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Claude Tag Adds !fast Mode for Slack Threads

Claude CodeView original changelog

Claude Tag in Slack gains a fast mode. Mentioning Claude with !fast switches a thread to fast mode, moving it to Opus if needed, and !fast off switches back. Replies show "(fast)" while it is on.

Key Takeaways

  • !fast in a Slack mention switches a thread to fast mode.
  • Threads on other models are moved to Opus when fast mode is turned on.
  • !fast off returns the thread to its previous mode.
  • Replies show "(fast)" while the mode is active.
  • Access-bundle custom connections can now limit an allow rule to specific path prefixes.
  • Scheduled Slack routines now run on the channel's current default model.

Fast mode from Slack

The 2.1.290 release notes list a Claude Tag change: a user can mention Claude with !fast to switch a thread to fast mode. If the thread is on another model, it moves to Opus. !fast off switches back, and replies carry a "(fast)" marker while the mode is active.

Other Claude Tag changes in the release

  • Custom connections in an access bundle accept an optional Path prefixes field, so an allow rule can cover only those paths instead of the whole host.
  • Scheduled routines in Slack channels now use the channel's current default model for each new session.
  • Claude's direct-message notice when a user's plan usage limit is reached now appears within seconds and says when the limit resets.
  • The channel instructions limit is now 8,192 characters instead of bytes.