Developer builds tool to stop Claude Code loading all skills at once, saving tokens

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A developer noticed that Claude Code sessions were slowing down and consuming thousands of tokens at startup because every installed skill's description was being loaded into the system prompt regardless of relevance. To fix this, they built an open-source tool called 'master-of' that organizes skills behind domain-specific gates — such as design, development, or research — so only the skills relevant to a given task are loaded. A session-start hook automatically flags newly installed skills for sorting, and a check-skills command lets users see which skills are gated and estimate token savings. Plugin changes only take effect on restart, ensuring users remain in control of any modifications. The tool is MIT licensed, requires Bun or Node 22.6+, and is available on GitHub at devrudals/master-of.

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