oh-my-posh is a customizable prompt theme engine that renders command-line prompts across shells and platforms. Developers and terminal users use it to configure primary, secondary, right, and transient prompts in shells such as PowerShell, zsh, Bash, and cmd. The catalogue entries provide skills, instructions, agents, and an MCP integration for working with oh-my-posh.
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.
npx skills add JanDeDobbeleer/oh-my-posh --skill writing-clearly-and-conciselygit clone --depth 1 https://github.com/JanDeDobbeleer/oh-my-poshWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/jandedobbeleer/oh-my-posh/writing-clearly-and-concisely)<a href="https://agentmods.dev/skills/jandedobbeleer/oh-my-posh/writing-clearly-and-concisely"><img src="https://agentmods.dev/badge/skills/jandedobbeleer/oh-my-posh/writing-clearly-and-concisely/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/jandedobbeleer/oh-my-posh/writing-clearly-and-concisely"><img src="https://agentmods.dev/badge/skills/jandedobbeleer/oh-my-posh/writing-clearly-and-concisely.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00055 | $0.00908 |
| Opus 5 | $0.00028 | $0.00454 |
| Sonnet 5 | $0.00011 | $0.00182 |
| Haiku 4.5 | $0.00006 | $0.00091 |
Grade A, and why
writing-clearly-and-concisely 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 12d 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.
How it starts
The opening of the file, as written. The whole thing — 102 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Writing Clearly and Concisely
Overview
Write with clarity and force. This skill covers what to do (Strunk) and what not to do (AI patterns).
When to Use This Skill
Use this skill whenever you write content a human will read:
- Emails, messages, and any direct communication
- Documents, reports, summaries, proposals
- Documentation, README files, technical explanations
- Commit messages, pull request descriptions
- Error messages, UI copy, help text, comments
- Any other prose meant for human eyes
If a human will read it, this skill applies — no exceptions.
Limited Context Strategy
When context is tight:
- Write your draft using judgment
- Dispatch a subagent with your draft and the relevant section file
- Have the subagent copyedit and return the revision
Loading a single section (~1,000-4,500 tokens) instead of everything saves significant context.
Elements of Style
William Strunk Jr.'s The Elements of Style (1918) teaches you to write clearly and cut ruthlessly.
Rules
Elementary Rules of Usage (Grammar/Punctuation):
- Form possessive singular by adding 's
- Use comma after each term in series except last
- Enclose parenthetic expressions between commas
- Comma before conjunction introducing co-ordinate clause
- Don't join independent clauses by comma
- Don't break sentences in two
- Participial phrase at beginning refers to grammatical subject
Elementary Principles of Composition:
- One paragraph per topic
- Begin paragraph with topic sentence
- Use active voice
- Put statements in positive form
- Use definite, specific, concrete language
- Omit needless words
- Avoid succession of loose sentences
- Express co-ordinate ideas in similar form
- Keep related words together
- Keep to one tense in summaries
- Place emphatic words at end of sentence
Reference Files
The rules above are summarized from Strunk's original text. For complete explanations with examples:
| Section | File | ~Tokens |
|---|---|---|
| Grammar, punctuation, comma rules | 02-elementary-rules-of-usage.md |
2,500 |
| Paragraph structure, active voice, concision | 03-elementary-principles-of-composition.md |
4,500 |
| Headings, quotations, formatting | 04-a-few-matters-of-form.md |
1,000 |
| Word choice, common errors | 05-words-and-expressions-commonly-misused.md |
4,000 |
What ships with it
7 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
- elements-of-style/01-introductory.md 302 B
- elements-of-style/02-elementary-rules-of-usage.md 12 KB
- elements-of-style/03-elementary-principles-of-composition.md 34 KB
- elements-of-style/04-a-few-matters-of-form.md 4.8 KB
- elements-of-style/05-words-and-expressions-commonly-misused.md 24 KB
- README.md 6.3 KB
- signs-of-ai-writing.md 91 KB
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.
- 12d ago First seen · 102 lines · 55 tokens per session scan A 0cc10a76b436
writing-clearly-and-concisely is a skill published in the GitHub repository JanDeDobbeleer/oh-my-posh (23,447 stars, last pushed yesterday), licensed MIT. It adds 55 tokens to every session and 908 once invoked, about $0.0003 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.
Other skills, from other repositories
verify-behavior
Verify or reproduce visible product behavior by driving the real UI with pi-computer-use's checked tools, requiring verified expect postconditions and durable state evidence for meaningful UI flows. Use when triage needs visual reproduction, implementation needs behavioral proof, review needs interactive confirmation…
release-sync
PromptHub release update skill. Use for /update-readme, version bumps, changelog updates, website sync, GUI screenshot/doc refresh, and multilingual release/documentation alignment.
ui-visual-regression
Automates visual regression testing for DB Console UI changes. Compares screenshots and network requests between the current branch and its merge base using roachprod, playwright-cli, and ImageMagick. Use when the user wants to verify UI changes haven't introduced visual or behavioral regressions.
gh-skill
Manage agent skills with gh skill. Use this skill to discover, preview, install, update, and publish Agent Skills so an agent can self-manage the skills available in its environment.
x-lsof
Enhanced lsof (List Open Files) with interactive UI and structured output. View open files, network connections, and processes. Dependency: This is an x-cmd module. Install x-cmd first (see x-cmd skill for installation options). see x-cmd skill for installation.
csv
CSV data processing — view, filter, convert, merge tabular data. Zero barrier — use with x-cmd, Python, or awk. Use for "csv", "data", "table", "spreadsheet", "conversion".