What a mastermind is
Peers who meet on a fixed schedule to work on each other's real problems. One person takes the hot seat. The rest ask questions before they give advice.
Mastermind circles
The strongest structures are
woven, not built alone.
Find the hour your whole circle shares. Pick a rhythm. Leave with an invite that repeats itself.
- No accounts. It all stays in your browser.
- No server. People join by link.
- Real invites. They recur on their own.
01 β The idea
What is a keiretsu?
A keiretsu (η³»ε) is a Japanese business network. After the war, independent firms tied themselves to each other β shared banks, crossed shareholdings, and a standing meeting that ran on the same day every month for decades.
They gave up some speed for something you can't buy: people who pick up the phone, and who are still there in a bad year. The real thing had real flaws. The instinct still travels, and it's the one this site is built on.
What kills them
Not the idea β the reply-all thread about Tuesdays. Settle the hour once and the circle lives long enough to be worth something.
What good looks like
Five people, ninety minutes, same slot every fortnight. And a rule that you say the thing you'd rather not say out loud.
02 β How it works
Four steps, one afternoon
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1
Sign up
Your name, your timezone, what you're working on.
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2
Paint your week
Drag across the hours you could actually hold.
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3
Share your link
Send it to whoever's organising. The circle fills up.
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4
Lock the rhythm
Pick the overlap, pick a cadence, download the invite.
03 β In the room
What people actually ask
Stuck on what to bring, or what to say when it's someone else's turn? Start here.
Take to the hot seat
- Here's the decision I keep putting off.
- I'm about to spend real money on this. Talk me out of it.
- This number is going the wrong way and I don't know why.
- I said I'd do something last time. I didn't. Here's why.
- I need to let someone go and I've been avoiding it.
- What would I do if I weren't scared?
Ask before you advise
- What have you already tried?
- What would have to be true for this to work?
- What are you actually afraid of here?
- If nothing changes, where are you in six months?
- Is this your problem, or someone else's?
- What's the smallest version you could test this week?
Then close the same way every time: what are you doing before we next meet? Next session starts by asking whether you did it.
04 β Sign up
Join the circle
Nothing leaves your browser until you share your link.
05 β Overlap tool
Paint the hours you're free
Drag to select, drag again to clear. Switch to at a push for hours you could manage but would rather not. Shown in your local time.
06 β The circle
Find the overlap
Or note down someone you're waiting on
Send everyone their link
Each person gets a link back to their own answers, so they can change the hours they marked without starting over. Your mail app opens one email at a time.
Where the week overlaps
Everyone's week on one timeline, in your timezone. Darker means more people free, amber means someone's stretching. Click a block to pick it.
Best windows
Rhythm
07 β Calendar invite
Send the invite
Take it with you
A standard recurring event with everyone attached. Works in Google Calendar, Outlook, Apple Calendar and Fastmail. Open it once and you're done.
08 β FAQ
Questions about the tool
Do I need an account?
No. There's nothing to sign up for and nothing to log into.
Where does my data live?
In this browser, on this device. It isn't sent anywhere β there's no server behind this page. Clear it any time with Reset all data at the bottom.
How do people join my circle?
Each person fills in the form and paints their week, then sends you their link. You paste it into Add a member and they appear in your circle.
Someone's availability changed. Now what?
They repaint their week and send a fresh link. Paste it in and it replaces what you had for them β links are matched on email, so use the same one. If they've lost their answers, Email everyone their link sends each person back their own.
Does it really handle timezones?
Yes. Everyone paints in their own local time and the overlap is worked out across all of them, half-hour offsets and midnight wraps included. Each suggested window shows what time it lands for everybody.
Will the invite actually repeat?
Yes β it's a standard recurring event. Weekly, fortnightly, or the same weekday every month. Google Calendar, Outlook, Apple Calendar and Fastmail all understand it.
What if no slot works for everyone?
You still get the best windows, and each one names who'd miss it. Usually the answer is a shorter session, not a different week.
How do I move the meeting later on?
Pick a new block and download again. The new file updates the event already in everyone's calendar rather than adding a second one beside it β send it round and the whole series moves.