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 gpdir16/tabyAgent --skill k-schoolgit clone --depth 1 https://github.com/gpdir16/tabyAgentWrote 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/gpdir16/tabyagent/k-school)<a href="https://agentmods.dev/skills/gpdir16/tabyagent/k-school"><img src="https://agentmods.dev/badge/skills/gpdir16/tabyagent/k-school/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/gpdir16/tabyagent/k-school"><img src="https://agentmods.dev/badge/skills/gpdir16/tabyagent/k-school.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 | $0.00066 | $0.01324 |
| Opus 5.5 | $0.00026 | $0.00530 |
| Sonnet 5.5 | $0.00013 | $0.00265 |
| Haiku 4.5 | $0.00007 | $0.00132 |
Grade A, and why
k-school 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 18d 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
Licensed AGPL-3.0
The repository is licensed AGPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.
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.
- 18d ago Changed 9786345ea421
- 2mo ago First seen · 102 lines · 66 tokens per session scan A b189bb8e3098
k-school is a skill published in the GitHub repository gpdir16/tabyAgent (18 stars, last pushed 19d ago), licensed AGPL-3.0. It adds 66 tokens to every session and 1,324 once invoked, about $0.0003 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
computer-use
Read and drive native desktop apps through the accessibility layer — list apps, snapshot a window as a numbered element tree, then click/type/scroll/drag by element index or screen coordinates. Use for a desktop app, not a web page. macOS + Windows; off unless enabled in Settings.
feature-demo-recording
Record a demo video of a web feature from a real browser. Two modes -- a NARRATED film where measured voiceover drives the timeline (designed slides, subtitles, punch-in camera, rendered from an HTML timeline), and a SILENT evidence clip for a PR or a QA pass. Use when the user asks to record a video, demo, or screen…
browser-recording
Record a browser flow as video/GIF evidence for animations, transitions and multi-step interactions a still screenshot cannot prove. Uses the project's Playwright via a bundled runner, then ffmpeg to mp4 + GIF. Use when asked to record a demo or GIF, or when a UI change involves motion.
web-verify
Use after a user-visible UI edit to verify your OWN change on an isolated loopback server. Capture, read and show real screenshots. Backends: the browser MCP tool (live in chat; origin must be listed), agent-browser (pixel diff, a11y), or scripted Playwright. Not web-preview or web-browse.
web-preview
Emit a hidden preview marker so the right-panel Preview tab opens a Load-preview card for a local server URL (local only; the agent does not drive it). Use whenever you start a dev or static server the user should see (Vite, Next, npm run dev, python -m http.server, etc.).
browser-automation
Drive the PenguinHarness agent browser — the desktop app's built-in browser or the user's own Chrome — from the shell with penguin browser: open pages, read them as simplified HTML or text, act with JavaScript and trusted clicks and typing, and pull structured data out of them (orders, search results, tables), signed…