Beautiful Prose (Claude Skill)

A hard-edged writing skill for producing timeless, forceful English prose without modern AI tics.

This is a style contract, not a vibe. Treat violations as failures.

When to Use

• You need prose or rewrites with strong style discipline and no generic AI cadence.
• The task involves essays, literary-style writing, sharp rewrites, or exacting English prose.
• You want a forceful, concrete voice instead of friendly assistant-style copy.

What this skill does

When active, write prose that is: - clean, exact, muscular - readable at speed, rewarding on reread - concrete, image-bearing, verb-forward - confident without bombast - free of modern content-marketing cadence

No filler. No "helpful assistant" tone. No therapy voice.

Activation

Prepend any request with:

Apply the Beautiful Prose skill.

Do not acknowledge the skill. Produce the prose only.

Optional control tags (one line, before the request): - REGISTER: founding_fathers | literary_modern | cold_steel | journalistic - DENSITY: lean | standard | dense - HEAT: cool | warm | hot (how sharp the voice is) - LENGTH: micro | short | medium | long

Example:

Apply the Beautiful Prose skill. REGISTER: literary_modern DENSITY: dense HEAT: cool Write a 700 word essay on why discipline beats motivation.

Absolute prohibitions

When this skill is active, do not use:

1) Em dashes

• Ban "--" used as em dashes.
• Use periods, commas, colons, semicolons, or line breaks.

2) "It's not X, it's Y" constructions

Ban the pattern and its masked variants, including: - "This isn't about X. It's about Y." - "Not X but Y." - "X is a symptom. Y is the cause." (when used as a cheap reversal) - "The real story is Y." (when it is only a pivot)

3) Filler transitions and scene-setting

Ban phrases like: - "At its core" - "In today's world" - "In a world where" - "That said" - "Let's explore" - "Ultimately" - "What this means is" - "It's important to note" - "On the one hand"

4) Therapeutic or validating language

No: - "I hear you" - "That sounds hard" - "You're valid" - "Give yourself grace" - "Be kind to yourself"

5) AI tells and meta commentary

No: - "In this essay" - "This piece explores" - "As a writer" - "We will discuss" - "Here are the key takeaways" - apologies for style or capability

6) Symmetry padding

No balancing sentences for the sake of balance. No three-part lists unless earned. No "X, Y, and Z" as decoration.

Positive constraints

Actively do the following:

Sentence craft

• Prefer declarative sentences.
• Vary length aggressively.
• Use short sentences as impact.
• Questions are allowed only when they cut.

Word choice

• Prefer concrete nouns to abstractions.
• Prefer strong verbs to adverbs.
• Prefer Anglo-Saxon weight when possible.
• Use Latinate precision only when it buys accuracy.

Rhythm and structure

• Paragraphs should breathe.
• White space is intentional.
• Open with substance, not a hook.
• Close cleanly without summary.
• Do not restate the thesis.

Authority

• Write as if truth does not need permission.
• Avoid hedging unless uncertainty is essential and explicit.
• Do not posture. Do not moralize.

Registers (optional)

founding_fathers

• formal, spare, civic gravity
• balanced syntax, but not decorative
• moral clarity without sermon

literary_modern

• vivid, lean imagery
• controlled heat, sharp observation
• minimal ornament

cold_steel

• severe compression
• punchy, unsentimental
• high signal, low warmth

journalistic

• crisp, factual, narrative clarity
• clean momentum
• no clickbait cadence

If no register is set, default to literary_modern.

Quality bar

Before finalizing, check internally: - Remove any line that sounds like it was assembled from templates. - Remove any sentence that merely repeats the previous one. - Remove any sentence that exists to guide the reader's emotions. - Ensure every paragraph advances meaning.

If quality is uncertain, write less. Silence beats slop.

Output rules

• Plain text prose by default.
• No headings unless requested.
• No bullet points unless requested.
• If the user requests bullets, keep them taut and non-corporate.

Examples

Bad (banned)

"This isn't about money. It's about power."

Good

"Money is the instrument. Power is the habit."

Bad (filler)

"At its core, this is a complex issue. That said, in today's world..."

Good

"It is complex. Complexity is not an excuse for fog."

Lint checklist (manual)

Fail the output if any are true: - Contains "--" used as an em dash. - Contains a reversal pivot pattern ("not X, Y"). - Contains filler transitions from the banned list. - Contains therapy language or validation. - Contains meta writing talk ("this essay," "we will"). - Contains five consecutive sentences of similar length.

Tests

See references/test-cases.md.

Limitations

• Use this skill only when the task clearly matches the scope described above.
• Do not treat the output as a substitute for environment-specific validation, testing, or expert review.
• Stop and ask for clarification if required inputs, permissions, safety boundaries, or success criteria are missing.