Quick facts
- Best for
- portless gives AI agents stable local HTTPS app URLs
- Pricing
- Free
- Editor rating
- 4.5 / 5
- Community saves
- 0
About portless
portless is an open-source Vercel Labs developer tool that replaces changing localhost port numbers with stable named .localhost URLs. It runs apps behind a local proxy, provisions trusted local HTTPS, and passes framework-specific port settings to common dev servers so humans and AI coding agents can use predictable URLs.
Pros
- Named .localhost URLs replace changing port numbers
- Local HTTPS with HTTP/2 by default
- Automatic proxy startup for wrapped dev commands
- Framework-aware port and host flag injection
- Works with human developers and browser-using AI agents
Cons
Pricing
Open source
$0
- • Apache-2.0 licensed GitHub project
- • Install with npm
- • Run local apps through named .localhost URLs