Skill Inspector
NVIDIA/SkillSpector
Decides whether an agent skill is safe to install by combining a SkillSpector static scan with the agent's own source review, ending in APPROVE, CAUTION or REJECT.
Use HOL Guard to preview and protect AI-agent package installs, Cursor surfaces, CI, and automation workflows.
Install Hol Guard Protection
$ npx skills add hashgraph-online/hol-guard --skill hol-guard-protection -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install hashgraph-online/hol-guard hol-guard-protection --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/hashgraph-online/hol-guard.git skills-src && mkdir -p .claude/skills && cp -r skills-src/docs/guard .claude/skills/hol-guard-protection && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "hol-guard-protection" agent skill from https://github.com/hashgraph-online/hol-guard/tree/main/docs/guard into .claude/skills/hol-guard-protection/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "hol-guard-protection", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/hashgraph-online/hol-guard/tree/main/docs/guardType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add hashgraph-online/hol-guard --skill hol-guard-protection -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install hashgraph-online/hol-guard hol-guard-protection --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/hashgraph-online/hol-guard.git skills-src && mkdir -p .agents/skills && cp -r skills-src/docs/guard .agents/skills/hol-guard-protection && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "hol-guard-protection" agent skill from https://github.com/hashgraph-online/hol-guard/tree/main/docs/guard into .agents/skills/hol-guard-protection/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "hol-guard-protection", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add hashgraph-online/hol-guard --skill hol-guard-protection -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install hashgraph-online/hol-guard hol-guard-protection --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/hashgraph-online/hol-guard.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/docs/guard .cursor/skills/hol-guard-protection && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "hol-guard-protection" agent skill from https://github.com/hashgraph-online/hol-guard/tree/main/docs/guard into .cursor/skills/hol-guard-protection/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "hol-guard-protection", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/hashgraph-online/hol-guard.git --path docs/guard--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add hashgraph-online/hol-guard --skill hol-guard-protection -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install hashgraph-online/hol-guard hol-guard-protection --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/hashgraph-online/hol-guard.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/docs/guard .gemini/skills/hol-guard-protection && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "hol-guard-protection" agent skill from https://github.com/hashgraph-online/hol-guard/tree/main/docs/guard into .gemini/skills/hol-guard-protection/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "hol-guard-protection", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install hashgraph-online/hol-guard hol-guard-protectionInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add hashgraph-online/hol-guard --skill hol-guard-protection -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/hashgraph-online/hol-guard.git skills-src && mkdir -p .github/skills && cp -r skills-src/docs/guard .github/skills/hol-guard-protection && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "hol-guard-protection" agent skill from https://github.com/hashgraph-online/hol-guard/tree/main/docs/guard into .github/skills/hol-guard-protection/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "hol-guard-protection", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add hashgraph-online/hol-guard --skill hol-guard-protection -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install hashgraph-online/hol-guard hol-guard-protection --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/hashgraph-online/hol-guard.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/docs/guard .opencode/skills/hol-guard-protection && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "hol-guard-protection" agent skill from https://github.com/hashgraph-online/hol-guard/tree/main/docs/guard into .opencode/skills/hol-guard-protection/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "hol-guard-protection", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
hol-guard-protection- GitHub stars
- 838
- Token cost
- ~605 tokens
- SKILL.md length
- 296 words
- Files
- 270
- Skills in repo
- 4
- Repo updated
- First seen
- Licence
- Apache-2.0
At a glance
Use HOL Guard to preview and protect AI-agent package installs, Cursor surfaces, CI, and automation workflows.
- Works in 5 steps: Preview the install decision → Check current workspace risk posture → Explain a specific package verdict → …
- Tasks that involve Workflow automation
- SKILL.md covers Before package installs, Cursor editor and Cursor CLI, During CI and automation and If Guard blocks a package
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Hol Guard Protection is an agent skill from hashgraph-online/hol-guard. Use HOL Guard to preview and protect AI-agent package installs, Cursor surfaces, CI, and automation workflows.
Its SKILL.md is about 610 tokens, which your agent loads only when the skill is triggered. The skill folder holds 271 other files (for example `adr/0001-mdm-managed-install-contract.md`, `adr/0002-self-protection-authority.md` and `adr/0003-desktop-shell-and-tray-ownership.md`).
