[FEATURE] Incognito mode in Claude Code #9044

Preflight Checklist

• [x] I have searched existing requests and this feature hasn't been requested yet
• [x] This is a single feature request (not multiple features)

Problem Statement

Same as #9044 claude code needs an incognito mode to have it handle semi-sensitive stuff occasionally, it happens more often than one might think. And it's already present in the web ui, right?

I just turned off 'Help Anthropic with model training' even though I really don't want to- I code a lot of open source software and you're be more than welcome to have all of that training data, but not if it means I can't derive information from personal documents for small business automation software, to name one example.

Proposed Solution

There should be a claude code incognito session.

Doesn't matter how- --incognito switch is fine, /incognito command is fine.

Alternative Solutions

_No response_

Priority

High - Significant impact on productivity

Feature Category

CLI commands and flags

Use Case Example

I need to search for patterns for software architecture design that are semi-sensitive- not top secret but don't belong on anyone's server for 5 years. Can't use claude code without completely turning off model training.

Additional Context

_No response_