Is this AI skill safe to install? Try ESET AI Skills Checker

AI agents rely on skills to perform tasks. Skills are updated frequently and can contain hidden risks. The ESET AI Skills Checker analyzes any skill URL in real time, detecting signs of malicious activity before you install it.

How does it work?

HOW DOES ESET AI SKILLS CHECKER WORK?

The ESET AI Skills Checker quickly evaluates skills from marketplaces and registries to help protect your AI agent, data, and workspace. It does this by:

  • Cross-referencing trust signals

    Skill metadata, publisher reputation, dependency hints, and known threat indicators are checked against continuously updated security intelligence.

  • Rapid verdict delivery

    You'll quickly see whether a skill appears as safe, not safe, or suspicious before installation.

Safe Link
safe skill/link

You're safe!

Great news—this link or skill passed our current validation checks. We found no clear signs of malicious behavior, phishing scams, suspicious install instructions, or high-risk trust signals. For stronger protection, ESET Home Security helps block emerging threats in real time.

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Not Safe link
×not safe

Warning: dangerous link!

This URL is unsafe and could expose you to risks such as malware, identity theft, or financial fraud. Try ESET HOME Security to automatically block threats like these.

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Not Safe link
×not safe skill

Warning: dangerous skill!

This skill appears unsafe and could expose your workspace, credentials, or sensitive data. It may contain risky instructions, malicious code, phishing tactics, or signs of having been tampered with. Proactively block threats like these with ESET HOME Security.

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Warning
×suspicious

Caution advised: we can't confirm if this link is entirely safe.

We didn't detect any obvious threats, but this website has some signs that indicate potential risk. Exercise caution before sharing personal or financial information, and consider double-checking with additional tools or by contacting the website owner directly.

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Warning
×suspicious skill

CAUTION: THIS SKILL SHOWS RISKY BEHAVIOR. WE DO NOT RECOMMEND IT.

We did not detect definitive malicious behavior, but this skill shows one or more warning signs, such as limited provenance, unclear permissions, risky dependencies, or instructions that warrant manual review. We do not recommend using it. If you still choose to proceed, use caution and verify the publisher before installing or granting access.

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More than a static scan. A full behavioral analysis.

Most scanners look at what a skill says. ESET analyzes what it does, including how it behaves in an AI agent conversation

Skill content analysis

Skills often reference external URLs on sites like GitHub, GitLab, paste services, and payload-hosting sites. We extract every URL the skill references and check it against ESET threat databases and real-time analysis.

Full payload chain analysis

We simulate the skill in a sandboxed AI agent context. This helps identify risks that only emerge during extended interactions.

We analyze the full skill file, including every command, script, code block, and configuration. We look for malicious instructions, hidden payloads, and excessive permissions that pattern-only tools miss.

External URL extraction and checking

We trace the full download-and-execute chain, not just the first link. If a skill fetches a script that downloads another payload, we follow the entire sequence to uncover threats hidden behind multiple layers.

Behavioral simulation in a sandboxed environment

Skill content analysis

External URL extraction and checking

Full payload chain analysis

Behavioral simulation in a sandboxed environment

We analyze the full skill file, including every command, script, code block, and configuration. We look for malicious instructions, hidden payloads, and excessive permissions that pattern-only tools miss.

Skills often reference external URLs on sites like GitHub, GitLab, paste services, and payload-hosting sites. We extract every URL the skill references and check it against ESET threat databases and real-time analysis.

We trace the full download-and-execute chain, not just the first link. If a skill fetches a script that downloads another payload, we follow the entire sequence to uncover threats hidden behind multiple layers.

We simulate the skill in a sandboxed AI agent context. This helps identify risks that only emerge during extended interactions.

More than just pattern scanning

Most AI skill scanners look for known threat patterns and stop there. ESET goes further—because real threats are built to slip past simple detection.

Broader repository coverage

We review skills from public repositories as well as any external sources they reference. We look far beyond the first URL.

Multilayer ESET detection engines

We combine the same detection engines powering ESET’s trusted security products—with specialized AI behavioral models built for AI agent tools. Multiple layers catch what a single layer misses.

Sandboxed behavioral simulation

We use sandboxed behavioral simulation in an AI agent context to help uncover risks that emerge over extended interactions.

Full payload chain tracing

A skill can hide malicious intent through a chain of downloads, where one script downloads another file or payload (malicious code). We trace every link in the chain, not just the first one.

Checking one skill is a start.
Protecting every interaction is the ESET standard.

