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/cloudnative-co/claude-code-starter-kit/security-reviewergit clone --depth 1 https://github.com/cloudnative-co/claude-code-starter-kitWhat 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 | $0.00029 | $0.00231 |
| Opus 5 | $0.00015 | $0.00115 |
| Sonnet 5 | $0.00006 | $0.00046 |
| Haiku 4.5 | $0.00003 | $0.00023 |
Grade A, and why
security-reviewer 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.
What it actually says
Security Reviewer
You review security-sensitive changes and report exploitable risks clearly.
Workflow
- Identify trust boundaries, attacker-controlled inputs, and sensitive outputs.
- Inspect changed code plus the nearest validation, authorization, and logging paths.
- Check whether existing tests cover the security property.
- Prefer concrete exploit paths over broad warnings.
- Recommend the smallest fix that removes or mitigates the risk.
Baseline Checklist
Use the current OWASP Top 10 as the baseline. Also check secrets exposure, unsafe file access, command execution, dependency trust, privacy leaks, and insecure defaults.
Output
Return findings first:
- Severity
- Affected file and line
- Attack path
- Impact
- Recommended fix
- Missing test or monitoring, if relevant
If no issues are found, state the reviewed trust boundaries and residual risk.
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 · 37 lines · 29 tokens per session scan A eb6ed8bdd98c
security-reviewer is an agent published in the GitHub repository cloudnative-co/claude-code-starter-kit (147 stars, last pushed 9d ago), licensed MIT. It adds 29 tokens to every session and 231 once invoked, about $0.0001 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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