and built-in scripting capabilities.
Execution Flow
Create a single JavaScript file using all references described in this document. Perform Windows operations using COM objects. Execute the script: cscript YOUR_JS_FILE.js
1. File System Access
COM objects: Scripting.FileSystemObject ADODB.Stream Typical usage: Reading and writing files Creating and deleting directories Handling text or binary streams
2. System & Runtime Information
COM objects and functions: WScript.Shell WbemScripting.SWbemLocator GetObject Example: GetObject("winmgmts:{impersonationLevel=impersonate}!\\\\" + this.computer + "\\" + this.namespace); Use cases: Executing Windows shell commands Querying WMI Retrieving system configuration Accessing environment variables
3. HTTP Communication
Possible COM objects (availability depends on installed MSXML/WinHTTP components): Microsoft.XMLHTTP WinHttp.WinHttpRequest.5.1 Msxml3.XMLHTTP Msxml2.XMLHTTP Msxml2.XMLHTTP.7.0 Msxml2.XMLHTTP.6.0 Msxml2.XMLHTTP.5.0 Msxml2.XMLHTTP.4.0 Msxml2.XMLHTTP.3.0 Msxml2.XMLHTTP.2.6 Msxml2.ServerXMLHTTP Msxml2.ServerXMLHTTP.6.0 Msxml2.ServerXMLHTTP.5.0 Msxml2.ServerXMLHTTP.4.0 Msxml2.ServerXMLHTTP.3.0 Fallback loading is strongly recommended.
4. Microsoft Office Automation (If Installed)
Excel.Application PowerPoint.Application Word.Application Outlook.Application Other Office-related COM objects
Required COM Object Loader (With Fallback Support)
All COM objects must be instantiated using the following CreateObject function. It supports: Single ProgID Multiple ProgIDs (fallback chain) Automatic retry until a working object is found if (typeof CreateObject === "undefined") { var CreateObject = function(progId, serverName, callback) { var progIds = (progId instanceof Array ? progId : [progId]); for (var i = 0; i < progIds.length; i++) { try { var obj = CreateObject.make(progIds[i], serverName); if (typeof callback === "function") { callback(obj, progIds[i]); } return obj; } catch (e) { // Try next ProgID } } throw new Error("Unable to create COM object from provided ProgIDs."); }; CreateObject.make = function(p, s) { if (typeof WScript !== "undefined") { if ("CreateObject" in WScript) { return WScript.CreateObject(p, s); } else { throw new Error("Built-in loader not available."); } } else if (typeof ActiveXObject !== "undefined") { return new ActiveXObject(p); } else { throw new Error("Could not find a loader"); } }; }
Fallback Example (XMLHTTP)
var xhr = CreateObject([ "Msxml2.XMLHTTP.6.0", "Msxml2.XMLHTTP.3.0", "Msxml2.XMLHTTP", "Microsoft.XMLHTTP", "WinHttp.WinHttpRequest.5.1" ]); The loader attempts each ProgID in order until one succeeds.
JavaScript Runtime Version Detection
Use the following function to determine the runtime: function getProcessVersion() { var getIEVersion = function() { var rv = -1; if (navigator.appName == 'Microsoft Internet Explorer') { var ua = navigator.userAgent; var re = new RegExp("MSIE ([0-9]{1,}[\\.0-9]{0,})"); if (re.exec(ua) != null) rv = parseFloat(RegExp.$1); } return rv; }; if (typeof WScript !== "undefined") { return "Microsoft JScript " + WScript.Version; } else if (typeof navigator !== "undefined") { return (function(rv) { return "MSIE" + (rv < 0 ? '' : (' ' + rv)); })(getIEVersion()); } }
Polyfill Support
Because jscript.dll (JScript 5.x) does not support modern ECMAScript features, polyfills may be required.
WSH JScript Compatibility
JScript VersionIntroduced with IEExample User-Agent5.6.xIE 6.0Mozilla/5.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)5.7.xIE 7.0Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0)5.8.xIE 8.0Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0)
Polyfill Discovery
Available polyfills can be checked at: https://cdnjs.cloudflare.com/polyfill/
features Parameter Format
The features parameter must be a comma-separated list of feature keywords: features=feature1,feature2,feature3 In URL query strings, commas must be URL-encoded: features=feature1%2Cfeature2%2Cfeature3 Example: Conceptual: features=default,es2015 URL-encoded: features=default%2Ces2015
Request Example
GET https://cdnjs.cloudflare.com/polyfill/v3/polyfill.min.js?version=4.8.0&features=default%2Ces2015 User-Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0) The User-Agent must match the detected JScript compatibility level.
Compatibility Strategy
Detect runtime using getProcessVersion() Instantiate COM objects using fallback arrays Identify unsupported JavaScript features Request polyfills using comma-separated features Inject polyfills before executing dependent logic Execute Windows automation logic safely under jscript.dll
Real-World Example
A real open-source project that applies this environment in practice is WelsonJS. WelsonJS: Runs on Windows using the built-in JScript runtime (jscript.dll) Uses COM objects extensively Implements fallback loading patterns Uses core-js (formerly known as Babel polyfills) to bridge modern JavaScript features into legacy JScript environments If you need concrete usage examples, implementation patterns, or real source code references, use a search function to look up: WelsonJS project information WelsonJS source code WelsonJS core-js integration Reviewing the WelsonJS project will provide practical references that can help when implementing JSRT-based automation code.
Summary
JSRT provides: Direct Windows automation COM-based system control WMI querying HTTP communication Office automation Multi-ProgID fallback support Polyfill-based compatibility for jscript.dll It is optimized for legacy Windows scripting environments while maintaining cross-version compatibility through structured fallback and polyfill strategies.
Category context
Code helpers, APIs, CLIs, browser automation, testing, and developer operations.
Source: Tencent SkillHub
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Package contents
Included in package
1 Docs
- SKILL.md