portless

Assign named .localhost URLs to local dev servers via a CLI proxy.

1|Updated Mar 7, 2026

Search Tags:#proxy #local-development #localhost #port-management #portless #named-urls

Ready to run

npx skills add https://github.com/ssv445/claude-skills --skill portless-ssv445

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: portless
Source: https://github.com/ssv445/claude-skills/tree/main/portless
Command: npx skills add https://github.com/ssv445/claude-skills --skill portless-ssv445

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Port conflicts and confusion arise when multiple local dev servers use fixed ports; portless replaces numeric ports with stable, named .localhost URLs to simplify development and collaboration.

Core Features & Use Cases

Named local URLs for multiple apps (e.g. http://myapp.localhost)
Automatic proxying and port assignment to avoid conflicts
Seamless integration with existing dev scripts and workflows
Debug-friendly routing and easy troubleshooting for local development

Quick Start

Install portless globally and run your app through the portless proxy to access it at a named .localhost URL.

Frequently Asked Questions about portless

High-intent search queries and answers about installing and using this skill.

FAQPage Schema

How do I use named .localhost URLs instead of fixed port numbers for local development?▼

To use named .localhost URLs for local development, you can set up a CLI-based proxy that automatically assigns ports and routes traffic, replacing fixed numeric ports for your dev servers.

What is the best way to avoid port conflicts when running multiple local dev servers?▼

The best way to avoid port conflicts with multiple local dev servers is using an automatic port assignment proxy that replaces fixed ports with stable, named local URLs like http://myapp.localhost.

Can I use named .localhost subdomains for multi-app and monorepo workflows?▼

Yes, you can use named .localhost subdomains for multi-app and monorepo workflows. A local proxy provides stable subdomain routing and debug-friendly configurations for complex local development setups.

How does automatic port assignment work with a local proxy?▼

Automatic port assignment works by using a local proxy to intercept named .localhost URLs, dynamically mapping them to available ports on your dev servers to prevent conflicts and simplify routing.

Do I need to change my existing dev scripts to integrate a local proxy for named URLs?▼

No, you do not need to heavily modify existing dev scripts. The local proxy offers seamless integration with your current workflows, allowing you to run apps through the proxy and access them via named .localhost URLs.