Claude Code Adds Cross-Session `@` Mentions So One Session Can Message Another Directly
Claude Code Changelog·medium signal
In 2.1.232 you can type `@` in the prompt to mention another live Claude session by name, and Claude reaches it via `SendMessage`; a bare name that matches exactly one live session now delivers without a confirmation ref. Sessions on one machine are kept uniquely named — a collision gets a `name-word-word` variant — and new `/config` rows control "Dialog expiry" and whether inbound cross-session messages are accepted, held, or refused. This turns multiple terminal tabs into an addressable agent mesh without any external message bus.