Repo settings

What is a repo subdomain?

It gives a repo its own namespace below devtracker.ai. Enter only the short label—for example, tts, not a full hostname.

Features that require it

Commit previews: URLs such as c-<commit>.tts.devtracker.ai use the subdomain to identify the repo.
Disable HTTP caching on debug proxy: this repo setting cannot be enabled without a subdomain.

When it is conditionally required

Latest-checkout URLs such as latest.tts.devtracker.ai need a unique subdomain when more than one repo would otherwise use the bare latest.devtracker.ai hostname.

Features that do not require it

Regular task previews, interpreted previews, restart links, and managed browser sessions work without one—for example, t5826.devtracker.ai. Port-mode debug servers do not use this setting.

Deployment note: use a unique label and make sure DNS and TLS cover *.tts.devtracker.ai. Subdomain and debug-proxy cache-policy changes take effect after DevTracker restarts.