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 - [Agent Skills](https://arxiv.org/abs/2602.08004) - Data-driven analysis: the ecosystem, opportunities, and risks behind 40,000+ Claude Skills
 
 ## 🗂️ Collections
+
 - [@clawfu/mcp-skills](https://github.com/guia-matthieu/clawfu-skills) - 169 expert-sourced marketing skills (Dunford, Schwartz, Ogilvy, Cialdini) as MCP server with brand memory.
 - [wondelai/skills](https://github.com/wondelai/skills) - 25 agent skills for UX design, marketing/CRO, sales, product strategy, and growth based on books by Norman, Cialdini, Ries, Hormozi, and others.
 - [devmarketing-skills](https://github.com/jonathimer/devmarketing-skills) - 33 skills for developer marketing — HN strategy, technical tutorials, docs-as-marketing, Reddit engagement, developer onboarding, newsletters, and SEO for devtools.
@@ -192,6 +193,8 @@
 - [AlterLab-FC-Skills](https://github.com/AlterLab-IEU/AlterLab-FC-Skills) - 72 agentic skills for creative technology workflows across 11 domains.
 - [AlterLab-Academic-Skills](https://github.com/AlterLab-IEU/AlterLab-Academic-Skills) - 186+ academic research skills across 13 domains for higher education and research.
 - [AlterLab_GameForge](https://github.com/AlterLab-IEU/AlterLab_GameForge) - 34 game development skills covering design, mechanics, and production pipelines.
+- [Claude Code SDK](https://github.com/SeifBenayed/claude-code-sdk) - Open-source, provider-agnostic CLI for AI agents. 13 providers, built-in tools, skill marketplace.
+
 
 ## 🤝 Contribution