hol-guard

Name: hol-guard Review
Item: hol-guard
Rating: 3.6
Author: Aaron Matthews

Skill Security Solid

Works inClaude Code

Solid Scanned — metadata only

Prevents AI agents from executing unauthorized tools, accessing secrets, or running malicious code—critical for enterprises deploying autonomous agents in pr…

Open-source antivirus for AI agents: block risky tools, secret access, prompt injection, malicious packages, MCP servers, plugins, and skills at runtime.

Block unauthorized tool access when AI agents attempt to use secrets or credentials
Detect and prevent prompt injection attacks targeting deployed AI agent systems
Stop installation of malicious packages and untrusted plugins before runtime execution

964 starsApache-2.0 (commercial OK)FreeQuick setup

Why it matters

Prevents AI agents from executing unauthorized tools, accessing secrets, or running malicious code—critical for enterprises deploying autonomous agents in production without sandbox constraints.

Best for

Platform teams and security engineers securing AI agent deployments against tool misuse and injection attacks.

Works in

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Source

https://github.com/hashgraph-online/hol-guard

By hashgraph-online

How to Get It

Option 1: Claude Desktop App (Code Mode)Click the + button next to the prompt box → Plugins → Add plugin. Search and click Install. Skills work in Claude Code only.

Option 2: Paste into Claude CodeCopy the command below and paste it into your conversation. Claude will install it.

Command

claude plugins install hashgraph-online/hol-guard

Tip: Paste this into a Claude Code conversation. Verify command matches your Claude Code version.

Auto-generated from the tool's public listing — not hands-on verified. Cross-check against the source repo's README before running.

First thing to try

After installing, paste this into Claude:

Help me block unauthorized tool access when AI agents attempt to use secrets or credentials

CostFree

Trust Signals Auto-scanned

Stars964Contributors132Last updated2026-10-22LicenseApache-2.0 (OK for commercial use)Known CVEsNone foundSources: GitHub Advisory Database + OSV.dev · Scanned 2026-10-22 · scanner v1

Reviewer notes

Auto-scanned review. These are observations, not a security certification.

Scored from trust signals (evidence-eval-v1): 868 GitHub stars; contributors unknown; last commit 0d ago; license Apache-2.0.

Things to check

Scanned, not hands-on tested — this entry was auto-scanned from public metadata (GitHub metrics, license, security flags). No reviewer has run it, and no tool-specific limitations have been documented yet.

How to evaluate tools before deploying →

Data shown here comes from public APIs and automated scanning. Reviewer notes reflect one person's experience. This is not a security certification or legal recommendation. Always evaluate tools according to your own organization's policies.

Evaluation Scores

Evaluation

Ease of Use

4/5

Versatility

4/5

Reliability

3/5

Security

3/5

Overall score3.60 / 5.00 SolidEvaluatedOct 2026

Scored from trust signals (evidence-eval-v1): 868 GitHub stars; contributors unknown; last commit 0d ago; license Apache-2.0.

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