theHarvester OSINT Email and Subdomain Intelligence Gatherer

theHarvester is an open-source OSINT tool for gathering emails, subdomains, hosts, employee names, open ports, and banners from public sources. Used during reconnaissance in penetration testing and red team assessments, it queries search engines, PGP key servers, the Shodan API, and other data sources to map an organization’s external threat surface.

theHarvester OSINT Email and Subdomain Intelligence Gatherer

theHarvester is an open-source OSINT tool for gathering emails, subdomains, hosts, employee names, open ports, and banners from public sources. Used during reconnaissance in penetration testing and red team assessments, it queries search engines, PGP key servers, the Shodan API, and other data sources to map an organization’s external threat surface.

Installation

Method 1, Agent Skill Exchange

Method 2, Git clone

git clone https://github.com/agentskillexchange/skills.git && cd skills/skills/theharvester-osint-email-subdomain-intelligence

Method 3, Download ZIP

  • Download the repository ZIP and extract skills/theharvester-osint-email-subdomain-intelligence.

Method 4, Manual copy

  • Copy this skill folder into your local skills directory, then reload your agent tooling.

Method 5, Fork and sync

  • Fork the repository if you want to maintain local edits while syncing upstream changes.

Source