Write and rewrite business and personal prose that is ready to send — emails, LinkedIn and X posts, newsletters, product descriptions, bios, job posts, proposals, blog posts, and website copy. Writes to the real length limit of wherever the piece is going, never invents facts, and hands back the piece itself with no preamble and no menu of variations. Matches a voice sample when one is given.
Install
npx skills add b12io/b12-plugins --skill writernpx skills add b12io/b12-plugins --skill writer -a claude-code -gnpx skills add b12io/b12-plugins --skill writer -a codex -ggemini skills install https://github.com/b12io/b12-plugins.git --path plugins/writer/skills/writergh skill install b12io/b12-plugins writergit clone --depth 1 https://github.com/b12io/b12-plugins /tmp/b12io__b12-plugins
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/b12io__b12-plugins/plugins/writer/skills/writer ~/.claude/skills/writer # Claude Code
cp -R /tmp/b12io__b12-plugins/plugins/writer/skills/writer ~/.agents/skills/writer # Codex, Cursor, Gemini CLI, Copilot, OpenCode