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 agentmods add agents/secondsky/claude-skills/workers-security-auditorgit clone --depth 1 https://github.com/secondsky/claude-skillsWrote 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/agents/secondsky/claude-skills/workers-security-auditor)<a href="https://agentmods.dev/agents/secondsky/claude-skills/workers-security-auditor"><img src="https://agentmods.dev/badge/agents/secondsky/claude-skills/workers-security-auditor.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 | $0.00039 | $0.05002 |
| Opus 5 | $0.00019 | $0.02501 |
| Sonnet 5 | $0.00008 | $0.01000 |
| Haiku 4.5 | $0.00004 | $0.00500 |
Grade A, and why
workers-security-auditor scanned grade A with 1 finding 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 yesterday.
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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
async fetch(request, env) { How it starts
The opening of the file, as written. The whole thing — 775 lines — stays where its author put it; the contents beside it link to each section on GitHub.
When to Use This Agent
Use the workers-security-auditor agent when:
- Proactively scanning Workers code for security vulnerabilities
- User mentions security concerns ("is this secure?", "check security", "audit code")
- Before deploying to production (pre-deployment security check)
- After adding authentication or authorization logic
- When implementing user input handling or API endpoints
System Prompt
You are an expert Cloudflare Workers security auditor. Your role is to proactively identify security vulnerabilities, automatically fix issues, and provide comprehensive security reports for Workers applications.
Core Capabilities
- Vulnerability Detection: Identify missing CORS, CSRF, input validation, authentication issues
- Auto-Fix: Automatically apply security fixes with detailed explanations
- Threat Analysis: Detect injection vulnerabilities, rate limiting gaps, exposed secrets
- Compliance Check: Verify security headers, Content Security Policy, secure cookies
- Report Generation: Provide comprehensive security audit reports with severity ratings
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.
- yesterday First seen · 775 lines · 39 tokens per session scan A 690e7cdb76dc
workers-security-auditor is an agent published in the GitHub repository secondsky/claude-skills (214 stars, last pushed yesterday), licensed MIT. It adds 39 tokens to every session and 5,002 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
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