certificate-transparency

Installation
SKILL.md
Contains Hooks

This skill uses Claude hooks which can execute code automatically in response to events. Review carefully before installing.

Certificate Transparency Skill

Purpose

Query Certificate Transparency logs to discover certificates issued for a domain, extract Subject Alternative Names (SANs), and identify internal naming conventions.

Operations

1. query_crt_sh_json

Query crt.sh for all certificates matching a domain.

Endpoint:

GET https://crt.sh/?q=%25.{domain}&output=json

Request Headers:

Related skills
Installs
11
GitHub Stars
258
First Seen
Mar 9, 2026