Borrowing it
Nothing to install: this file belongs to virgil-king/kbtz. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/virgil-king/kbtz/main/CLAUDE.mdgit clone --depth 1 https://github.com/virgil-king/kbtzWrote 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/instructions/virgil-king/kbtz/claude-md)<a href="https://agentmods.dev/instructions/virgil-king/kbtz/claude-md"><img src="https://agentmods.dev/badge/instructions/virgil-king/kbtz/claude-md/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/instructions/virgil-king/kbtz/claude-md"><img src="https://agentmods.dev/badge/instructions/virgil-king/kbtz/claude-md.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 | $0.00135 | $0.00135 |
| Opus 5 | $0.00068 | $0.00068 |
| Sonnet 5 | $0.00027 | $0.00027 |
| Haiku 4.5 | $0.00014 | $0.00014 |
Grade A, and why
kbtz CLAUDE.md 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 8d 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
kbtz
Workflow
All changes must be submitted as pull requests. Never merge directly to main without a PR.
Plugin versioning
When modifying any file under plugin/, bump the plugin version in both:
plugin/.claude-plugin/plugin.json— the"version"field.claude-plugin/marketplace.json— the"version"field for thekbtz-toolsentry
Both files must have the same version. Use semver (MAJOR.MINOR.PATCH): bump PATCH for fixes, MINOR for new features or non-breaking changes, MAJOR for breaking changes.
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.
- 8d ago First seen · 15 lines · 135 tokens per session scan A 30c6c937a3e7
kbtz CLAUDE.md is an instructions file published in the GitHub repository virgil-king/kbtz (2 stars, last pushed 23d ago), licensed Apache-2.0. It adds 135 tokens to every session, about $0.0007 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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