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 pi-sloane/claude-plugin --skill security-design-reviewgit clone --depth 1 https://github.com/pi-sloane/claude-pluginWrote 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/pi-sloane/claude-plugin/security-design-review)<a href="https://agentmods.dev/skills/pi-sloane/claude-plugin/security-design-review"><img src="https://agentmods.dev/badge/skills/pi-sloane/claude-plugin/security-design-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/pi-sloane/claude-plugin/security-design-review"><img src="https://agentmods.dev/badge/skills/pi-sloane/claude-plugin/security-design-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 | $0.00039 | $0.00458 |
| Opus 5 | $0.00019 | $0.00229 |
| Sonnet 5 | $0.00008 | $0.00092 |
| Haiku 4.5 | $0.00004 | $0.00046 |
Grade A, and why
security-design-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 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.
What it actually says
Start a Pi design review
Use this skill only when the user explicitly asks to start a Pi Security design review of a design document.
Tools
Both are state-changing and require confirmation:
pi_design_review_url_create- starts a design review for a supported Confluence or Notion document URL (url, http/https only).pi_design_review_markdown_create- starts a design review from inline Markdown design-document content (content, up to 5 MiB).
Accepted inputs
- A Confluence or Notion document URL, or
- Design-document content provided inline as Markdown or plain text in the conversation.
Rejected inputs
Do not accept, convert, or promote any of the following into a design-review call:
- Local file paths or
file://URIs - Chat attachments
- PDFs, DOCX files, images, or any binary content
- URLs other than supported Confluence or Notion document URLs
If the user offers one of these, explain that this workflow takes a supported Confluence/Notion URL or inline Markdown, and that other document types are handled in the Pi web app.
Before calling either tool
- Validate the input: a well-formed https Confluence/Notion document URL, or non-empty inline Markdown.
- Show the user exactly what will be submitted: the URL, or the document title plus approximate length for inline Markdown.
- Explain the effect: Pi will start a design review of this document in the authenticated tenant.
- Ask for confirmation and proceed only on an explicit yes in the current turn.
- Call the tool once.
- Report exactly what Pi returned: if the review started, give its status and review ID; otherwise report the returned status as-is. Started or queued means the review is in progress, not finished. Never invent results or completion.
- If the call fails or times out ambiguously, report that and stop. Do not retry automatically, since a retry could start a duplicate review.
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 · 42 lines · 39 tokens per session scan A a01fc87356f2
security-design-review is a skill published in the GitHub repository pi-sloane/claude-plugin (12 stars, last pushed 13d ago), licensed MIT. It adds 39 tokens to every session and 458 once invoked, about $0.0002 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.
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