Marrow
How it worksGet started
Second brain OS

Your second brain that actually does things

Run your morning.

Connect Slack, Stripe, and Gmail. Marrow runs your playbooks on your data, learns how you work, and delivers briefings you can act on. Install packs from others — or publish your own when a routine is worth sharing.

Get started free No credit card required.
Connects toSlackStripeGmailGitHubNotionGallery

You repeat the same checks every day — Slack, metrics, email — but every morning starts from scratch. ChatGPT gives advice; it doesn't run your routine on your stack.

Marrow is an operating system for how you think and work: playbooks that execute on your accounts, a brain that remembers your judgment, and a gallery where you can install — or sell — executable packs when you need them.

Two layers

What you know.
What you run.

Remember

Your knowledge & voice

Ingest sources, train your brain, build skills — frameworks that compound over time. Optional on day one; deepens every week.

-> "This is how I think about pricing."

Execute

Playbooks on your stack

Multi-step routines on your connected accounts: check Slack, pull Stripe, summarize GitHub — structured output and run history every time.

-> "Here's what happened and what to do."

How it works

Connect, describe,
run.

01

Connect your tools

Link Slack, Stripe, Gmail, and more via secure OAuth. Your credentials, your data.

02

Describe your routine

Tell Marrow what you check — or start from a recommendation. We build a playbook you can edit.

03

Run on demand or schedule

Get a structured briefing every run. Schedule weekday mornings so it's waiting when you wake up.

04

Install or publish packs

Add someone else's playbook and judgment to your stack — or package what you run and sell it in the gallery.

See it in action

Not a chatbot answer.
A run on your stack.

Your morning playbook hits Slack, Stripe, and Gmail in order — then delivers a structured briefing you can act on.

Your brain · Morning playbook
Slack · Stripe · Gmail
Run my morning briefing

Playbook · morning-briefing

① Slack overnight② Stripe MRR③ Gmail priority

Step 2 · Stripe — data fetched

MRR
$8,420
↑ 12% MoM
Churn
2.1%
↓ from 3.4%
Trials
14
3 expiring Fri
MB
Morning briefing — Tue Jun 9

Slack: 2 support threads need replies (billing + onboarding). Stripe: MRR up 12% MoM; 3 trials expire Friday — worth a personal check-in. Gmail: investor follow-up from yesterday still open.

Do first: reply to the onboarding thread, then email the expiring trials before noon.

Pricing

14 days free.
Then one subscription.

Marrow OS
14day trial

14-day free trial — no card required to start

Unlimited playbook runs on your connected tools
Visual workflow editor + describe-to-build
Train brain from your sources (optional)
Chat coworker grounded in your runs
Gallery: install or publish packs
Scheduled weekday playbooks
Start free trial ->