It sits in Security, covering Workflow automation, Prompt injection and agent security and Supply chain security. It works with Model Context Protocol and npm. The repository describes itself as: Open-source antivirus for AI agents: block risky tools, secret access, prompt injection, malicious packages, MCP servers, plugins, and skills at runtime. The licence is Apache-2.0.
When your agent uses it
- Tasks that involve Workflow automation
- Tasks that involve Prompt injection and agent security
- Tasks that involve Supply chain security
Example prompts
- “/hol-guard-protection”
Requirements
- Node.js
Workflow steps
5 steps, taken from the first numbered list in SKILL.md.
- Preview the install decision
- Check current workspace risk posture
- Explain a specific package verdict
- Confirm package manager interception is installed
- Repair a missing or tampered package manager shim
What it can do on your machine
Read from SKILL.md and the folder at commit a3b4f6b. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Hol Guard Protection loads about 605 tokens when it runs. Until then it costs about 33 tokens; SKILL.md has 296 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from hashgraph-online/hol-guard at commit a3b4f6b, republished under its Apache-2.0 licence (© hashgraph-online). 296 words, ~605 tokens.
Download SKILL.mdSave it as
.claude/skills/hol-guard-protection/SKILL.md (or your agent's skills folder). This skill also uses 269 other files; get the full folder from GitHub.- name
- hol-guard-protection
- description
- Use HOL Guard to preview and protect AI-agent package installs, Cursor surfaces, CI, and automation workflows.
HOL Guard Skill Guidance
Use this guidance when an AI agent is about to add or update dependencies.
Before package installs
- Preview the install decision:
hol-guard protect --dry-run -- npm install <package>
- Check current workspace risk posture:
hol-guard supply-chain scan --json
- Explain a specific package verdict:
hol-guard supply-chain explain <package>@<version> --ecosystem <ecosystem>
- Confirm package manager interception is installed:
hol-guard package-shims status --json
- Repair a missing or tampered package manager shim:
hol-guard package-shims repair --manager npm --json
Cursor editor and Cursor CLI
Cursor has two protection surfaces. Cursor editor covers MCP servers in .cursor/mcp.json. Cursor CLI covers the cursor-agent command path. Keep them distinct when activating, checking, repairing, or removing Guard.
- Connect Cursor editor protection:
hol-guard apps connect cursor --surface editor
- Connect Cursor CLI protection:
hol-guard apps connect cursor --surface cli
- Test a Cursor surface without changing config:
hol-guard apps test cursor --surface editorhol-guard apps test cursor --surface cli
- Repair only the stale surface named by Guard Cloud:
hol-guard apps repair cursor --surface editorhol-guard apps repair cursor --surface cli
- Remove protection only after confirmation:
hol-guard apps disconnect cursor --surface editor --confirm disconnect-cursorhol-guard apps disconnect cursor --surface cli --confirm disconnect-cursor
Guard owns trust checks, drift repair, redacted receipts, and Cloud sync. Cursor owns its native editor and CLI behavior. If a surface is missing, unsupported, or unavailable, report that state instead of inventing an install URL or fallback command.
During CI and automation
- Route dependency installs through Guard:
hol-guard protect -- npm ci
- Use workspace audits before release:
hol-guard supply-chain audit --json
If Guard blocks a package
- Review the blocking reason and suggested fix version.
- Prefer upgrading to a safe version.
- If it is a verified false positive, use a scoped and expiring exception with recorded reason.
© hashgraph-online, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 269 other files in docs/guard of hashgraph-online/hol-guard.
