Write English that a reader cannot misread: one meaning per word, active voice, simple tenses, one idea per sentence, short sentences. Based on ASD-STE100 (Simplified Technical English), the controlled-language standard written for aircraft maintenance manuals. Use it for any prose an agent produces that someone else acts on.
Install
npx skills add PostHog/ai-plugin --skill writing-simplified-technical-englishnpx skills add PostHog/ai-plugin --skill writing-simplified-technical-english -a claude-code -gnpx skills add PostHog/ai-plugin --skill writing-simplified-technical-english -a codex -ggemini skills install https://github.com/PostHog/ai-plugin.git --path skills/writing-simplified-technical-englishgh skill install PostHog/ai-plugin writing-simplified-technical-englishgit clone --depth 1 https://github.com/PostHog/ai-plugin /tmp/PostHog__ai-plugin
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/PostHog__ai-plugin/skills/writing-simplified-technical-english ~/.claude/skills/writing-simplified-technical-english # Claude Code
cp -R /tmp/PostHog__ai-plugin/skills/writing-simplified-technical-english ~/.agents/skills/writing-simplified-technical-english # Codex, Cursor, Gemini CLI, Copilot, OpenCode