bouncer

bouncer is a skill for Claude Code, Codex from buildingopen/bouncer. It costs 121 tokens per session (847 once invoked), scanned A, original, MIT.

An on-demand quality audit that uses Gemini to score code, creative work, advice, research, videos, or other completed work. Gemini is Google’s AI model family.

In plain words
What is it for?
It is for auditing changes, checking work quality, scoring an output, or requesting a deeper verification review.
Why use it?
It gives a separate review of the work and can expose problems the original process missed. For code, it examines the changes and tests; for other work, it evaluates the provided summary and context.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: reads .claude/ paths; mentions CLAUDE.md.

Good fit It is for auditing changes, checking work quality, scoring an output, or requesting a deeper verification review.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/buildingopen/bouncer/skill
Install

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.

Any agent
npx skills add buildingopen/bouncer --skill skill
Clone the repo
git clone --depth 1 https://github.com/buildingopen/bouncer

Made for: Claude Code, Codex.

Wrote 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.

agentmods badge for bouncer

README.md
[![agentmods](https://agentmods.dev/badge/skills/buildingopen/bouncer/skill/github.svg)](https://agentmods.dev/skills/buildingopen/bouncer/skill)
Your own site
<a href="https://agentmods.dev/skills/buildingopen/bouncer/skill"><img src="https://agentmods.dev/badge/skills/buildingopen/bouncer/skill/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.

agentmods 80×15 button for bouncer

Your own site · 80×15
<a href="https://agentmods.dev/skills/buildingopen/bouncer/skill"><img src="https://agentmods.dev/badge/skills/buildingopen/bouncer/skill.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 121 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 847 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00121 $0.00847
Opus 5.5 $0.00048 $0.00339
Sonnet 5.5 $0.00024 $0.00169
Haiku 4.5 $0.00012 $0.00085

Measured 1mo ago against content hash e3cdf567e1d0, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

bouncer 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.

The scan reads SKILL.md. This mod also ships 2 executable files (scripts/bouncer-check.py, scripts/bouncer-deep.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

skill/SKILL.md · 92 lines

How it starts

The opening of the file, as written. The whole thing — 92 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Bouncer - On-Demand Quality Audit

Works for any task type: code, creative work, videos, advice, research, operations.

Mode Selection

  • Quick (default): /bouncer or "score" or "audit"
  • Deep: /bouncer deep or "deep audit" or "verify everything"

Quick Audit

Step 1: Gather context (adapt to the task type)

For code changes: Run git diff:

git diff --stat --no-color
git diff --no-color
git diff --cached --stat --no-color
git diff --cached --no-color

For non-code work (videos, stories, advice, research): Skip git diff. The assistant_text summary is the primary input.

Step 2: Read CLAUDE.md from the current working directory (if it exists).

Step 3: Build a JSON object and pipe it to the bouncer script:

  • assistant_text: THE MOST IMPORTANT FIELD. A thorough summary of what you did this session. Be specific:
    • For code: files changed, bugs fixed, tests written, commands run
    • For creative: what you created, the goal, the audience, key decisions made
    • For videos: the script/story, visual choices, duration, format, iterations
    • For advice: the question asked, your recommendation, reasoning, alternatives considered
    • For research: what you found, sources checked, conclusions drawn
    • CRITICAL: If the staged diff includes changes from prior sessions, note this.
  • diff_stat: Git diff stat (empty string if no code changes or not applicable)
  • diff_text: Git diff (empty string if not applicable)
  • context: The CLAUDE.md contents (empty string if no CLAUDE.md)

Step 4: Run:

echo '<the JSON object>' | python3 ~/.claude/skills/bouncer/scripts/bouncer-check.py

Step 5: Present results exactly as printed.


Deep Audit

For code-heavy tasks where you want Gemini to independently verify claims.

Step 1: Gather context (same as quick audit).

Step 2: Read CLAUDE.md from the current working directory (if it exists).

Step 3: Build a JSON object with:

  • assistant_text: Same thorough summary as quick audit
  • diff_text: Git diff (empty string if not applicable)
  • context: The CLAUDE.md contents (empty string if no CLAUDE.md)
  • cwd: The current working directory (absolute path)

Read the full file on GitHub · 92 lines

Files

What ships with it

2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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.

  1. 1mo ago First seen · 92 lines · 121 tokens per session scan A e3cdf567e1d0

Subscribe to this mod's changes

bouncer is a skill published in the GitHub repository buildingopen/bouncer (5 stars, last pushed 6mo ago), licensed MIT. It adds 121 tokens to every session and 847 once invoked, about $0.0005 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.

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