- SKILL.md
- adr/0001-mdm-managed-install-contract.md
- adr/0002-self-protection-authority.md
- adr/0003-desktop-shell-and-tray-ownership.md
- adr/0004-extension-control-center-semantics.md
- adr/0005-protection-center-semantics.md
- adr/0006-native-rust-runtime-boundary.md
- adr/0007-native-runtime-packaging.md
- adr/0008-native-resident-protocol-and-admission.md
- adr/0009-native-and-daemon-critical-failure.md
- adr/0010-native-posttool-default-auto.md
- adr/0011-extension-first-managed-controls.md
- adr/0012-everyday-and-technical-presentation.md
- adr/0012-python-hook-capability-cleanup.md
- adr/0013-native-resident-retirement.md
- adr/0014-native-catalog-read-model.md
- all-harness-hook-review.md
- architecture.md
- audits/rm011-rtm006-gap-report.md
- … and 251 more
Open the folder on GitHubat commit a3b4f6b
Compare with similar skills
Hol Guard Protection next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Hol Guard Protection this skillhashgraph-online/hol-guard | 838 | — | ~605 | Automated safety check: Pass | Apache-2.0 | |
| Skill InspectorNVIDIA/SkillSpector | 20k | — | ~1.8k | Automated safety check: Pass | Apache-2.0 | |
| Reins Runtime Securitypegasi-ai/reins | 392 | — | ~1.4k | Automated safety check: Warn | Apache-2.0 | |
| Plugin Scanneriflytek/skillhub | 5.2k | 2 repos | ~1.1k | Automated safety check: Notes | Apache-2.0 | |
| Securing AI Systemstrilwu/secskills | 157 | — | ~2.9k | Automated safety check: Pass | MIT | |
| Securitytelagod/code-abyss | 244 | — | ~907 | Automated safety check: Pass | MIT |
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- Official
Reins Runtime Security
pegasi-ai/reins
Installs hooks that check each agent action against security policies before it runs, blocking destructive commands and logging every decision.
Plugin Scanner
iflytek/skillhub
Scan AI agent skills, plugins, MCP servers, and agent tooling for prompt injection, unsafe commands, secret exposure, and supply-chain risks before installing or trusting them.
Securing AI Systems
trilwu/secskills
Assess and harden LLM applications and agentic systems against prompt injection, tool misuse, excessive agency, memory poisoning, RAG data leakage, and model supply-chain risk, mapped to the OWASP…
Security
telagod/code-abyss
Defensive security engineering judgment, distilled from a stronger model - invoke when THREAT MODELING a system or feature; making security-relevant design decisions (auth, crypto, trust boundaries…
Vulners API Python SDK
vulnersCom/api
A skill your agent uses when modifying, testing, documenting, or reviewing the Vulners Python SDK.
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Status
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Questions about Hol Guard Protection
What does Hol Guard Protection do?
Use HOL Guard to preview and protect AI-agent package installs, Cursor surfaces, CI, and automation workflows. Hol Guard Protection is an agent skill from hashgraph-online/hol-guard. Use HOL Guard to preview and protect AI-agent package installs, Cursor surfaces, CI, and automation workflows.
When should I use Hol Guard Protection?
Hol Guard Protection fits situations like: tasks that involve Workflow automation; tasks that involve Prompt injection and agent security; tasks that involve Supply chain security.
How do I install Hol Guard Protection in Claude Code?
Run `npx skills add hashgraph-online/hol-guard --skill hol-guard-protection -a claude-code`. Or copy the skill folder (docs/guard in hashgraph-online/hol-guard) into .claude/skills/hol-guard-protection in your project. Claude Code loads it when a task matches its description.
How do I install Hol Guard Protection in Codex?
Run `npx skills add hashgraph-online/hol-guard --skill hol-guard-protection -a codex`. Or copy the skill folder (docs/guard in hashgraph-online/hol-guard) into .agents/skills/hol-guard-protection in your project. Codex loads it when a task matches its description.
Can I use Hol Guard Protection in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add hashgraph-online/hol-guard --skill hol-guard-protection -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/hol-guard-protection, .gemini/skills/hol-guard-protection, .github/skills/hol-guard-protection and .opencode/skills/hol-guard-protection in your project.
What does Hol Guard Protection need to run?
SKILL.md names no scripts, command-line tools or credentials: Hol Guard Protection is instructions for the agent only. Our summary lists: Node.js.
Does Hol Guard Protection access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Hol Guard Protection safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Hol Guard Protection use?
Hol Guard Protection is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Hol Guard Protection use?
About 605 tokens (SKILL.md is roughly 2.4k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Hol Guard Protection?
Skills that share tags, products or a category with Hol Guard Protection: Skill Inspector (NVIDIA/SkillSpector, 20k stars), Reins Runtime Security (pegasi-ai/reins, 392 stars), Plugin Scanner (iflytek/skillhub, 5.2k stars) and Securing AI Systems (trilwu/secskills, 157 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Hol Guard Protection?
hashgraph-online (a GitHub organization) maintains it in hashgraph-online/hol-guard, which has 838 GitHub stars. The repository holds 4 skills in this directory. The repository was last updated on October 10, 2026.
Source: hashgraph-online/hol-guard on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.