System Prompts Leaks is a collection of captured system instructions used to guide AI chatbots and coding agents before they receive user messages. It serves researchers and developers studying how different AI assistants are directed.
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 asgeirtj/system_prompts_leaks --skill interactive-prototypegit clone --depth 1 https://github.com/asgeirtj/system_prompts_leaksWrote 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/asgeirtj/system_prompts_leaks/interactive-prototype)<a href="https://agentmods.dev/skills/asgeirtj/system_prompts_leaks/interactive-prototype"><img src="https://agentmods.dev/badge/skills/asgeirtj/system_prompts_leaks/interactive-prototype.svg" alt="Measured on agentmods" 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 | $0.00009 | $0.00084 |
| Opus 5 | $0.00005 | $0.00042 |
| Sonnet 5 | $0.00002 | $0.00017 |
| Haiku 4.5 | $0.00001 | $0.00008 |
Grade A, and why
interactive-prototype 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 9d 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.
Copies of this mod
1 near-identical copy found in the catalogue:
- interactive-prototype — 92% identical, 3 lines differ
What it actually says
Interactive prototype
Create a fully interactive prototype with realistic state management and transitions. Use React useState/useEffect for dynamic behavior. Include hover states, click interactions, form validation, animated transitions, and multi-step navigation flows. It should feel like a real working app, not a static mockup.
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.
- 9d ago First seen · 10 lines · 9 tokens per session scan A d42bae684ccb
interactive-prototype is a skill published in the GitHub repository asgeirtj/system_prompts_leaks (64,387 stars, last pushed yesterday), licensed CC0-1.0. It adds 9 tokens to every session and 84 once invoked, about $0.0000 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
claude-design
Design one-off HTML artifacts (landing, deck, prototype).
sketch
Throwaway HTML mockups: 2-3 design variants to compare.
impeccable
Frontend design guidance, upstream-maintained (impeccable).
genui
Render structured, glanceable, interactive UI in the chat instead of plain text — dashboards, stat cards, filterable tables, charts, mermaid diagrams, choice panels, forms, quizzes. Panels can carry an id so later turns update them in place, and most interaction resolves in the browser with no round-trip. Read this…
motion-system
Define the app's motion language before animating anything -- a small set of durations, easings, and named moves that every animation draws from, so the app feels designed instead of decorated. Use before writing the first animation in a project, or when existing motion feels scattered.
polish-pass
The de-AI pass -- audit a vibe-coded app for template smell in design and copy, then fix it with editorial layout, purposeful motion, and human-sounding words. Use after any build session, before anyone else sees it.