head to head · open source
SkillSpector vs giskard-oss
SkillSpector has 23,981 GitHub stars, 2,070 forks, 136 open issues and last shipped yesterday. giskard-oss has 5,940 stars, 560 forks, 64 open issues and last shipped yesterday. SkillSpector leads on adoption by 304% (23,981 vs 5,940 stars). SkillSpector is written in Python under Apache-2.0; giskard-oss is written in Python under Apache-2.0. SkillSpector has attracted 9% as many forks as stars, giskard-oss 9%. SkillSpector 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 | giskard-oss | |
|---|---|---|
| GitHub stars | ★ 24K | ★ 5.9K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Python | Python |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 2.1K | ⑂ 560 |
| 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 giskard-oss if
- You want the giskard-oss 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 giskard-oss 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 giskard-oss
Evals, Red Teaming and Test Generation for Agentic Systems Modular, Lightweight, Dynamic and Async first Docs • Website • Community [!IMPORTANT] Giskard v3 is a fresh rewrite designed for dynamic, multi turn testing of AI agents. This release drops heavy dependencies for better efficiency while introducing a more powerful AI vulnerability scanner and enhanced RAG evaluation — both now shipping natively in giskard scan , with no dependency on v2. Only the legacy scan for tabular/ML models remains v2 only. Giskard v2 remains available but is no longer actively maintained. Follow progress → Read the v3…
read the full giskard-oss overview →
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Frequently asked questions
Is SkillSpector or giskard-oss more popular?
SkillSpector has 23,981 GitHub stars and giskard-oss has 5,940. SkillSpector has the larger community by that measure.
Are SkillSpector and giskard-oss free?
Both are open source. SkillSpector is licensed under Apache-2.0 and giskard-oss under Apache-2.0. Neither carries a licence fee.
What is the difference between SkillSpector and giskard-oss?
SkillSpector is written in Python and giskard-oss 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 giskard-oss?
Choose SkillSpector if you want the larger community (23,981 stars) or its Apache-2.0 licence terms. Choose giskard-oss if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.