CLAUDE_BRIDGE_REATTACH_GROUPING

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CLAUDE_BRIDGE_REATTACH_GROUPING is a Claude Code environment variable. Added between v2.1.143 and v2.1.212 and still present in v2.1.295. It is not in the official reference.

StatusPresent in v2.1.295
AddedAdded between v2.1.143 and v2.1.212
CategorySessions
Official docsNot listed

How to set it

For one session, export it in the shell that starts Claude Code:

export CLAUDE_BRIDGE_REATTACH_GROUPING=<value>
claude

To apply it to every session, add it to the env object of a settings file:

// ~/.claude/settings.json
{
  "env": {
    "CLAUDE_BRIDGE_REATTACH_GROUPING": "<value>"
  }
}

Related variables

Frequently asked questions

Which Claude Code version has CLAUDE_BRIDGE_REATTACH_GROUPING?

Added between v2.1.143 and v2.1.212 and still present in v2.1.295.

How do I set CLAUDE_BRIDGE_REATTACH_GROUPING?

Export it before starting Claude Code (export CLAUDE_BRIDGE_REATTACH_GROUPING=value), or add it to the "env" object in ~/.claude/settings.json to apply it to every session.

All variables, searchable: Claude Code environment variables.