head to head · open source
SkillSpector vs PyRIT
SkillSpector has 23,981 GitHub stars, 2,070 forks, 136 open issues and last shipped yesterday. PyRIT has 4,731 stars, 1,012 forks, 281 open issues and last shipped today. SkillSpector leads on adoption by 407% (23,981 vs 4,731 stars). SkillSpector is written in Python under Apache-2.0; PyRIT is written in Python under MIT. SkillSpector has attracted 9% as many forks as stars, PyRIT 21%. PyRIT was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (ai-security), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| SkillSpector | PyRIT | |
|---|---|---|
| GitHub stars | ★ 24K | ★ 4.7K |
| License | Apache-2.0 | MIT |
| Written in | Python | Python |
| Last push | 2026-11-02 | 2026-11-03 |
| Forks | ⑂ 2.1K | ⑂ 1.0K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick SkillSpector if
- You weight community size — 24K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick PyRIT if
- You want the PyRIT feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Python
- You evaluated both and PyRIT fits your workflow better
About SkillSpector
SkillSpector Security scanner for AI agent skills. Detect vulnerabilities, malicious patterns, and security risks before installing agent skills. Overview AI agent skills (used by Claude Code, Codex CLI, Gemini CLI, etc.) execute with implicit trust and minimal vetting. In the 31,132 skill analyzed subset of the research dataset, 26.1% of skills contain vulnerabilities and 5.2% show likely malicious intent . SkillSpector helps you answer: "Is this skill safe to install?" SkillSpector is part of the NVIDIA Verified Skills pipeline, which scans, evaluates, and signs agent skills before publication. Skills that…
read the full SkillSpector overview →
About PyRIT
Python Risk Identification Tool for generative AI (PyRIT) The Python Risk Identification Tool for generative AI (PyRIT) is an open source framework built to empower security professionals and engineers to proactively identify risks in generative AI systems. Check out our website for more information about how to use, install, or contribute to PyRIT. Review our security policy to report vulnerabilities privately through the Microsoft Security Response Center. Visit our Discord server to chat with the team and community. Trademarks and Citations This project may contain trademarks or logos for projects, products…
read the full PyRIT overview →
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Frequently asked questions
Is SkillSpector or PyRIT more popular?
SkillSpector has 23,981 GitHub stars and PyRIT has 4,731. SkillSpector has the larger community by that measure.
Are SkillSpector and PyRIT free?
Both are open source. SkillSpector is licensed under Apache-2.0 and PyRIT under MIT. Neither carries a licence fee.
What is the difference between SkillSpector and PyRIT?
SkillSpector is written in Python and PyRIT in Python. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, SkillSpector or PyRIT?
Choose SkillSpector if you want the larger community (23,981 stars) or its Apache-2.0 licence terms. Choose PyRIT if its feature set, stack or MIT licence fits better. Both are self-hostable.