Borrowing it
Nothing to install: this file belongs to karlkfi/claude-bouncer. 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/karlkfi/claude-bouncer/main/CLAUDE.mdgit clone --depth 1 https://github.com/karlkfi/claude-bouncerWrote 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/karlkfi/claude-bouncer/claude-md)<a href="https://agentmods.dev/instructions/karlkfi/claude-bouncer/claude-md"><img src="https://agentmods.dev/badge/instructions/karlkfi/claude-bouncer/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/karlkfi/claude-bouncer/claude-md"><img src="https://agentmods.dev/badge/instructions/karlkfi/claude-bouncer/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 | $0.02265 | $0.02265 |
| Opus 5.5 | $0.00906 | $0.00906 |
| Sonnet 5.5 | $0.00453 | $0.00453 |
| Haiku 4.5 | $0.00227 | $0.00227 |
Grade A, and why
claude-bouncer 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 1mo 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 — 174 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Working in claude-bouncer
Five Claude Code guard plugins in one marketplace. Each plugin under
plugins/<name>/ is self-contained and has its own CLAUDE.md covering its
rules. Read that one for plugin work. This file covers what is true of the repo
as a whole. Releasing is one of those things: it moves the root manifest and
the root README, so the runbook is docs/development/release-process.md and
there is no per-plugin one. The backlog is another — one store for all five,
below.
Never edit a vendored library copy
lib/ holds the shared modules: bouncer_parse.py, the shell parser,
bouncer_grants.py, the session-grant store, and bouncer_wrappers.py, each
command wrapper's option grammar. Every plugin carries a copy of
each at plugins/<name>/lib/, written by scripts/sync-lib.py, which syncs
every module named in its MODULES tuple. Adding a module there is what makes
it shared — a file dropped in lib/ and not named is vendored nowhere.
Edit the root copy, then run make sync. A vendored copy is overwritten
without warning, so an edit made there is lost at the next sync, and until then
the guards disagree about what a command means. make sync-check is a CI gate
and runs before the tests: a plugin suite passing against a stale copy is the
failure it exists to catch.
The copies exist because Claude Code copies a plugin into
~/.claude/plugins/cache/<marketplace>/<plugin>/<version>/ at install time and
a path climbing out of the plugin root does not resolve there. Symlinks to a
marketplace sibling are dereferenced for a git-hosted install but skipped for
--plugin-dir and local-path installs, which is how this repo gets tested, so
vendoring is the only form that behaves the same everywhere.
The Windows hook launcher, run-python-hook.cmd, is the one shared file
sync-lib.py cannot write. It has to sit beside the script it runs, and a #
banner breaks its first line. Edit all five copies together. make launcher-check fails if they differ, if one loses its executable bit, or if
one loses its LF pin.
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.
- 1mo ago Changed · +1 lines · +14 tokens per session eb400d468034
- 1mo ago Changed · +14 lines · +219 tokens per session e6fbba73997f
- 2mo ago Changed · +11 lines · +186 tokens per session 04118d07f584
- 2mo ago First seen · 148 lines · 1,846 tokens per session scan A 6bd834869554
claude-bouncer CLAUDE.md is an instructions file published in the GitHub repository karlkfi/claude-bouncer (13 stars, last pushed yesterday), licensed MIT. It adds 2,265 tokens to every session, about $0.0091 per session on Opus 5.5. 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.
claude-bouncer CLAUDE.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| claude-bouncer CLAUDE.mdkarlkfi/claude-bouncer | Instructions file | 13 | yesterday | MIT | A | 2,265 | Claude Code |
| vscode buildNext.instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 9,719 | GitHub Copilot |
| vscode oss-third-party-notices.instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 5,516 | GitHub Copilot |
| next.js AGENTS.mdvercel/next.js | Instructions file | 143k | yesterday | MIT | A | 7,461 | Codex, OpenCode |
| langchain AGENTS.mdlangchain-ai/langchain | Instructions file | 149k | today | MIT | A | 4,680 | Codex, OpenCode |
| vscode copilot-instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 3,093 | GitHub Copilot |
| vscode model-prompts.instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 2,022 | GitHub Copilot |