Getting it into your agent
It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.
git clone --depth 1 https://github.com/byerlikaya/claude-starter-kitnpx agentmods add commands/byerlikaya/claude-starter-kit/gates-cskWrote 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/commands/byerlikaya/claude-starter-kit/gates-csk)<a href="https://agentmods.dev/commands/byerlikaya/claude-starter-kit/gates-csk"><img src="https://agentmods.dev/badge/commands/byerlikaya/claude-starter-kit/gates-csk/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/commands/byerlikaya/claude-starter-kit/gates-csk"><img src="https://agentmods.dev/badge/commands/byerlikaya/claude-starter-kit/gates-csk.svg" alt="Reviewed on agentmods" width="80" 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 5.1 | $0.00024 | $0.00253 |
| Opus 5 | $0.00012 | $0.00127 |
| Sonnet 5 | $0.00005 | $0.00051 |
| Haiku 4.5 | $0.00002 | $0.00025 |
Grade A, and why
gates-csk 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.
What it actually says
Run the report and read it back to the user:
bash .claude/eval/gate-report.sh $ARGUMENTS
Then interpret it in two sentences, in the user's language:
- Exit 3 (no log). Say plainly that gate activity is not measured — not that the gates never fired. Offer the one-line opt-in the report prints. Do not present the rule count as if it were evidence of anything.
- Exit 0. Lead with the verdict split (how often the gates asked vs blocked). Then the notable rules: a rule
firing repeatedly is worth a conversation ("something keeps reaching for this"), and the not-observed list is
a prompt to check whether a rule can still match, not a delete list.
smoke-testis what proves a rule can fire; this only shows what tripped it.
Never infer that a gate works because it appears in the report, or that it is broken because it does not.
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 · 23 lines · 24 tokens per session scan A eceab620eb4b
gates-csk is a command published in the GitHub repository byerlikaya/claude-starter-kit (22 stars, last pushed today), licensed MIT. It adds 24 tokens to every session and 253 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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