What
Claude in Chrome lets Claude Code act in your Chrome browser. You can deny it certain sites. Those deny rules are now checked more strictly:
- Each site is checked both by its name and by its name with a port number (the number after a colon in an address, such as
:80). - A plain
httpaddress with no port is treated as port 80. A rule for that site with:80therefore also matches. - If Claude Code cannot tell which site an action would affect, and you have any deny rules, it refuses the action. It shows: "Claude in Chrome could not tell which site this call would act on, so it could not check the sites that are denied."
Claude Code also strips host-only arguments from the requests it sends to Chrome before they run.
Why
This closes gaps through which an action could reach a site you had blocked. Examples are writing the address with a port, or sending an action whose target site could not be read. If you use deny rules, some actions that went through before may now be refused.