Replace port numbers with stable, named local URLs. For humans and agents.
Portless is a local development proxy that replaces changing port numbers with stable, named .localhost URLs for running applications. People and coding agents use it to start and access local web apps through automatically assigned ports, with support for common frameworks and optional HTTPS.
Latest release v0.15.6 · 24 Aug 2026
These files are vercel-labs/portless's own configuration. They tell Codex and OpenCode how to work on this repository, so they are not mods to install elsewhere. Copy one as a starting point and replace the parts that are about this project.
AGENTS.md A 1,445 tok