Claude Skills First Principles Analysis 1⃣ What is Claude Skills? Why is Skills a revolution in prompts rather than code execution? Many people, upon first seeing Claude Skills, think it is a "more advanced Tool Calling" and easily confuse it with Agent. But in reality, Claude Skills does not execute code; it executes runtime switching of prompts. For example: Skills is like an experienced front-end developer who can quickly tell you what you should do. Agent is like a genius with an IQ of 200 who can quickly master front-end knowledge from scratch. When we need to write front-end code, which do we need more? Clearly, it is the experienced front-end developer, Skills. This is an upgrade of the Prompt architecture, not an enhancement of functional capabilities. 2⃣ The first principle of Claude Skills: Inject high-privilege context on demand, temporarily, and in a recyclable manner. At the right time, put the correct Prompt into the context. 3⃣ Skills vs Traditional Tools: They solve completely different problems. Tool allows the model to call tools, while Skill injects through Prompt, allowing the model to "become someone." Tool returns results, Skill changes cognitive states. 4⃣ Skills vs Traditional Prompts: We no longer need to manually input Prompts all the time. The essential breakthrough of Claude Skills is: Prompts are no longer resident but loaded on demand. The model autonomously decides whether to call the Prompt. 5⃣ Good Skill content is not "long," but "progressively expandable." ...