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Best Skills

Secure Claude Skills

Security matters because skills can shape agent behavior, suggest commands, and include supporting files. Start with high-grade skills and review source before installation.

Browse Grade-A skillsHow security scanning works

Indexed skills

592,677

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Claude skill

Security context

Scanned

Top matching skills

What Grade A means

Grade-A skills have the strongest security scan results in Skills Directory. They are not a guarantee, but they are a better starting point than unreviewed random GitHub snippets.

Risks we care about

Common risk categories include prompt injection, credential theft, suspicious network calls, destructive shell commands, hidden files, obfuscation, and unsafe persistence.

Human review still matters

Security scans reduce risk, but you should still inspect source, understand commands, and avoid installing skills that request unnecessary access.

Why security-scanned skills matter

Skills can influence agent behavior, suggest commands, include helper files, or touch code and data. Skills Directory adds security context so you can inspect risk before installing a workflow from a public repo.

See the security model

Frequently asked questions

Are Grade-A Claude skills guaranteed safe?
No security grade is a guarantee. Grade A means the automated scan found fewer or lower-severity risk signals, but human review is still recommended.
What should I check before installing a skill?
Check source repo, author, files, commands, network behavior, credential handling, and whether the skill asks for permissions it does not need.
Can skills contain malware?
Skills can include malicious or risky instructions and supporting files. That is why security scanning and source review are important.