head to head · open source
SkillSpector vs AI-Infra-Guard
SkillSpector has 17,624 GitHub stars, 1,504 forks, 136 open issues and last shipped yesterday. AI-Infra-Guard has 6,415 stars, 594 forks, 35 open issues and last shipped yesterday. SkillSpector leads on adoption by 175% (17,624 vs 6,415 stars). SkillSpector is written in Python under Apache-2.0; AI-Infra-Guard is written in Python under Apache-2.0. SkillSpector has attracted 9% as many forks as stars, AI-Infra-Guard 9%. SkillSpector was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 3 topic tags (agent-security, agentic-ai, 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 | AI-Infra-Guard | |
|---|---|---|
| GitHub stars | ★ 18K | ★ 6.4K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Python | Python |
| Last push | 2026-09-17 | 2026-09-17 |
| Forks | ⑂ 1.5K | ⑂ 594 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick SkillSpector if
- You weight community size — 18K 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 AI-Infra-Guard if
- You want the AI-Infra-Guard feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Python
- You evaluated both and AI-Infra-Guard fits your workflow better
About SkillSpector
SkillSpector is an open source security scanner for AI agent skills that detects vulnerabilities, malicious patterns, prompt injection, data exfiltration, and supply chain risk in Claude Code, Codex CLI, Gemini CLI, and MCP skills before they are installed — built for developers who install agent skills and for security teams that vet or publish them.
read the full SkillSpector overview →
About AI-Infra-Guard
AI Infra Guard (A.I.G) is a full stack AI red teaming platform from Tencent Zhuque Lab that scans agents, MCP servers, agent skills and AI infrastructure for security risk and evaluates large language models against jailbreak attacks, built for security engineers and AI platform teams that need to self examine their own AI deployments.
read the full AI-Infra-Guard overview →
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Frequently asked questions
Is SkillSpector or AI-Infra-Guard more popular?
SkillSpector has 17,624 GitHub stars and AI-Infra-Guard has 6,415. SkillSpector has the larger community by that measure.
Are SkillSpector and AI-Infra-Guard free?
Both are open source. SkillSpector is licensed under Apache-2.0 and AI-Infra-Guard under Apache-2.0. Neither carries a licence fee.
What is the difference between SkillSpector and AI-Infra-Guard?
SkillSpector is written in Python and AI-Infra-Guard 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 AI-Infra-Guard?
Choose SkillSpector if you want the larger community (17,624 stars) or its Apache-2.0 licence terms. Choose AI-Infra-Guard if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.