The life OS your AI can run
Tasks, notes, boards, money, habits, meals and the whole household in one calm place that remembers what you put in it. Works without internet, keeps your data yours, and hands the filing to your AI instead of to you.
Inbox
Inbox zero.
This week
Ship landing page
Record demo video
12-day streakRenew domain
$12 loggedDone
Set up billing
donereal interface, your agent did this ↑
The lineage
Kept the ritual. Lost the friction.
For centuries, well-run lives lived in the margins. Ledgers, journals, tally marks. The Margin keeps that ritual, and gives it a memory, a sync engine, and an assistant to do the carrying.
Tuesday · week 32, 1924
- post the letters
- morning run · 12 days
- groceries ······· $1.40
- read before bed, ½ hour
— copied over from Monday, again
Then: the ritual, rewritten every week, lost every move.
Post the letters
done · 9:12 · recurring weekly
Morning run
12-day streak · logged by your agent
Groceries · $86.40
64% of the month's budget · split with M.
Read before bed
34-day streak · reminder at 21:30
Now: the same care, synced, remembered, never copied over again.
The Mind
Your apps store your work. None of them remember it.
Five tools, five boxes, and every one of them incurious about the other four. They hold what you put in and leave the filing to you. The Margin reads across your notes, boards, money and habits, and keeps what recurs: the people, the projects, the things you decided.
One Sarah, not three
Named in a note, assigned a card, owed half a dinner. The workspace knows that is one person.
Ask by meaning
“Did anyone say anything about the wedding?” finds the note that discussed it without ever using the word.
Read the list. Change the list.
Everything it believes about you is a plain sentence you can edit or delete. Vault content it never reads at all.
- RoutineReviews the money on Sunday evenings
- FactSarah is the design lead on Harbour
- InsightTrips start as a whiteboard, then become a board
Every line editable, every line deletable, and a Vault it is never given in the first place.
MCP-native
Your AI finally sees the whole picture
For the technical reader: The Margin speaks MCP natively, with 267 tools spanning tasks, notes, money, habits, meals, recipes and the household. Point your editor, your desktop assistant, or an agent you wrote yourself at it over OAuth, and it can read and run your whole system. Agent Pacts keep several of them working to rules the server enforces, not rules in a prompt.
And it stays offline-first while it does. The app on your device holds a real database, not a cache, so your own writing never waits for a network; an agent connects to the server's copy of the same record, and what it changes arrives on your devices the way your own edits do. Neither queues behind the other.
you: log today's run and plan tomorrow around deep work
→ log_habit_entry
{ habit: "Morning run", date: "today" }
✓ 12-day streak
→ create_card
{ title: "Deep work: API design",
board: "This week", due: "tomorrow 9:00" }
✓ scheduled
margin: Run logged, streak intact. Tomorrow's morning is blocked for deep work; I moved the two errands to the afternoon.
Morning run
Logged just now · 12-day streak
Deep work: API design
Morning held free · errands moved to 15:00
Works with Cursor, VS Code, Windsurf, n8n, your desktop assistant, or an agent you wrote yourself. Any MCP client, over OAuth. Scoped tokens, revocable any time.
One system
Everything in its place
Boards, notes, money, habits, meals and the household ledger, on one keyboard, in one search, readable by one AI. Nothing here needs a second app to be useful.
Backlog
Doing
Done
Boards
Kanban with recurrence, labels, PIN-locks, and live cursors.
Habits
Streaks, accountability partners, gentle pressure.
64% of budget · 9 days left
Expenses
Budgets, splits, and settlements in any currency.
Launch retro
What worked: shipping the offline story first…
Notes
Markdown that stays markdown. Folders, wikilinks, backlinks.
18:42
deep work
Focus
Pomodoro sessions tied to the task you're on.
Mon
Tue
Wed
Thu
Fri
Today & Planner
Your week on one calm page, synced from boards and Google Calendar.
Whiteboards
Infinite canvas for thinking out loud, sketches included.
Family
Chores, allowances, a ledger, and a house cup the kids care about.
…and the connective tissue
Meals, recipes, a shared list, agent pacts, templates, checklists, Sheets sync, and an app that installs anywhere.
Proof
Zero mockups on this page
These are production screenshots of a real workspace, and they follow the theme toggle up top, because the app really wears both.
— and the rest of it, drifting by —
Local-first
Airplane-proof by architecture
The Margin keeps a real copy of your life on your device. Everything opens instantly. No spinners, no "reconnecting…". Lose signal on a plane or a train and keep working; it all syncs the moment you're back.
- Your data lives on your device first. The cloud is a backup, not a gatekeeper.
- Changes made offline queue up quietly and sync themselves. Nothing is ever lost.
- Your data exports any time, on every plan, and the local copy on your device is always yours.
Back online. Queue flushed in 0.3s.
Craft
Every mood. One system.
Four light, four dark. Each is hand-built, with its own typography, motion and light, rather than a colour swap. This page is wearing Daybreak right now; the toggle up top flips it.
Moonpool
Moonlit glass over deep slate water — silver-periwinkle light, liquid calm
Daybreak
Warm paper, copper ink, and soft morning light — the study at sunrise
Shorelight
Sea-mist white and deep slate ink with sea-glass light — the coast at morning
Matinee
Beige-box retro computing — aged plastic, phosphor orange, terminal type
Atelier
Porcelain gallery light, graphite ink, and a single vermilion accent — the studio at noon
Midnight Library
Warm Dark Academia — candlelight glow, film grain, leather and wood
Abyssal Calm
Deep Ocean — bioluminescent glow, caustic light, floating particles
VOID_SIGNAL
Glitch / CRT — scan lines, chromatic aberration, corrupted data
Pricing
Replace the stack, keep the change
The stacks this replaces run $18 to $67 a month, depending on which one you are on. No feature gates on the basics. The free plan is genuinely usable, forever.
Free
The full core. Boards, notes, habits, money, recipes, offline.
- 5 boards · 100 notes · 10 habits
- 25 recipes, offline like everything else
- 8 themes + 75 AI actions
Pro
billed annually ($90/yr)
Founding price, locked while you keep the plan
AI, agents, and integrations for power users.
- 600 AI actions / month
- Outside agent access over MCP
- Sheets & Calendar sync
- Webhooks + Zapier/n8n
Family
billed annually · per household ($180/yr)
Founding price, locked while you keep the plan
One plan for the whole household, up to 6.
- Everything in Pro ×6 people
- Chores, allowances, ledger & house points
- Meal plan, shopping list, kitchen display
Teams: $20 per seat a month, minimum 2 seats, or $192 a seat a year. Founding: $120 a seat a year, billed annually. The plan for a team that runs agents: 50 agent pacts, MCP with OAuth, 400 AI actions a seat a month, 50 GB.
Full comparison on the pricing page.
Find your margin
Set up in two minutes. Works offline from day one. Your AI is going to love it here.