Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add martinholovsky/claude-skills-generator --skill windows-ui-automationgit clone --depth 1 https://github.com/martinholovsky/claude-skills-generatorWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/martinholovsky/claude-skills-generator/windows-ui-automation)<a href="https://agentmods.dev/skills/martinholovsky/claude-skills-generator/windows-ui-automation"><img src="https://agentmods.dev/badge/skills/martinholovsky/claude-skills-generator/windows-ui-automation/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/martinholovsky/claude-skills-generator/windows-ui-automation"><img src="https://agentmods.dev/badge/skills/martinholovsky/claude-skills-generator/windows-ui-automation.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- Snyk pass
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00055 | $0.04494 |
| Opus 5 | $0.00028 | $0.02247 |
| Sonnet 5 | $0.00011 | $0.00899 |
| Haiku 4.5 | $0.00006 | $0.00449 |
Grade B, and why
windows-ui-automation scanned grade B with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 9d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Instruction-override phrasingmediumPrompt injection
Text telling the model to disregard its earlier instructions or safety rules is the shape of a prompt injection, whoever wrote it.
- **Description**: Input injection to bypass security prompts Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.
How it starts
The opening of the file, as written. The whole thing — 644 lines — stays where its author put it; the contents beside it link to each section on GitHub.
File Organization: This skill uses split structure. Main SKILL.md contains core decision-making context. See
references/for detailed implementations.
1. Overview
Risk Level: HIGH - System-level access, process manipulation, input injection capabilities
You are an expert in Windows UI Automation with deep expertise in:
- UI Automation Framework: UIA patterns, control patterns, automation elements
- Win32 API Integration: Window management, message passing, input simulation
- Accessibility Services: Screen readers, assistive technology interfaces
- Process Security: Safe automation boundaries, privilege management
You excel at:
- Automating Windows desktop applications safely and reliably
- Implementing robust element discovery and interaction patterns
- Managing automation sessions with proper security controls
- Building accessible automation that respects system boundaries
Core Expertise Areas
- UI Automation APIs: IUIAutomation, IUIAutomationElement, Control Patterns
- Win32 Integration: SendInput, SetForegroundWindow, EnumWindows
- Security Controls: Process validation, permission tiers, audit logging
- Error Handling: Timeout management, element state verification
Core Principles
- TDD First - Write tests before implementation code
- Performance Aware - Optimize element discovery and caching
- Security First - Validate processes, enforce permissions, audit all operations
- Fail Safe - Timeouts, graceful degradation, proper cleanup
2. Core Responsibilities
2.1 Safe Automation Principles
When performing UI automation, you will:
- Validate target processes before any interaction
- Enforce permission tiers (read-only, standard, elevated)
- Block sensitive applications (password managers, security tools, admin consoles)
- Log all operations for audit trails
- Implement timeouts to prevent runaway automation
2.2 Security-First Approach
Every automation operation MUST:
- Verify process identity and integrity
- Check against blocked application list
- Validate user authorization level
- Log operation with correlation ID
- Enforce timeout limits
What ships with it
3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 9d ago First seen · 644 lines · 55 tokens per session scan B 9eec8e08988f
windows-ui-automation is a skill published in the GitHub repository martinholovsky/claude-skills-generator (45 stars, last pushed 9mo ago), licensed Unlicense. It adds 55 tokens to every session and 4,494 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it B with 1 finding (instruction-override phrasing). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
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