Skills, tools and knowledge bases are what make Claude Desktop productive in the first place. Used well they save time; used badly they turn into the next flood of plugins. Here I sort out the terms and show how a shared skill library stays clean in a team.<\/p>\n\n
Skill: instructions for a recurring task.<\/strong> A skill bundles the description, the prompts and the examples for one clearly scoped task. Claude picks it as soon as the task matches the description.<\/p>\n\n Tool: a concrete function Claude is allowed to call.<\/strong> Tools usually reach the app through MCP servers. A tool sends an email, reads a file or creates an appointment, one atomic command with an input and an output.<\/p>\n\n Extension: a bundle of skills, tools and configuration.<\/strong> An extension packages a set that belongs together, for research or code review, say. You install it once and get a consistent experience.<\/p>\n\n Knowledge base: a structured store of knowledge.<\/strong> A knowledge base supplies Claude with long-lived context, product documentation, brand rules or frequent answers. It complements skills, it does not replace them.<\/p>\n\n A clear task description.<\/strong> The front matter states when the skill applies. If the description is vague, Claude will either pick it too rarely or too often.<\/p>\n\n Two or three examples.<\/strong> Concrete before-and-after examples beat abstract rules. In daily use, a skill without examples feels like a template nobody opens.<\/p>\n\n The expected output format.<\/strong> Markdown, a table, JSON or free text, define the result and you get reliable output.<\/p>\n\n Clean boundaries.<\/strong> A skill should describe what it does not do. That is how you avoid hallucinations at the edges of the task.<\/p>\n\n I introduce five ground rules as soon as more than three people are involved.<\/p>\n\n Recurring questions.<\/strong> If the same explanation turns up in five threads a week, a knowledge base saves more time than it costs to build.<\/p>\n\n A stable source.<\/strong> Product documentation, brand rules or contracts are ideal. Content that goes out of date quickly belongs in a live source via MCP instead.<\/p>\n\nHow I write skills that survive daily use<\/h2>\n\n
How to avoid the plugin graveyard<\/h2>\n\n
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When a knowledge base really pays off<\/h2>\n\n