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 msradam/theodosia --skill security-auditgit clone --depth 1 https://github.com/msradam/theodosiaWrote 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/msradam/theodosia/security-audit)<a href="https://agentmods.dev/skills/msradam/theodosia/security-audit"><img src="https://agentmods.dev/badge/skills/msradam/theodosia/security-audit.svg" alt="Measured on agentmods" 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 | $0.00250 | $0.07714 |
| Opus 5 | $0.00125 | $0.03857 |
| Sonnet 5 | $0.00050 | $0.01543 |
| Haiku 4.5 | $0.00025 | $0.00771 |
Grade B, and why
security-audit scanned grade B with 3 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 8d 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.
Cloud metadata endpointmediumServer-side request forgery
One request to 169.254.169.254 can return temporary IAM credentials.
| AWS IMDSv1 | `http://169.254.169.254/latest/meta-data/iam/security-credentials/` | none (legacy) | Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
grep -rInE 'urllib\.(request|urlopen)\(|requests\.(get|post)\(.+\+' src/ Runs shell commandslowCapability
Expected in a hook, worth knowing in a rule or an instructions file.
grep -rInE 'child_process\.(exec|execSync)\(|\.spawn\(.+,\s*\{\s*shell' src/ How it starts
The opening of the file, as written. The whole thing — 601 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Web App Security Audit
Find the bugs before attackers do. Works equally well for:
- Your own codebase — defensive audit before you get hacked
- A project you have written authorization to audit — GHSA collaborator, bug-bounty scope, CTF engagement
First — what mode are we in?
digraph context {
"Can I read the target's source?" [shape=diamond];
"Do I also have a live URL?" [shape=diamond];
"INSIDE mode" [shape=doublecircle];
"OUTSIDE mode" [shape=doublecircle];
"BOTH mode (ideal)" [shape=doublecircle];
"Can I read the target's source?" -> "Do I also have a live URL?" [label=yes];
"Can I read the target's source?" -> "OUTSIDE mode" [label=no];
"Do I also have a live URL?" -> "BOTH mode (ideal)" [label="yes, running deployment"];
"Do I also have a live URL?" -> "INSIDE mode" [label="no, code only"];
}
Check signals in this order:
| Signal | Mode |
|---|---|
ls shows package.json / Cargo.toml / go.mod / pyproject.toml / Dockerfile / src/ in cwd |
inside (filesystem access to target) |
| User says "my project", "our codebase", "audit this repo", pastes code | inside |
| User gave only a URL / hostname / API endpoint, no filesystem access | outside (black-box) |
| Filesystem access AND a live URL of the same project | both — most powerful |
| Written scope from the maintainer of a project you don't own | outside or both (check cwd) |
Before probing production from outside, you need authorization in writing. Scope artefact (maintainer DM, GHSA collaborator invite, bounty scope). Without it, stop.
INSIDE mode — source-code audit checklist
Read the code before doing anything else. Every bug found here is free (no prod traffic, no scope questions). Work in this order — cheap first:
1. Dependency CVEs and version pins
# Node
npm audit --production # or pnpm audit, yarn audit
grep -E '"(react|next|express|fastify|better-auth|drizzle)":' package.json
# Python
pip-audit || safety check
# Container
grep -E 'FROM\s+.+:latest|FROM\s+.+:\d' Dockerfile* # :latest is a smell
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 8d ago First seen · 601 lines · 250 tokens per session scan B 5b5d3e6ae71b
security-audit is a skill published in the GitHub repository msradam/theodosia (15 stars, last pushed today), licensed Apache-2.0. It adds 250 tokens to every session and 7,714 once invoked, about $0.0013 per session on Opus 5. A static security scan graded it B with 3 findings (cloud metadata endpoint, makes network calls, runs shell commands). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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