windows-hardening is a skill in BagelHole/DevOps-Security-Agent-Skills, last changed 24 Mar 2026. It can touch credentials, turn off system protections, run shell commands and name web addresses — read the findings before installing.

From the author
Harden Windows servers per security baselines and CIS benchmarks. Configure Group Policy, Windows Defender, and security features. Use when securing Windows Server environments.

At a glance

What it can touch

How much a skill can do, not whether it is risky.

Pattern check

Nothing flagged

That isn't proof the skill is harmless.

Commit 0365f57 · 29 Oct 2026

How the check works

Pattern check: nothing flagged

That isn't proof the skill is harmless.

Install

Each tab says whether it installs commit 0365f57, the one we checked, or the latest version.

Read SKILL.md first
MIT
Licence
1.2k
Repo stars
Publisher
Files

What it can touch

From the files and frontmatter at commit 0365f57. This is how much a skill can do, not whether it is risky.

Pattern check

Pattern check: nothing flagged · commit 0365f57 · 29 Oct 2026

We checked every text file in this skill, at commit 0365f57 on 29 Oct 2026, against 45 published patterns such as download-and-run commands, hidden text and credential access. We don't run the skill, we don't read the web pages it points to, and we can't judge everything its instructions might lead an agent to do. In published tests, pattern checks like this one missed most malicious skills. Read the skill before you install it — especially anything it asks you to download or run.

How the check worksReport an incorrect finding

  • https://www.microsoft.com/en-us/download/details.aspx?id=55319

Format check

Each agent reads SKILL.md a little differently. We check the file against each one's published rules; we don't run the skill in any agent.

  • Agent Skills specPasses with warnings

    The open format from agentskills.io, held to what the strictest agents enforce, so one folder loads everywhere.

    • Warning

      The body is 602 lines; the spec suggests under 500. B1

      Fix: Move detailed sections into reference files and link to them from SKILL.md.

    • Warning

      The body is about 6,067 tokens (approx.); the spec suggests under 5,000. B2

      Fix: Move detail into reference files that the agent reads only when needed.

    • Warning

      Paths that may not work once the skill is installed: line 609: ../cis-benchmarks/ (outside the skill folder), line 610: ../../../infrastructure/servers/windows-server/ (outside the skill folder) and line 611: ../linux-hardening/ (outside the skill folder). B6

      Fix: Use forward-slash paths relative to SKILL.md, and copy shared files into the skill.

  • Claude CodePasses with warnings

    Claude Code reads its own extra fields, ignores unknown ones, and still loads a skill whose frontmatter is broken, without its fields.

    • Warning

      Paths that may not work once the skill is installed: line 609: ../cis-benchmarks/ (outside the skill folder), line 610: ../../../infrastructure/servers/windows-server/ (outside the skill folder) and line 611: ../linux-hardening/ (outside the skill folder). B6

      Fix: Use forward-slash paths relative to SKILL.md, and copy shared files into the skill.

    • Note

      The body is 602 lines; the spec suggests under 500. Claude Code's docs say the same. B1

      Fix: Move detailed sections into reference files and link to them from SKILL.md.

    • Note

      The body is about 6,067 tokens (approx.); the spec suggests under 5,000. After compaction Claude Code keeps only the first 5,000 tokens of a skill. B2

      Fix: Move detail into reference files that the agent reads only when needed.

  • Claude apps & API uploadPasses with warnings

    Uploading to claude.ai or the Claude API, or packaging with Anthropic's script, accepts only the six spec fields and stops on anything else.

    • Warning

      Paths that may not work once the skill is installed: line 609: ../cis-benchmarks/ (outside the skill folder), line 610: ../../../infrastructure/servers/windows-server/ (outside the skill folder) and line 611: ../linux-hardening/ (outside the skill folder). B6

      Fix: Use forward-slash paths relative to SKILL.md, and copy shared files into the skill.

    • Note

      The body is 602 lines; the spec suggests under 500. Anthropic's guidance says the same. B1

      Fix: Move detailed sections into reference files and link to them from SKILL.md.

    • Note

      The body is about 6,067 tokens (approx.); the spec suggests under 5,000. Anthropic's guidance says the same. B2

      Fix: Move detail into reference files that the agent reads only when needed.

  • OpenAI (Codex & API)Passes with warnings

    Codex finds SKILL.md by its exact name and needs a description; OpenAI's Skills API checks the frontmatter against the spec and caps uploads.

    • Warning

      Paths that may not work once the skill is installed: line 609: ../cis-benchmarks/ (outside the skill folder), line 610: ../../../infrastructure/servers/windows-server/ (outside the skill folder) and line 611: ../linux-hardening/ (outside the skill folder). B6

      Fix: Use forward-slash paths relative to SKILL.md, and copy shared files into the skill.

  • VS Code & CopilotPasses with warnings

    VS Code reads skills one folder below .github/skills, .claude/skills or .agents/skills and falls back to the folder name when the name is missing or differs; GitHub's Copilot docs require the exact name SKILL.md.

    • Warning

      Paths that may not work once the skill is installed: line 609: ../cis-benchmarks/ (outside the skill folder), line 610: ../../../infrastructure/servers/windows-server/ (outside the skill folder) and line 611: ../linux-hardening/ (outside the skill folder). B6

      Fix: Use forward-slash paths relative to SKILL.md, and copy shared files into the skill.

SKILL.md

Files

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