windows-automation SKILL.md skillA
windows-automation from vellum-ai/vellum-assistant is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add vellum-ai/vellum-assistant/windows-automation@git:20260827.041377bPins git:20260827.041377b in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- vellum-ai/vellum-assistant
- Path
skills/windows-automation/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260827.041377b, committed Aug 27, 2026
- Size
- 6,129 bytes
- Repository stars
- 1,483
- License
- MIT
Automate native Windows apps and system interactions with PowerShell, documented COM APIs, and Microsoft UI Automation through the Windows host executor. Use for launching or inspecting desktop apps, opening Windows Settings, controlling scriptable Microsoft Office apps, and interacting with native UI when no direct CLI or API is available.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
Use `host_bash` for every command in this skill. On Windows, `host_bash` runs Windows PowerShell with no profile and no interactive prompt. Use PowerShell syntax and Windows paths. Prefer automation methods in this order: 1. A documented CLI or URI scheme 2. A documented PowerShell module or COM API 3. Microsoft UI Automation 4. Keyboard input only when the target and focus are verified Avoid screen coordinates and blind keystrokes. They are fragile and can affect the wrong app. Use computer control only when PowerShell and UI Automation cannot complete the task or the user explicitly requests it. ## Discover and launch apps ```powershell # Find Start menu apps Get-StartApps | Where-Object Name -Like "*Calculator*" # Inspect running desktop apps Get-Process | Where-Object MainWindowTitle | Select-Object Id, ProcessName, MainWindowTitle # Launch an app or a Windows Settings page Start-Process calc.exe Start-Process "ms-settings:privacy-microphone" # Open a folder in File Explorer Start-Process explorer.exe -ArgumentList "C:\Users\Public\Documents" ``` Prefer a stable executable, AppUserModelId, URI scheme, process ID, or automation ID over a localized window title. …
Read the whole file at its exact version.
How to install
mdr add vellum-ai/vellum-assistant/windows-automation@sha256:781b286c71654004The line at the top of this page pins the label git:20260827.041377b, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_tq65dzytuacipezf)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Aug 27, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (6129 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
vellum-ai/vellum-assistant · 1,483 stars · license MIT · pushed 2026-11-08 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_tq65dzytuacipezf GET https://markdownregistry.com/api/v1/resolve?ref=vellum-ai/vellum-assistant/windows-automation GET https://markdownregistry.com/api/v1/blob/781b286c71654004b1fbcbbe037bdc19279df3247f07ebac82b9fe7d988afbc6
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.
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