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 skills/rand/cc-polymath/discover-securitynpx skills add rand/cc-polymath --skill discover-securitygit clone --depth 1 https://github.com/rand/cc-polymathWhat 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 | $0.00042 | $0.01625 |
| Opus 5 | $0.00021 | $0.00813 |
| Sonnet 5 | $0.00008 | $0.00325 |
| Haiku 4.5 | $0.00004 | $0.00162 |
Grade A, and why
discover-security 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 2d 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 — 253 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Security Skills Discovery
Provides automatic access to comprehensive application security, vulnerability assessment, and security best practices skills.
When This Skill Activates
This skill auto-activates when you're working with:
- Authentication and authorization systems
- Input validation and sanitization
- Security headers (CSP, HSTS, CORS)
- Vulnerability scanning and penetration testing
- OWASP Top 10 vulnerabilities
- Secrets management (Vault, AWS Secrets Manager)
- SQL injection, XSS, or other attack prevention
- Security hardening and compliance
- Password hashing and credential management
- API security and access control
Available Skills
Quick Reference
The Security category contains 6 specialized skills:
- authentication - Authentication patterns (JWT, OAuth2, sessions, MFA, password security)
- authorization - Access control (RBAC, ABAC, policy engines, permissions)
- input-validation - Input validation and sanitization (SQL injection, XSS, command injection)
- security-headers - HTTP security headers (CSP, HSTS, X-Frame-Options, CORS)
- vulnerability-assessment - Security testing (OWASP Top 10, scanning tools, pentesting)
- secrets-management - Secrets handling (Vault, AWS Secrets Manager, key rotation)
Load Full Category Details
For complete descriptions and workflows:
Read ../security/INDEX.md
This loads the full Security category index with:
- Detailed skill descriptions
- Usage triggers for each skill
- Common workflow combinations
- Cross-references to related skills
Load Specific Skills
Load individual skills as needed:
Identity and access
Read ../security/authentication.md Read ../security/authorization.md
Input security
Read ../security/input-validation.md Read ../security/security-headers.md
Security operations
Read ../security/vulnerability-assessment.md Read ../security/secrets-management.md
Common Workflows
Secure Web Application
Sequence: Authentication → Authorization → Input validation → Security headers
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.
- 2d ago First seen · 253 lines · 42 tokens per session scan A c9b7cc4f35ee
discover-security is a skill published in the GitHub repository rand/cc-polymath (136 stars, last pushed 6mo ago), licensed MIT. It adds 42 tokens to every session and 1,625 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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