Unclear It is not settled whether this catalog check runs in the Claude Code command-line tool or only in the desktop app.
Claude Code now has a service that downloads a model catalog: signed information used by the model picker, the menu where you choose which Claude model to use. It is checked again every 5 to 15 minutes. Signed means the catalog carries a check that it really came from Anthropic.
The configuration that controls these outgoing network connections also gained new options:
- Endpoints can now require an exact path and can report undelivered requests as a 503 "service unavailable" error.
- The configuration format gained ways to say which conditions a rule applies under and whether sessions run away from your own device.
This is a new regular network connection. If you watch or restrict what Claude Code connects to, expect it to reach out for the model catalog every few minutes.
It is not settled whether this catalog check runs in the Claude Code command-line tool or only in the desktop app.