For founders running 2–5 companies

Stop the theater.
Run your portfolio.

Serial HQ pulls every signal from your tools, kills the meetings that waste your week, and surfaces what actually needs your attention — across every company, in one feed.

Start 14-day free trial → See how it works

No credit card required · Full Operator plan unlocked on day 1

Gmail · Google Calendar · Slack · Microsoft Teams · Notion · Linear · HubSpot · Google Drive · Jira · Salesforce · Asana · Gmail · Google Calendar · Slack · Microsoft Teams · Notion · Linear · HubSpot · Google Drive · Jira · Salesforce · Asana ·

"Networking events, random check-in meetings. You're not getting anything done. You're not getting any good advice. You're not setting any agendas. No real work is being done. You're just filling your calendar with busy work."

Founder · 30 years building startups · r/startups

The problem

Running multiple companies
is a different problem.

Every productivity tool assumes you run one thing. You don't. And the chaos compounds across every company you touch.

Calendar theater

40% of your week is meetings that produce nothing. Check-ins with no agenda. Catch-ups with no update. Theater dressed as work.

Decision amnesia

You re-open the same debates every quarter because no one recorded why you decided what you decided. The context dies in Slack.

Signal overload

Your signals live across 8 tools across 3 companies. Nothing connects. The P0 bug and the stale investor email sit equally invisible.

The product

One command centre.
Every company.

01 · AI

Signal Stream

Claude scans every connected tool across every company and distills the noise into tasks, meetings, and decisions — one unified feed.

02 · Gate

Meeting Gate

Every meeting request runs three gates. No agenda, no meeting. Fails the gate? Auto-generate an async message and send it from Serial HQ.

03 · Memory

Decision Log

Log what you decided, why, and what would need to be true to revisit it. The field everyone skips — the one that stops the same debate twice.

04 · Focus

Daily Triage

Three priorities. One inbox dump. One question: what's the thing you keep avoiding that would actually move this forward?

How it works

From chaos to clarity
in one sync.

01 —

Connect your tools

Link Gmail, Calendar, Slack, Teams, Notion, Linear, HubSpot and more. Each company gets its own workspace.

02 —

AI Sync runs

Claude scans every connected tool, reads the signals, and classifies everything into tasks, meetings to gate, and decisions to make.

03 —

Gate every meeting

Meeting requests get flagged automatically. Run the gate. Kill the noise. Send an async message in one click if it doesn't pass.

04 —

Log the decisions

Capture what you decided and why. Build the institutional memory that stops you re-litigating the same calls six months later.

Integrations

Works with the tools
you already run.

Gmail Live

Google Calendar Live

Slack Coming

Microsoft Teams Coming

Google Drive Coming

Notion Coming

Linear Coming

HubSpot Coming

Jira Coming

Salesforce Coming

Asana Coming

Loom Coming

Pricing

Priced for the
portfolio, not the product.

The upgrade axis is companies — not features. Every tier gets the full product. You pay as your portfolio grows.

Founder

$29/mo

1 company. Everything works.

✓AI Sync — all integrations

✓Meeting Gate + async send

✓Decision Log

✓Daily Triage

–Multi-company workspaces

–Cross-portfolio signal view

–Team seats

Stop the theater.Run your portfolio.

Running multiple companiesis a different problem.

One command centre.Every company.

From chaos to clarityin one sync.

Works with the toolsyou already run.