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/zircote-plugins/sdlc-quality/securitynpx skills add zircote-plugins/sdlc-quality --skill securitygit clone --depth 1 https://github.com/zircote-plugins/sdlc-qualityWhat 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 | $0.00070 | $0.01305 |
| Opus 5 | $0.00035 | $0.00652 |
| Sonnet 5 | $0.00014 | $0.00261 |
| Haiku 4.5 | $0.00007 | $0.00130 |
Grade A, and why
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 — 214 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Security Standards
Guidance for implementing security requirements including dependency scanning, supply chain security, and vulnerability management.
Tooling
Available Tools: If using Claude Code, the
pr-review-toolkit:silent-failure-hunteragent identifies security issues in error handling. Use security scanning tools native to your language ecosystem.
Dependency Security
Vulnerability Scanning (MUST)
Projects MUST use automated dependency vulnerability scanning.
| Language | Tool | Command |
|---|---|---|
| Rust | cargo-audit | cargo audit |
| Node.js | npm audit | npm audit |
| Python | pip-audit, safety | pip-audit |
| Java | OWASP Dependency-Check | dependency-check |
| Go | govulncheck | govulncheck ./... |
Scanning Schedule (MUST)
Scanning MUST occur:
- On every pull request
- On every push to protected branches
- On a scheduled basis (daily minimum)
Vulnerability Response (MUST)
Critical and high severity vulnerabilities MUST block PR merges.
Vulnerability Exceptions
Known vulnerabilities that cannot be fixed MUST be:
- Documented with justification
- Listed in an ignore/allowlist with expiration dates
- Reviewed quarterly
# Example: cargo-deny ignore
[advisories]
ignore = [
# RUSTSEC-2024-0001: No fix available, mitigated by input validation
# Expires: 2024-06-01, Review: Issue #123
"RUSTSEC-2024-0001",
]
Supply Chain Security
Required Checks (MUST)
| Check | Purpose |
|---|---|
| License compliance | Verify all dependencies use allowed licenses |
| Source verification | Ensure dependencies from trusted sources |
| Advisory database | Check against known vulnerability databases |
| Package bans | Block known problematic packages |
| Duplicate detection | Identify multiple versions of same package |
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 · 214 lines · 70 tokens per session scan A 2efd641fe9a3
security is a skill published in the GitHub repository zircote-plugins/sdlc-quality (10 stars, last pushed 29d ago), licensed MIT. It adds 70 tokens to every session and 1,305 once invoked, about $0.0003 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 2026-08-31.
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