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Y Combinator in San Francisco,

Own Your Intelligence Hackathon

Sync People & AIs

A talk by Brad Gessler of GBrain at the opening of a day of building at the frontier of AI-native software, hosted by River AI, GBrain, Memorable, QM, Superset and UFO.

GBrain

Sync People & AIs

gbrain.io

GBrain started as Garry's open source memory

github.com/garrytan/gbrain

Sources

30,000 stars on GitHub

GBrain's stars on GitHub, from 0 on April 5, 2026 to 30,346 on September 26: 13,178 on May 5.
Date Count
April 5, 2026 0
April 9, 2026 124
April 10, 2026 1,650
April 12, 2026 5,638
April 13, 2026 7,092
April 15, 2026 8,009
April 25, 2026 11,198
April 26, 2026 11,409
April 27, 2026 11,769
May 5, 2026 13,178
May 6, 2026 13,357
May 10, 2026 14,437
May 12, 2026 14,955
May 14, 2026 15,527
May 20, 2026 17,704
May 25, 2026 18,761
May 26, 2026 19,046
June 1, 2026 20,175
June 22, 2026 23,761
June 25, 2026 24,095
July 10, 2026 25,801
July 11, 2026 25,858
July 17, 2026 26,453
July 30, 2026 27,412
August 1, 2026 27,543
August 3, 2026 27,683
August 13, 2026 28,357
August 16, 2026 28,516
August 19, 2026 28,728
August 22, 2026 28,886
September 15, 2026 29,945
September 26, 2026 30,346

Sources

806 pull requests merged since May

Pull requests merged into GBrain, a running total from April to September 2026: 75 before May 1, and 881 on September 26.
Date Count
April 5, 2026 0
April 6, 2026 1
April 13, 2026 21
April 20, 2026 34
April 27, 2026 60
May 4, 2026 84
May 11, 2026 121
May 18, 2026 152
May 25, 2026 196
June 1, 2026 239
June 8, 2026 265
June 15, 2026 281
June 22, 2026 289
June 29, 2026 290
July 6, 2026 292
July 13, 2026 294
July 20, 2026 368
July 27, 2026 604
August 3, 2026 710
August 10, 2026 728
August 17, 2026 799
August 24, 2026 822
August 31, 2026 842
September 7, 2026 855
September 14, 2026 859
September 21, 2026 864
September 26, 2026 881

Sources

Own your memory and take it with you

GBrain setup used to take hours

Garry, Brad and Jamie in a room with laptops open, setting up the world's second GBrain.

GBrain.io setup takes minutes

GBrain.io is memory, tools, skills and workspaces

Memory

what your team knows

Tools

Gmail, Calendar, Stripe and more

Skills

jobs done in one click

Workspaces

where your team prompts together

People and AIs share one memory

No more API key hell

Connect everything to GBrain.
The AI never sees your credentials.

A diagram: AIs ask GBrain, which holds the keys for Gmail, Calendar and Stripe, checks the permission and the day's limit, makes the call and writes the record; the accounts answer. No key reaches an AI.

See how every AI uses your tools, and cut any AI off

A log of every call an AI makes with connected accounts

One row per call. Who asked, which AI, which account, what it did, whether it was allowed.

See how it works

A kill switch for every AI, and an expiry date

Turn an AI off and its next call is refused. Every AI's access also has an end date.

See how it works

A circuit breaker on every tool, for when an AI goes haywire

Every tool on every account has a daily line. Cross it and that tool trips; nothing else does.

See how it works

Three of the tools' features, as the site's cards: a log of every call an AI makes, a kill switch for every AI, and a circuit breaker on every tool.

One-click skills keep our team in sync and close to customers

  • 🌅

    Daily sync

    Every day at 2 PM: what happened in GitHub, Stripe and our inbox, sent to the team.

  • 📨

    Shared inbox

    Drafts replies to our customers from what the team knows. We send them.

  • 📝

    Meeting prep

    Disabled

    A one-page brief on everyone in tomorrow's meetings.

  • 🏛️

    Watch SF planning

    Disabled

    Every agenda posted since yesterday, and what changed.

A list of the team's skills: Daily sync and Shared inbox switched on, Meeting prep and Watch SF planning off.

A workspace is where your team prompts together

Refunds: who owns it

Marco

First week here, and I am picking up billing. Who owns refunds, and what has the team already decided about them?

Dana owns billing. The team settled the refund question in June, and there is a thread behind it.

being answered

Maya

We moved that window to 30 days in August. Fix the note while you are in there.

Read the refund decision 

memory, written Jun 18

Checked it against the thread 

Aug 4, six replies

Dana owns it, and Maya is right that the window moved. I have updated the note to 30 days, and

Writing a reply…
A workspace thread: Marco asks who owns refunds, GBrain answers from the team's notes, Maya corrects the date, and GBrain updates the note.

Every workspace is a private server for your team

A private server per workspace, kept up to date by gbrain.io

The memory and skills run on a machine of the workspace's own, wrapped and kept current by gbrain.io.

See how it works

Invite the team, and decide who administers

Members use every workspace in the organization. Admins invite, remove, and pay.

See how it works

Sign in with Google, or an email link, and no passwords

The whole team gets in with the accounts they already have. There is nothing to reset.

See how it works

Run the workspace on the model you prefer, from Anthropic or OpenAI

Pick the model a workspace thinks with, and change it later. Everything else stays.

See how it works

Named threads, with unread counts and the last thing said

A thread per piece of work, named. See which ones moved since you last looked.

See how it works

The workspace keeps working with the laptops closed

Hand it a job at night. Open the thread in the morning and the work is there.

See how it works

Six of a workspace's features, as the site's cards: a private server kept up to date, members and roles, single sign-on, a choice of model, named threads, and work that carries on with the laptops closed.

The Fortune 9 billion

Anyone who can think up a company should be able to run it with the reach of a Fortune 500.

In 1965, all the computing on Earth added up to less than one iPhone

Sources

The computing used to train AI now doubles every six months

Sources

GBrain will connect people and AIs to build the Fortune 9 billion

Side quest: solve a tedious problem with GBrain

Two free weeks of GBrain for hackathon participants

Spin up a GBrain

Sign in with Google or an email link, and a workspace is up and running in about two minutes. You own what it learns, and you can take it with you.

Get started