sharp-writing

A writing guide for producing concise, clear prose and Markdown for people and coding agents.

In plain words
What is it for?
It is for writing or editing documentation, README files, instructions, agent skills, and other prose text.
Why use it?
It helps remove filler, repetition, vague wording, and unnecessary complexity from written instructions and documentation.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/paleo/alignfirst/sharp-writing
Any agent
npx skills add paleo/alignfirst --skill sharp-writing
Clone the repo
git clone --depth 1 https://github.com/paleo/alignfirst

Made for: Claude Code, Codex.

Per session 42 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 837 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00042 $0.00837
Opus 5 $0.00021 $0.00418
Sonnet 5 $0.00008 $0.00167
Haiku 4.5 $0.00004 $0.00084

Measured 2d ago against content hash b792052f9b21, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

sharp-writing scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.agents/skills/sharp-writing/SKILL.md · 91 lines

How it starts

The opening of the file, as written. The whole thing — 91 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Sharp Writing

Write sharp text: every word counts. These rules cover all prose and Markdown.

Find the essence first

Before writing anything, find the essence of the idea. State the essence. State it well.

Principles

  • Sharp, precise, concise. Straight to the point. The less, the better.
  • Easy language. Keep sentences short and clear.
  • Don't pad. No bloated orders, no filler.
  • Respect the reader. No insistent or authoritarian tone; don't treat them like a child. Make what is important more obvious instead.
  • Keep a formal register.

Weigh every word

Pick the word that says exactly what you mean. Prefer the common word; use an elaborate or technical one only when it is more precise.

Keep a formal register

Stay professional, without stiffness. Write complete sentences; don't clip the opening. No slang, no casual jargon, no emoticons.

Structure text like code

Good text is like good code:

  • Avoid repeating or duplicating.
  • Refactor text as you refactor code, so every idea is well-organized and clear.

One idea, one sentence. One concern, one paragraph. When a concern needs several paragraphs, give it a section title; split a complex idea into sub-ideas the same way. Never pack several ideas into one sentence, or several concerns into one paragraph. A sentence that chains clauses with colons and dashes is packing — split it.

Show the direct path, not your detours. Writing is like climbing an uncharted mountain: you wander and backtrack to find the way, then from the summit you see the straight route. Write that route. Readers want the direct path, not the search that found it.

Prefer positive phrasing

Say what is, not what is not. A negation forces the reader to invert; a double negation forces two inversions.

Cut the negated echo

A common reflex: affirm, then restate the same idea negated — "X is A, not B", where B is merely the absence of A. Cut the negated half.

Stop at the last fact

End when the information ends. Don't close with a sentence that restates the point, draws a moral, or justifies what you just wrote. Before keeping a final sentence, check it carries a new fact or instruction. If it only emphasizes, concludes, or reassures, cut it.

Read the full file on GitHub · 91 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2d ago First seen · 91 lines · 42 tokens per session scan A b792052f9b21

Subscribe to this mod's changes

sharp-writing is a skill published in the GitHub repository paleo/alignfirst (85 stars, last pushed 3d ago), licensed CC0-1.0. It adds 42 tokens to every session and 837 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.