focus-mode

Focus Mode

A lightweight work timer for deep focus sessions. Opt-in, non-intrusive.

How It Works

When invoked, start tracking a focus session:

1. Note the start time
2. User specifies duration (or default to 90 minutes — research-backed optimal focus block)
3. Claude notes the timer but does NOT interrupt the user's flow
4. If the user asks "how's my timer?" — report elapsed and remaining
5. When the timer expires, mention it naturally at the next prompt — don't force it

Focus Presets

Preset	Duration	Use Case
pomodoro	25 min	Short focused burst
deep-work	90 min	Extended focus (default)
sprint	45 min	Medium burst
marathon	3 hours	Long haul
custom	user-specified	Whatever they want

Starting Focus Mode

When the user says things like:

• "start a focus timer"
• "pomodoro"
• "let's do 2 hours focused"
• "focus mode"

Respond:

Focus mode: [preset name] — [duration]
Started: [time]
Ends: [time]
I'll note when time's up. Get to work.

During Focus

• Do NOT interrupt with timer updates unless asked
• If the user asks "timer?" or "how long?" — give a quick update
• At natural conversation breaks, if time has elapsed, mention it briefly

When Timer Ends

At the next prompt after the timer expires:

Focus timer done — [duration] completed. [Optional: short encouragement].

That's it. One line. Don't make a big deal.

Rules

• Never force breaks — some users hate break reminders. Only mention the timer ending.
• Never guilt-trip — if they work past the timer, that's fine. They're in flow.
• Keep it light — this is a tool, not a taskmaster.