Agent skill

Eos Composition

by neurofoo in neurofoo/agent-skills

Strunk & White composition review using the 11 principles from "Elements of Style" Chapter II.

MITAuto-check passed

Install Eos Composition

skills CLI
$ npx skills add neurofoo/agent-skills --skill eos-composition -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install neurofoo/agent-skills eos-composition --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/neurofoo/agent-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/eos-composition .claude/skills/eos-composition && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
eos-composition
GitHub stars
119
Token cost
~1.3k tokens
SKILL.md length
641 words
Files
1
Skills in repo
22
Repo updated
First seen
Licence
MIT

At a glance

Strunk & White composition review using the 11 principles from "Elements of Style" Chapter II.

  • Works in 11 steps: Choose a suitable design and stick to it… → Make the paragraph the unit of… → Use the active voice — "The active voice… → …
  • Analyzing structure
  • SKILL.md covers Instructions, Composition Review, Detailed Findings and Principle Reference, plus 2 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Eos Composition is an agent skill from neurofoo/agent-skills. Strunk & White composition review using the 11 principles from "Elements of Style" Chapter II. Use when analyzing structure, improving flow, or tightening prose.

Its SKILL.md is about 1.3k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

The repository describes itself as: Agent Skills for Claude Code and OpenCode. The licence is MIT.

When your agent uses it

  • Analyzing structure
  • Tightening prose

Example prompts

  • “Elements of Style”
  • “/eos-composition”

Workflow steps

11 steps, taken from the first numbered list in SKILL.md.

  1. Choose a suitable design and stick to it — Plan your structure. Know whether you're building a tent or a cathedral. The design may change…
  2. Make the paragraph the unit of composition — Each paragraph should develop one topic. Begin with a topic sentence; end with emphasis…
  3. Use the active voice — "The active voice is usually more direct and vigorous than the passive." Write "I shall always remember my first…
  4. Put statements in positive form — Say what is, not what isn't. "He usually came late" is stronger than "He was not very often on time."…
  5. Use definite, specific, concrete language — Prefer the specific to the general, the definite to the vague, the concrete to the abstract…
  6. Omit needless words — "Vigorous writing is concise." Every word should tell. Common offenders
  7. Avoid a succession of loose sentences — Don't string together clauses with "and," "but," "so." Vary sentence structure. Use subordination.
  8. Express coordinate ideas in parallel form — Similar content deserves similar form. "The French, the Italians, Spanish, and Portuguese" →…
  9. Keep related words together — Place modifiers near what they modify. "He only found two mistakes" → "He found only two mistakes."
  10. In summaries, keep to one tense — When summarizing a work, use present tense throughout. Don't shift between present and past.
  11. Place the emphatic words at the end — The end of a sentence is its most prominent position. Build toward the key word. "Humanity has…

What it can do on your machine

Read from SKILL.md and the folder at commit 0e7ac2a. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Eos Composition loads about 1.3k tokens when it runs. Until then it costs about 44 tokens; SKILL.md has 641 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~44
When it runs · the whole SKILL.md, loaded when a task matches
~1.3k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from neurofoo/agent-skills at commit 0e7ac2a, republished under its MIT licence (© neurofoo). 641 words, ~1,274 tokens.

Download SKILL.mdSave it as .claude/skills/eos-composition/SKILL.md (or your agent's skills folder).
name
eos-composition
description
Strunk & White composition review using the 11 principles from "Elements of Style" Chapter II. Use when analyzing structure, improving flow, or tightening prose.
user-invocable
true

Elements of Style: 11 Composition Principles

Review writing against Strunk & White's 11 elementary principles of composition from Chapter II.

Instructions

Analyze the provided text for structural and compositional issues. Provide specific examples with before/after suggestions where improvements are needed.

Output Format

Text Under Review: [title or brief description]


Composition Review

#PrincipleStatusNotes
1Choose a suitable design and stick to itPass/Needs Work/N/A[feedback]
2Make the paragraph the unit of compositionPass/Needs Work/N/A[feedback]
3Use the active voicePass/Needs Work/N/A[feedback]
4Put statements in positive formPass/Needs Work/N/A[feedback]
5Use definite, specific, concrete languagePass/Needs Work/N/A[feedback]
6Omit needless wordsPass/Needs Work/N/A[feedback]
7Avoid a succession of loose sentencesPass/Needs Work/N/A[feedback]
8Express coordinate ideas in parallel formPass/Needs Work/N/A[feedback]
9Keep related words togetherPass/Needs Work/N/A[feedback]
10In summaries, keep to one tensePass/Needs Work/N/A[feedback]
11Place the emphatic words at the endPass/Needs Work/N/A[feedback]

Detailed Findings

Principle 3: Active Voice

Passive voice found:

OriginalSuggested
[passive construction][active alternative]
Principle 4: Positive Form

Negative constructions found:

OriginalSuggested
"He was not very often on time""He usually arrived late"
Principle 6: Omit Needless Words

Wordy phrases found:

OriginalSuggested
"the reason why is that""because"
"in spite of the fact that""although"
"the fact that he had arrived""his arrival"
Principle 8: Parallel Form

Non-parallel constructions:

OriginalSuggested
[non-parallel][parallel version]

Principle Reference

  1. Choose a suitable design and stick to it — Plan your structure. Know whether you're building a tent or a cathedral. The design may change, but have one.

