Strunk's Elements of Style, distilled into a Claude skill. This applies the 1918 classic's grammar and composition rules to whatever you're writing. The skill emphasizes the heavy hitters: active voice, positive statements, concrete language, cutting needless words, and putting punch at sentence end. It's the full public domain text, so you get detailed explanations and examples for each rule. Use it when you're writing docs, READMEs, or anything humans need to understand quickly. Fair warning: Strunk is prescriptive and occasionally dated, but the core advice about clarity and brevity still cuts through modern verbosity like nothing else.
npx skills add https://github.com/neolabhq/context-engineering-kit --skill write-concisely