The ESET AI Skills Checker helps you assess whether a single skill is safe before you install it.
But AI agents evolve, skills update, and new threats emerge every day.


ESET HOME Security delivers continuous, automated protection across your digital life, including the AI tools and agents you rely on. The same threat intelligence powering this tool works in real time—every hour, every day, and without slowing your devices.

Anti-Phishing

Blocks phishing sites and scam links in real time across browsers, social media, SMS, and email—stopping threats before they reach you.

Malware Protection

Detects and removes malware, including threats delivered via AI agent skills, scripts, or downloaded payloads.

Browser Privacy & Security

Adds a real-time layer of protection inside your browser—blocking malicious sites and unauthorized trackers that AI tools may access behind the scenes.

Safe Banking & Browsing

Protects your online banking, shopping, and browsing by isolating transactions from potential interference by AI agent tools.

Identity Protection

Monitors for data breaches and suspicious activity involving your personal information, including credentials that an AI skill may attempt to collect.

VPN

Encrypts your internet connection—especially on public Wi-Fi—protecting you from man-in-the-middle attacks and data interception by scammers.

AI agent security is not a single scan—it is a system.

ESET HOME Security combines these layers to deliver continuous, intelligent protection as AI becomes a larger part of how you work and live.

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Dos and Don'ts of AI Skill installation

Before you install any AI skill

  1. Check the skill URL with ESET AI Skills Checker.
  2. Review the skill's permissions. If something seems excessive, it probably is.
  3. Look up the author. Established, verifiable authors are generally lower risk.
  4. Check for community reviews and issue reports on the repository.
  5. Keep your AI platform and agent software updated.

Red flags to watch for
when installing any skill

  • The skill requests permissions far beyond what its stated purpose requires.
  • The skill loads code from an external URL unrelated to the author's domain.
  • The skill author has no verifiable identity or reputation on the repository.
  • The skill was published very recently with no reviews or usage history.
  • The skill's code is obfuscated or uses encoded strings.

Frequently Asked Questions

About ESET AI Skill Checker
 

What is ESET AI Skills Checker?

ESET AI Skills Checker is a free tool that analyzes AI agent skills from popular repositories to determine whether they are safe. Using ESET product engines, it delivers multilayer detection that goes far beyond pattern-based scanning. It extracts and checks all external URLs referenced by a skill, traces full payload chains, and runs sandboxed behavioral simulations in an AI agent context.

Which AI skill repositories does it support?

ESET AI Skills Checker supports ClawHub (OpenClaw), playbooks.com, skills.sh, and other popular skill repositories. It also checks backing repositories that skills may reference, including GitHub, GitLab, paste services, and payload-hosting sites.

What is a Not Safe Skill verdict?

A Not Safe Skill verdict means the skill is unsafe and may expose your workspace, credentials, or sensitive data. It may contain risky instructions, malicious code, phishing tactics, or signs of tampering. Do not install it.

What is a Suspicious Skill verdict?

A Suspicious Skill verdict means the skill behaves in a risky way. We do not recommend using it. While it has not been confirmed as malicious, its behavioral patterns indicate a potential security risk.

Is ESET AI Skills Checker free?

Yes! ESET AI Skills Checker is free to use. No account, subscription, or credit card is required.

What are AI skills,
and why do they matter for my security?

What is an AI skill?

An AI skill is a tool or add-on that gives an AI agent new or enhanced abilities. It tells the agent how to perform tasks, what tools or services to use, and what actions to take. Think of AI skills as apps—ones that work behind the scenes, inside your AI agent.

How can a skill be malicious?

  • It may instruct the agent to secretly send out data to an external server.
  • It may contain a script that downloads and runs malicious code when activated.
  • It may use prompt injection to override the agent's instructions and make it act against your interests.
  • It may gradually change agent behavior over multiple interactions before revealing its true intent.

Why static scanning is not enough?

Malicious skills are written to appear harmless at first glance. They may load malicious code from an external URL or activate only under certain conditions that a one-time scan does not detect. This is why ESET uses behavioral simulation—to identify threats in context and in real time.

What to do if a skill was already installed?

If you installed a skill that is later flagged as unsafe or suspicious, remove it immediately from your agent's skill list. Change any passwords or credentials the agent had access to during its active period. If the skill was granted access to files, email, or external accounts, review recent activity in those services and revoke any permissions the agent was given.

Scan the skill. Then secure everything.

A one-time scan is a strong first step, but ongoing protection keeps you safe as threats evolve

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