  2. Make the paragraph the unit of composition — Each paragraph should develop one topic. Begin with a topic sentence; end with emphasis. Don't chop into single sentences or let paragraphs run too long.

  3. Use the active voice — "The active voice is usually more direct and vigorous than the passive." Write "I shall always remember my first visit" not "My first visit will always be remembered by me."

  4. Put statements in positive form — Say what is, not what isn't. "He usually came late" is stronger than "He was not very often on time." Avoid not un- constructions.

  5. Use definite, specific, concrete language — Prefer the specific to the general, the definite to the vague, the concrete to the abstract. "A period of unfavorable weather set in" → "It rained every day for a week."

  6. Omit needless words — "Vigorous writing is concise." Every word should tell. Common offenders:

    • "the question as to whether" → "whether"
    • "there is no doubt but that" → "no doubt" / "doubtless"
    • "the fact that" → often deletable
    • "who is" / "which was" → often deletable
  7. Avoid a succession of loose sentences — Don't string together clauses with "and," "but," "so." Vary sentence structure. Use subordination.

  8. Express coordinate ideas in parallel form — Similar content deserves similar form. "The French, the Italians, Spanish, and Portuguese" → "The French, the Italians, the Spanish, and the Portuguese."

  9. Keep related words together — Place modifiers near what they modify. "He only found two mistakes" → "He found only two mistakes."

  10. In summaries, keep to one tense — When summarizing a work, use present tense throughout. Don't shift between present and past.

  11. Place the emphatic words at the end — The end of a sentence is its most prominent position. Build toward the key word. "Humanity has hardly advanced in fortitude since that time, though it has advanced in many other ways" → weak ending. Revise for emphasis.

Show full SKILL.md (67 more words)Show less

Summary

Overall Structure: [Well-organized/Needs Work/Disorganized]

Word Economy: [Tight/Some bloat/Verbose]

Top 3 Improvements:

  1. [Most impactful structural change]
  2. [Second priority]
  3. [Third priority]

Guidelines

  • Focus on patterns rather than isolated instances
  • Active voice isn't always better—passive is appropriate when the actor is unknown or unimportant
  • "Omit needless words" doesn't mean "omit all words"—rhythm and clarity sometimes need extra words
  • Technical writing may legitimately need longer explanations

$ARGUMENTS

© neurofoo, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in eos-composition of neurofoo/agent-skills.

Open the folder on GitHubat commit 0e7ac2a

Compare with similar skills

Eos Composition next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Eos Composition compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Eos Composition this skillneurofoo/agent-skills119—~1.3kAutomated safety check: PassMIT
Principle Redesign From First Principlescursor/plugins10k8 repos~211Automated safety check: PassNone
Decorative Elementsthedaviddias/Front-End-Checklist74k—~672Automated safety check: PassMIT
Scaffold Elementremotion-dev/remotion62k—~202Automated safety check: PassCustom licence
Composition Patternssickn33/agentic-awesome-skills47k1 repos~742Automated safety check: PassMIT
Uxui Principlessickn33/agentic-awesome-skills47k2 repos~548Automated safety check: PassMIT

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Questions about Eos Composition

What does Eos Composition do?

Strunk & White composition review using the 11 principles from "Elements of Style" Chapter II. Eos Composition is an agent skill from neurofoo/agent-skills. Strunk & White composition review using the 11 principles from "Elements of Style" Chapter II.

When should I use Eos Composition?

Eos Composition fits situations like: analyzing structure; tightening prose.

How do I install Eos Composition in Claude Code?

Run `npx skills add neurofoo/agent-skills --skill eos-composition -a claude-code`. Or copy the skill folder (eos-composition in neurofoo/agent-skills) into .claude/skills/eos-composition in your project. Claude Code loads it when a task matches its description.

How do I install Eos Composition in Codex?

Run `npx skills add neurofoo/agent-skills --skill eos-composition -a codex`. Or copy the skill folder (eos-composition in neurofoo/agent-skills) into .agents/skills/eos-composition in your project. Codex loads it when a task matches its description.

Can I use Eos Composition in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add neurofoo/agent-skills --skill eos-composition -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/eos-composition, .gemini/skills/eos-composition, .github/skills/eos-composition and .opencode/skills/eos-composition in your project.

What does Eos Composition need to run?

SKILL.md names no scripts, command-line tools or credentials: Eos Composition is instructions for the agent only.

Does Eos Composition access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Eos Composition safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Eos Composition use?

Eos Composition is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Eos Composition use?

About 1.3k tokens (SKILL.md is roughly 5.1k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Eos Composition?

Skills that share tags, products or a category with Eos Composition: Principle Redesign From First Principles (cursor/plugins, 10k stars), Decorative Elements (thedaviddias/Front-End-Checklist, 74k stars), Scaffold Element (remotion-dev/remotion, 62k stars) and Composition Patterns (sickn33/agentic-awesome-skills, 47k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Eos Composition?

neurofoo (a GitHub user) maintains it in neurofoo/agent-skills, which has 119 GitHub stars. The repository holds 22 skills in this directory. The repository was last updated on January 19, 2026.

Source: neurofoo/agent-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.