| name | writing |
| description | Use when writing or editing any prose a person will read (site copy, guides, docs, READMEs, UI text, titles, captions, emails, PR descriptions, release notes) or when a draft reads as machine-made. |
Writing
Editorial rules distilled from a real editor's rulings. Every rule below exists because a shipped draft failed without it. The bar: a smart reader outside the domain gets it on first read, and nothing reads as AI-made.
Applies to prose only. Code, API names, error strings, quoted artifacts, and attributed quotes are never reworded.
Project voice
Before drafting for a repo, check for .claude/reference/voice.md (or whatever file that repo's CLAUDE.md indexes as its voice/style reference). If present, it records the owner's deliberate voice for that repo's copy: apply it on top of these rules and let it win where they conflict. These editorial rules are the floor; a project voice file is the owner overriding them on purpose. The em-dash ban still holds regardless.
Before drafting
Settle these silently first, do not narrate them: who reads this; what they should understand, decide, or do; what the prompt is really asking (a question about a challenge may want judgment or fit, not the chronology); the hard constraints (length, format, required points); and which facts or examples carry the answer. Lead with that best material.
Hard bans
- Em dashes (U+2014), anywhere. No en-dash or double-hyphen stand-ins. Use a period, comma, colon, or parentheses; a middle dot (U+00B7) for label-style separators. Reads as an AI tell.
- Trailing periods on headings (h1-h6, section titles, kickers, figure titles). Periods never appear in large display text at all.
- Negation pivots, every disguise. "Not just X, it's Y", "The point isn't X. It's Y", "This isn't about A; it's about B", "less about X than Y". Splitting across sentences doesn't cure it. Delete the denial half, open with the point. A negation survives only when it corrects a real misconception the reader holds, after the positive claim.
- Negative-definition headings ("Synthesis, not summary"). Say what it is.
- Death metaphors ("die", "dies", "killed") for removal or cuts. Say the specific verb: words are cut, a model is retired, a project is cancelled, a file is gone.
- Invented coinages and insider jargon. "Deliberation dial", "colophon", "the harness". Test: would a smart reader outside the domain have to ask? Replace with the plain phrase ("how hard the model thinks"). A term of art genuinely owned by the reader is fine, glossed at first use.
- "Why this matters" sections or labels. Stakes live inside the prose (the afternoon lost, the tokens burned), never under a label.
- AI tells: delve, robust, seamless, crucial, pivotal, testament, showcase, foster, leverage, utilize, vibrant, tapestry, landscape (abstract); "serves as" / "stands as" copula dodges; rule-of-three lists; "from X to Y" fake ranges; Title Case Headings; trailing summaries; "experts say" vague attribution; sycophantic openers and "hope this helps" closers.
Rules
- Lead with the point. If a paragraph's payoff sentence could open it, move it up and cut the wind-up. Answer early; background only when truly needed.
- Titles are plain and specific. A reader who has not opened the piece can say what it is about from the title alone. Evocative only on top of specific ("Thinking on a budget" works; "The firmament moved" decodes to nothing). Descriptions are concrete promises, not atmosphere.
- Plain words beat fancy ones. Latinate dress-ups (prohibition, subsequent, corroborated, verbatim, ancillary, facilitate, commence, myriad) lose to the everyday phrase. Precision beats plainness only when they genuinely conflict; never swap an accurate technical name for a vaguer word.
- No walls of text. Paragraphs run 1-4 sentences; past ~60 words a paragraph needs a reason. Break at each new idea; let lists and white space carry structure.
- State the rule, skip the flourish. Cut aphorism capstones ("The cheapest token is the one never written"), dramatic justifications of self-evident rules, praise of the writing's own advice, and coined names nobody needs. Rules read as flat plain declaratives.
- Don't tour the mechanism. When a thing has levels or stages, say it has them and what the end state buys; walk the stops only when the reader must choose one. One example per claim, and only if the claim is unclear without it.
- Stranger test. Read each sentence as someone with zero domain context. Words with a domain and an everyday meaning ("fine", "weight", "bleed") default to the everyday one in the stranger's head. Fix by describing the observable thing, then stating what it means: "Thicker lines mean more models agreed" beats "Line weight marks agreement". Don't add a legend to rescue a term; replace the term with what the reader sees.
- Name the thing before any framing. "We use a skill called caveman for this" beats "The contract we actually run is...". Plain subject and verb first, conceptual label after, if at all.
- Self-contained passages. If a paragraph only lands for someone who has seen the artifact it references, show the artifact or cut the passage.
- Word-tic sweep. A word repeated across a draft ("true" 8 times, "real" 3) means the prose is orbiting an abstraction. Rewrite the leaning sentences into concrete statements.
- Never talk down. No framing that explains the reader to themselves ("adults learn what they can use").
- Earn every claim. Concrete detail beats self-description; never say passionate or innovative, show what it looks like. Never invent details, numbers, or sources: invented specificity is worse than vague prose.
Review pass
On the finished draft, in order:
- Search for em dashes and double-hyphen stand-ins; replace every one.
- Strip trailing periods from headings.
- Hunt negation pivots, including split-sentence forms.
- Jargon and fancy-word sweep: every term either glossed, owned by the reader, or replaced.
- Paragraph length: split or cut anything past 4 sentences.
- Flourish hunt: for each paragraph ask "which sentence is performing rather than informing" and delete it.
- Stranger-test captions, labels, and any sentence with a double-reading word.
- Count repeats of abstract nouns and adjectives; rewrite the sentences that lean on them.
- Title check: does it say what the reader gets, unopened?
Verdict
Close every review with a verdict, no exceptions:
- PASS: nothing in Hard bans or Rules is still violated.
- FAIL: at least one violation remains. Name each one and the rule it breaks.
Then label every remaining note:
- Requirement: fixes a Hard bans or Rules violation. The draft does not ship until applied. Any open requirement means the verdict is FAIL.
- Suggestion: optional improvement (tighter phrasing, alternative title, tone tweak). The draft can ship without it.
Never leave a note unlabeled, and never end the review without the PASS/FAIL line.
Anti-patterns
- Don't trade one tell for another (em dashes -> semicolon storms, fancy word -> sidegrade synonym).
- Don't reword quoted artifacts, attributed quotes, code, or error strings.
- Don't sanitize a distinctive voice into bland professional prose.
- Don't apply to commit subjects, code comments, or short chat replies.
