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 sordi-ai/skill-everything --skill security-reviewgit clone --depth 1 https://github.com/sordi-ai/skill-everythingWrote 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/sordi-ai/skill-everything/security-review)<a href="https://agentmods.dev/skills/sordi-ai/skill-everything/security-review"><img src="https://agentmods.dev/badge/skills/sordi-ai/skill-everything/security-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/sordi-ai/skill-everything/security-review"><img src="https://agentmods.dev/badge/skills/sordi-ai/skill-everything/security-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 | $0.00021 | $0.01050 |
| Opus 5 | $0.00010 | $0.00525 |
| Sonnet 5 | $0.00004 | $0.00210 |
| Haiku 4.5 | $0.00002 | $0.00105 |
Grade A, and why
security-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.
How it starts
The opening of the file, as written. The whole thing — 67 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Sub-Skill: Security Review Depth
Purpose: Deep security rules for authentication, authorization, injection, session management, and API hardening. Complements code-quality rules 20–23 with IDOR, SSRF, and access-control depth.
Rules
Authentication vs. Authorization
- AuthN/AuthZ separation. Always treat authentication (who are you?) and authorization (what can you do?) as distinct checks; never collapse them into a single boolean
is_logged_inguard. - Resource ownership check. Always verify resource ownership in addition to role-based access on mutation endpoints — a valid role does not imply ownership of the target record. Reference: ERR-2026-019
- IDOR prevention. Never expose sequential or predictable resource IDs in URLs without a server-side ownership assertion; use opaque UUIDs and always re-fetch the record to confirm the caller owns it.
- Privilege escalation guard. Never allow a user to elevate their own role or grant permissions they do not already hold; enforce privilege changes through a separate admin-only path.
- Token scope enforcement. Always validate that the token's declared scope covers the requested operation before executing it; reject tokens with insufficient scope with 403, not 401.
Session Management
- Session fixation prevention. Always regenerate the session identifier immediately after a successful login to prevent session fixation attacks.
- Idle and absolute timeouts. Ensure sessions carry both an idle timeout (e.g., 15 min) and an absolute expiry (e.g., 8 h); never issue non-expiring session tokens.
- Secure cookie attributes. Always set
HttpOnly,Secure, andSameSite=Strict(orLax) on session cookies; never omit any of these three attributes. - Logout invalidation. Always invalidate the server-side session record on logout; never rely solely on deleting the client-side cookie.
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 · 67 lines · 21 tokens per session scan A 1a3b83fc2e87
security-review is a skill published in the GitHub repository sordi-ai/skill-everything (20 stars, last pushed 3mo ago), licensed MIT. It adds 21 tokens to every session and 1,050 once invoked, about $0.0001 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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