---
title: "mkcert Zero-Config Local Development TLS Certificate Generator"
description: "mkcert is a zero-configuration CLI tool by Filippo Valsorda that creates locally-trusted development certificates. It automatically installs a local CA in the system root store and generates TLS certificates for localhost, custom domains, and IP addresses without manual PKI management."
verification: "security_reviewed"
source: "https://github.com/FiloSottile/mkcert"
category:
  - "Developer Tools"
framework:
  - "Multi-Framework"
tool_ecosystem:
  github_repo: "FiloSottile/mkcert"
  github_stars: 58399
---

# mkcert Zero-Config Local Development TLS Certificate Generator

mkcert is a zero-configuration CLI tool by Filippo Valsorda that creates locally-trusted development certificates. It automatically installs a local CA in the system root store and generates TLS certificates for localhost, custom domains, and IP addresses without manual PKI management.

## Installation

Choose whichever fits your setup:

1. Copy this skill folder into your local skills directory.
2. Clone the repo and symlink or copy the skill into your agent workspace.
3. Add the repo as a git submodule if you manage shared skills centrally.
4. Install it through your internal provisioning or packaging workflow.
5. Download the folder directly from GitHub and place it in your skills collection.

## Source

- [Agent Skill Exchange](https://agentskillexchange.com/skills/mkcert-local-dev-tls-certificate-generator/)