leak-check

leak-check is a skill for Claude Code from elitongadotti/cockpit. It costs 37 tokens per session (787 once invoked), scanned A, original, no licence file.

A skill that checks a code diff for secrets, personal information, and private context before sharing or committing it. A diff is the record of changes between versions of files.

In plain words
What is it for?
Run it before creating a commit or pasting changed code and output somewhere public.
Why use it?
It helps prevent sensitive information from being committed or published accidentally.

Skill for Claude Code

Written for Claude Code: when-to-use in frontmatter.

Part of the cockpit plugin — 12 skills, 1 agent, 2 hooks shipped together

Good fit Run it before creating a commit or pasting changed code and output somewhere public.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/elitongadotti/cockpit/leak-check
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 elitongadotti/cockpit --skill leak-check
Clone the repo
git clone --depth 1 https://github.com/elitongadotti/cockpit

Made for: Claude Code.

Or install cockpit, the plugin that ships this one along with the rest of its 12 skills, 1 agent, 2 hooks.

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 leak-check

README.md
[![agentmods](https://agentmods.dev/badge/skills/elitongadotti/cockpit/leak-check/github.svg)](https://agentmods.dev/skills/elitongadotti/cockpit/leak-check)
Your own site
<a href="https://agentmods.dev/skills/elitongadotti/cockpit/leak-check"><img src="https://agentmods.dev/badge/skills/elitongadotti/cockpit/leak-check/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 leak-check

Your own site · 80×15
<a href="https://agentmods.dev/skills/elitongadotti/cockpit/leak-check"><img src="https://agentmods.dev/badge/skills/elitongadotti/cockpit/leak-check.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 37 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 787 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 unknown 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 $0.00037 $0.00787
Opus 5 $0.00018 $0.00394
Sonnet 5 $0.00007 $0.00157
Haiku 4.5 $0.00004 $0.00079

Measured 10d ago against content hash 1e6101f14905, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

leak-check 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.

plugins/cockpit/skills/leak-check/SKILL.md · 75 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

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. 10d ago First seen · 75 lines · 37 tokens per session scan A 1e6101f14905

Subscribe to this mod's changes

leak-check is a skill published in the GitHub repository elitongadotti/cockpit (2 stars, last pushed 2d ago), with no licence file. It adds 37 tokens to every session and 787 once invoked, about $0.0002 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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