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What Leaked About You

What Leaked About You is an agent skill (a SKILL.md file) from UseOSINT/Skills. Check and interpret data-breach exposure for an email, username, phone or name using Have I Been Pwned, the Pwned Passwords k-anonymity range API, DeHashed, IntelX and… It works with Claude Code and Cursor and has 54 GitHub stars across a repository of 2 listed skills.

github.com/UseOSINT/Skills/skills/what-leaked-about-you (opens in a new tab)

Data as of from the GitHub API and skills.sh; description from the skill's SKILL.md. Report an error

View on GitHub (opens in a new tab)View on skills.sh (opens in a new tab)

Add this skill

Claude

This repository is a Claude Code plugin marketplace. In Claude Code:

/plugin marketplace add UseOSINT/Skills
/plugin install useosint@useosint

In the Claude apps, zip the what-leaked-about-you folder and upload it under Customize > Skills > + > Upload a skill (code execution must be on).

ChatGPT / Codex

Codex reads skills from .agents/skills/ in a repo or ~/.agents/skills/ for every project:

git clone --depth 1 https://github.com/UseOSINT/Skills.git
cp -r Skills/skills/what-leaked-about-you .agents/skills/what-leaked-about-you   # repo; ~/.agents/skills for all projects

Standalone skills also load in the ChatGPT desktop app.

Cursor

Cursor loads skills from .cursor/skills/ (or ~/.cursor/skills/) and also reads .claude/skills/:

git clone --depth 1 https://github.com/UseOSINT/Skills.git
cp -r Skills/skills/what-leaked-about-you .cursor/skills/what-leaked-about-you   # project; ~/.cursor/skills for all projects

Source (checked Oct 7, 2026): code.claude.com/docs/en/skills (opens in a new tab), code.claude.com/docs/en/plugin-marketplaces (opens in a new tab), support.claude.com/en/articles/12512180-using-skills-in-claude (opens in a new tab), learn.chatgpt.com/docs/build-skills (opens in a new tab), cursor.com/docs/context/skills (opens in a new tab)

What this skill does

Check and interpret data-breach exposure for an email, username, phone or name using Have I Been Pwned, the Pwned Passwords k-anonymity range API, DeHashed, IntelX and Snusbase. Use when checking breach or leak exposure, finding which services an account was registered with, interpreting a combolist or credential dump, assessing credential compromise, or auditing your own leaked personal data.

When it triggers

  • Use when checking breach or leak exposure, finding which services an account was registered with, interpreting a combolist or credential dump, assessing credential compromise, or auditing your own leaked personal data.

More skills in UseOSINT/Skills

2 skills are listed from this repository.

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FAQ

What Leaked About You FAQ

Still curious? Email info@appsgit.com.

How do I install the What Leaked About You skill?

In Claude Code, run /plugin marketplace add UseOSINT/Skills and then /plugin install useosint@useosint. For Codex or Cursor, copy the what-leaked-about-you folder into .agents/skills/ or .cursor/skills/.

Is the What Leaked About You skill free?

Yes. The repository is open source under the MIT license.

Is What Leaked About You maintained?

The repository's most recent commit was on Aug 3, 2026. Its latest release is v2.0.0. appsgit only lists skills from repositories with a commit in the last six months.