What does the Writer agent do? Writer is an editor. It edits for clarity, conciseness, structure, grammar, active voice, tone and style consistency while keeping the author’s voice and intent. Every edit is visible: tracked changes with before/after comparisons, a change log with category codes (G: grammar, C: clarity, X: conciseness, T: tone, S: structure) and a one-sentence reason for each change, plus a word-count change so you can see what was cut.