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AutomationPython

CTF OSINT

by ljagiello

CTF OSINT is an Automation skill for Claude Code, published by ljagiello in ctf-skills.

3K stars353 forkson ljagiello/ctf-skillsAdded 2026/08/17+1% in starsRepository updated 2026/07/31
View source on GitHubDownload repo ZIP
agent-skillsclaude-codeclaude-code-skillscodexcodex-clictfctf-challengesctf-toolsgeminigemini-cliopencodesecurity
Install in seconds
Install CTF OSINT
Copy CTF OSINT into your Claude Code skills folder. Run the command in your terminal, or review the source on GitHub before installing.
terminal
npx degit https://github.com/ljagiello/ctf-skills/tree/main/ctf-osint ~/.claude/skills/ctf-osint

Requires Node.js. Downloads this skill only — not the rest of the repository — into your Claude Code skills folder.

Without Node.js

git clone https://github.com/ljagiello/ctf-skills.git

Clones the whole repository, then copy the skill’s own directory into your skills folder yourself.

In this catalog

Source file
ctf-osint/SKILL.md in ljagiello/ctf-skills
Installs to
~/.claude/skills/ctf-osint
Collection
One of 11 skills cataloged from this repository
Category
Automation — 1523 skills

What CTF OSINT does

CTF OSINT provides open source intelligence techniques for CTF challenges. Use it to gather information from public sources, social media, DNS records, images, and more during capture-the-flag competitions.

CTF OSINT is cataloged under Automation on DirSkills. CTF OSINT comes from a repository tagged agent-skills, claude-code, claude-code-skills, codex and codex-cli.

Documentation

README

CTF OSINT

Quick reference for OSINT CTF challenges. Each technique has a one-liner here; see supporting files for full details.

Prerequisites

Python packages (all platforms):

pip install shodan Pillow

Linux (apt):

apt install whois dnsutils nmap libimage-exiftool-perl imagemagick curl

macOS (Homebrew):

brew install whois bind nmap exiftool imagemagick curl

Additional Resources

This is the opening of the README. Read the full README on GitHub.

Commands CTF OSINT provides

Slash commands named in this skill’s SKILL.md, listed in the order they first appear.

  • /ctf-forensics
  • /ctf-web
  • /ctf-malware
  • /export
  • /pub
  • /htmlview
  • /start

Frequently asked about CTF OSINT

  • What else does ljagiello publish alongside CTF OSINT?

    CTF OSINT is one of 11 skills that DirSkills catalogs from ljagiello/ctf-skills, the repository it ships in. Its siblings there include CTF AI/ML, CTF Binary Exploitation and CTF Challenge Solver. Each one is a separate skill with its own page in this directory, installs the same way CTF OSINT does, and is maintained by ljagiello in that same repository. The rest of the collection is listed on the ljagiello/ctf-skills page.

  • How does CTF OSINT compare to other Automation skills?

    CTF OSINT ranks #403 by stars among the 1523 Automation skills in this catalog. The most-starred ones next to it are Autonomous Loops, Autonomous Agent Harness and Automation Audit Ops. DirSkills ranks by the star count of the repository each skill ships in, so that order reflects how popular those repositories are rather than any review of CTF OSINT against them. Open each page to compare what they document and how they install.

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