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 Kevin-Liu-01/Agent-Machines --skill deepsecgit clone --depth 1 https://github.com/Kevin-Liu-01/Agent-MachinesWrote 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/kevin-liu-01/agent-machines/deepsec)<a href="https://agentmods.dev/skills/kevin-liu-01/agent-machines/deepsec"><img src="https://agentmods.dev/badge/skills/kevin-liu-01/agent-machines/deepsec/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/kevin-liu-01/agent-machines/deepsec"><img src="https://agentmods.dev/badge/skills/kevin-liu-01/agent-machines/deepsec.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 3 findings, up to high
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- high Privilege Escalation · line 61 Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
- high Excessive Agency · line 157 Skill selects an external model or provider that may use a different account or billing plan than the operator expects. Undisclosed model switches can cause unexpected cost or quota consumption.Fix: Remove the model/provider override or disclose it prominently and require explicit operator approval before invoking an external coding CLI or billed model.
- medium MCP Rug Pull · line 80 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
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 | $0.00132 | $0.02865 |
| Opus 5 | $0.00066 | $0.01432 |
| Sonnet 5 | $0.00026 | $0.00573 |
| Haiku 4.5 | $0.00013 | $0.00286 |
Grade A, and why
deepsec 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 10d 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 — 296 lines — stays where its author put it; the contents beside it link to each section on GitHub.
deepsec — Agent-Powered Vulnerability Scanner
Run vercel-labs/deepsec — Vercel's
open-source security harness — against any local codebase Kevin asks to audit.
deepsec installs into a .deepsec/ directory inside the target repo (checked
into the same git repo so config and matchers travel with the code) and uses
coding agents to investigate security-sensitive files at maximum thinking.
When this fires
- Kevin says "deepsec", "security scan ", "scan for vulns", "find security bugs in ", "audit X for vulnerabilities", or "run a security review on "
- Before shipping a new service or backend to production
- After a CVE drops in a peer/customer codebase
- Customer / open-source repo due diligence (Kevin reviewing partner repos the way Vercel did with dub.co and Unkey)
- Periodic deep audit on Sigil UI, Dedalus monorepo, or any repo Kevin owns
Cost discipline (read this before running anything)
deepsec uses Opus 4.7 / GPT 5.5 at max reasoning. Full scans cost real money:
| Files | Approx cost | Approx wall time |
|---|---|---|
| 100 | $25–60 | 5–15 min |
| 500 | $130–300 | 25–60 min |
| 2,000 | $500–1,200 | 1.5–4 hr |
Iron rule: never run a full process without explicit confirmation from Kevin
of the expected dollar amount. Always start with --limit 50 to calibrate.
For repos > 1,000 files, propose Vercel Sandbox fanout or Codex/GPT 5.5 as a
cheaper backend before suggesting a default Opus run.
Prerequisites
- Node.js 22+ (
node -v) pnpmavailable (deepsec scaffold uses pnpm; npm/yarn work but pnpm is the documented path)- One of:
- Logged-in
claudeCLI subscription (default — non-sandbox runs reuse it) - Logged-in
codexCLI subscription AI_GATEWAY_API_KEY=vck_...(Vercel AI Gateway — covers both Claude and Codex with one token)- Or explicit
ANTHROPIC_AUTH_TOKEN/OPENAI_API_KEY
- Logged-in
If sandbox fanout is needed: a Vercel account with OIDC tokens or access tokens.
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.
- 10d ago First seen · 296 lines · 132 tokens per session scan A 8ac3bc772c73
deepsec is a skill published in the GitHub repository Kevin-Liu-01/Agent-Machines (26 stars, last pushed 9d ago), licensed MIT. It adds 132 tokens to every session and 2,865 once invoked, about $0.0007 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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