What
In sessions running under CLAUDE_CODE_COORDINATOR_MODE, you can now set a new CLAUDE_CODE_COORDINATOR_EXTRA_TOOLS environment variable to a comma-separated list of tool name prefixes, which are allowed through in addition to the built-in coordinator allowlist (which already includes tools like github).
Why
This lets coordinator-mode sessions, which normally restrict tool access, be extended with additional tools as needed without changing the built-in allowlist.
Names in the bundleCLAUDE_CODE_COORDINATOR_EXTRA_TOOLSCLAUDE_CODE_COORDINATOR_MODE