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 leeguooooo/prompt-language-coach --skill language-reviewgit clone --depth 1 https://github.com/leeguooooo/prompt-language-coachWrote 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/leeguooooo/prompt-language-coach/language-review)<a href="https://agentmods.dev/skills/leeguooooo/prompt-language-coach/language-review"><img src="https://agentmods.dev/badge/skills/leeguooooo/prompt-language-coach/language-review/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/leeguooooo/prompt-language-coach/language-review"><img src="https://agentmods.dev/badge/skills/leeguooooo/prompt-language-coach/language-review.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00046 | $0.00565 |
| Opus 5.5 | $0.00018 | $0.00226 |
| Sonnet 5.5 | $0.00009 | $0.00113 |
| Haiku 4.5 | $0.00005 | $0.00056 |
Grade A, and why
language-review 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 1mo 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.
The source is not reproduced here
No licence file
A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.
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.
- 1mo ago First seen · 69 lines · 46 tokens per session scan A a3910444987c
language-review is a skill published in the GitHub repository leeguooooo/prompt-language-coach (16 stars, last pushed 6mo ago), with no licence file. It adds 46 tokens to every session and 565 once invoked, about $0.0002 per session on Opus 5.5. 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
learning-and-development
Builds capability — skills gaps, career frameworks, training that transfers to the job, and internal mobility. Use this to design a career ladder, close a capability gap, decide whether to build or hire a skill, structure onboarding into a role, or work out why training keeps failing to change anything.
english-coaching
Use when responding to any user message in a Claude Code session running the nativish plugin — for non-native English speakers who want inline grammar and spelling feedback alongside every reply.
quiz-me
Quiz the user on root cause and intended fix BEFORE writing any non-trivial code, then verify comprehension of every change after. Use when the user asks for a bug fix, refactor, or feature and wants to stay technically sharp instead of vibe-coding. Also use when the user says "quiz me", "don't let me vibe code", or…
english-exam-coach
English exam preparation for IELTS (Academic and General Training), TOEFL iBT (2026 format) and Cambridge B1 Preliminary, B2 First, C1 Advanced and C2 Proficiency. Use when someone wants to practise or get feedback on exam writing or speaking, drill reading, use of English, listening or vocabulary, find their CEFR…
Ask a Senior
A senior engineer who refuses badly-formed questions and gives hints, never code. Use when the user runs /ask-a-senior, or asks to turn on senior mode.
oral-english-practice
A Claude Code skill that stores and analyses spoken-English practice completed in the Claude app. The app handles the conversation; this skill keeps reports, scores, mistakes, progress trends, and the next practice focus.