You'll noticeTier: how much it should matter to you
3Useful: my rating, 1 to 5
3Signal: worth watching, 1 to 5
System PromptArea: what it touches
ImprovementsKind: in v2.1.322,
ImprovementsSection of the release
What
The main instructions Claude Code gives Claude now include a privacy rule. Claude is told to treat what it learns about you and your project as private. It should not put your name, your project, your email address or other personal details in requests to outside services, for example in a header, a web address or the data it sends, unless you explicitly ask it to.
If an outside service asks automated programs for contact details, such as an email address in the User-Agent (the label a program sends to identify itself), Claude is told to use a generic program name or to ask you.
Why
Changing Claude's instructions changes how it behaves. With this rule, Claude should not pass your personal details to websites or services it contacts on its own.
