Alternatives

Products that do what CastKit does

The trusted marketplace for AI agent skills.

1. 1
   Skillkit▲252

   The package manager for AI agent skills

   Feb 2026 · agenstskills.com

2. 2
   skills.sh▲322

   The Open Agent Skills Ecosystem

   Jan 2026 · skills.sh

3. 3
   ActionKit▲367

   Instantly add 1000+ integration actions to your AI agent

   2025

4. 4
   Venn.ai▲337

   Delegate real work to AI agents with safety guardrails

   Mar 2026 · venn.ai

5. 5
   AI SDR-Kit▲504

   Build your own AI-Sales agent

   2025

6. 6
   Skill Inspector▲84

   Audit your AI agent skills to avoid malware

   Apr 2026 · labs.snyk.io

7. 7AJ
   AgentKit – JavaScript Alternative to OpenAI Agents SDK with Native MCP▲64

   Hi HN! I’m Tony, co-founder of Inngest. I wanted to share AgentKit, our Typescript multi-agent library we’ve been cooking and testing with some early users in prod for months. Although OpenAI’s Agents SDK has been launched since, we think an Agent framework should offer more deterministic and flexible routing, work with multiple model providers, embrace MCP (for rich tooling), and support the unstoppable and growing community of TypeScript AI developers by enabling a smooth transition to production use cases. This is why we are building AgentKit, and we’re really excited about it for a few…

   2025 · github.com

8. 8
   SClawHub▲96

   Security scanner for OpenClaw AI agent skills

   Feb 2026 · sclawhub.com

9. 9
   Kit For AI▲83

   The memory layer for AI agents

   Jul 2026 · kitforai.com

10. 10
    AI Agent Skills Refiner▲85

    Skills with 210k GitHub Data & Translate/Refine &Benchmark

    Mar 2026 · skills-refiner.com

11. 11
    SkillShield▲73

    Security-scored directory for AI skills and agent tools

    Feb 2026 · skillshield.io

12. 12SO
    SkillGraph – Open-source agentic framework with skills instead of tools▲19

    Nov 2025 · github.com

13. 13
    SkillGuard▲2

    Scans AI agent skills for malicious code

    11d ago · github.com

14. 14
    CastSpells.io▲8

    AI-native product management

    Jan 2026

15. 15
    AgentKit▲1

    Ship AI agents without rebuilding the stack

    Jan 2026

16. 16
    skillgaurd▲11

    Detect Security Threats in Agent Skills

    Jan 2026

17. 17
    RoleCraft▲4

    Install AI agent skills as roles & behaviors from any source

    Jul 2026 · github.com

18. 18
    Skill Control Plane▲5

    Governance for AI agent skills — MCP-native

    Apr 2026

19. 19
    AgentSkills▲9

    #agents #ai #developers #automation #opensource

    Jan 2026 · agentskills.to

20. 20
    SkillDepot▲2

    AI Agent Skills Marketplace

    Jun 2026

21. 21
    SkillDuck: The GUI for AI Agent Skills▲5

    Visual GUI to manage Agent Skills across the AI ecosystem.

    Feb 2026 · github.com

22. 22
    MintyCode▲11

    Turn your expertise into AI agents others can trust

    Apr 2026 · mintycode.io

23. 23AS
    AgentKitten: Swift package for provider-agnostic AI agents▲10

    Jun 2026 · github.com

24. 24
    Cast▲6

    The world's first AI character casting agency

    Apr 2026 · castability.ai

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