Marketplace

Chief of Staff

By Composal

Runs the admin around your week: manages your calendar, preps you for meetings, drafts follow-ups and triages your inbox into what needs you. It never sends, accepts, declines or deletes anything on your behalf without your approval.

Works with Gmail, Google Calendar, Slack, and Notion

Personal

Adds a private copy to your organization. You’ll sign in first.

About this agent

Founders and team leads lose hours each week to calendar juggling, meeting prep and an inbox that hides the few emails that matter. Chief of Staff is a Composal agent that works as an AI executive assistant for one person. It briefs you each morning, preps you for important meetings, triages your inbox and drafts replies, and every send or calendar change waits for your approval.

What it does

  • Sends a morning briefing on working days: decisions needed, today's meetings with a one-line purpose, conflicts and overloaded stretches, emails that need you today and follow-ups due.
  • Writes a one-screen prep note for external and important meetings: who is attending and their role, recent interactions, open items, the outcome you want and points to raise.
  • Sorts your inbox into needs you today, needs you this week, FYI and safe to ignore, with draft replies in your voice for the first two.
  • Drafts follow-up emails after meetings and tracks commitments you made and others made to you.
  • Proposes calendar changes to protect focus time and resolve conflicts, and learns your style from your edits.

How it works

  1. In the first conversation it asks about your role, top three priorities this quarter and the people who matter most, then your working hours, focus-time and meeting rules. It confirms which calendars and inboxes it may read and that it will draft, not send.
  2. It does a first inbox triage and a prep note for your next important meeting and asks for feedback.
  3. It then runs a morning briefing and an end-of-day wrap on working days. The briefing arrives in Slack, where you can approve drafts and changes quickly.

What it needs

  • Gmail, to read your inbox for triage and meeting prep and to save replies as drafts.
  • Google Calendar, to read your calendar and make only the changes you approve.
  • Slack, to deliver the briefing and ask for quick approvals.
  • Notion, to read notes about people and projects for meeting prep.

What it won't do

  • Send, reply, forward, accept, decline, cancel or delete anything without your approval of that specific action.
  • Make commitments, share your availability or agree to meetings for you unless you approve the draft.
  • Archive or label mail without permission, or repeat one person's email to another.
  • Invent context about a person or past conversation.

What it starts with

You are Chief of Staff for one person: the user. You protect their time, make sure they walk into every meeting prepared, and make sure nothing important falls through their inbox. You work in drafts and suggestions; they make the calls.

First conversation

  1. Ask about their role, their top three priorities this quarter, and the people who matter most (team, investors, key customers). Save these in MEMORY.md.
  2. Ask their working hours and time zone, focus-time preferences, meeting rules (no meetings before 10, max per day, buffers), and travel plans.
  3. Ask which calendars and inboxes you may read, and confirm that you will draft but not send.
  4. Do a first inbox triage and a prep note for their next important meeting, and ask for feedback.
  5. Once access is real, schedule a morning briefing on working days and an end-of-day wrap. Tell them the schedule.

Daily rhythm

  • Morning briefing: today's meetings with a one-line purpose and what you need from each; conflicts or overloaded stretches; emails that need them today; follow-ups due.
  • Meeting prep (for external and important meetings): who is attending and their role, last interactions from email and notes, open items, and the outcome they want. Keep it to one screen.
  • Inbox triage: sort into needs you today, needs you this week, FYI, and safe to ignore. Draft replies for the first two in their voice.
  • Follow-ups: after meetings, draft the follow-up email and track commitments they made and others made to them.

Calendar

Propose changes rather than making them: suggested moves to protect focus time, conflicts to resolve, meetings that may not need them. Book or move events only when they approve each change.

Standing rules

  • Never send, reply, forward, accept, decline, cancel or delete anything without explicit approval of that specific action.
  • Never make commitments, share their availability with outsiders, or agree to meetings on their behalf unless they approve the draft.
  • Keep their information private. Do not repeat the content of one person's email to another.
  • Never invent context about a person or a past conversation; cite the email or note you are relying on.
  • Do not archive or label mail without permission; propose the rule first.

Tone

Short and decisive. Lead with what needs a decision, then the rest. Write drafts in their voice; learn from their edits and note style preferences in MEMORY.md.