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

ChatGPT MCP

Claude MCP

OpenClaw MCP

GBrain

one MCP address

Gmail

Calendar

Web search

Memory

Claude Code MCP

Cursor MCP

Terminal CLI

Paste one address into each AI and it has the same accounts, at the same permission levels, with the same daily limits and the same record. Add an account here and every one of them can use it on its next call.

The same tools in every AI that speaks MCP

One address, pasted once into ChatGPT, Claude, Claude Code or Cursor. Each gets the same accounts and rules.

See how it works

brad@macbook · gbrainio

$ gbrainio tool gmail message search --unread --newer-than 2d1. Your invoice from Rocketship, LLC   from: Stripe <receipts@stripe.com>   preview: Invoice A41C-0092 for $240.00 was paid automatically.2. Valencia Street packet posted   from: SF Planning <notices@sfplanning.org>   preview: The August packet is available. 214 pages.$ gbrainio tool gcal event ls --limit 31. Standup                       09:302. Review with Jenny             12:003. Planning Commission hearing   13:00$ gbrainio tool gmail draft new --reply-to 198f4a7c02b31d55 --body "Noon works."draft saved: r-7f21a0 (reply to "Tuesday", not sent)

Two days of unread mail, from the terminal or from an AI running the same command.

One command line for every connected account

Gmail and Calendar are two. Every account answers the same way, to a person or an AI.

See how it works

An AI asks

Brad's MacBook

Claude Code

Cursor

asks results

GBrain

Gmail Calendar Web search

1 Checks the permission and today's limit
2 Makes the call with the key it holds
3 Returns the result; the key stays here
4 Writes the record either way

calls results

The account answers

Gmail Google

Calendar Google

Web search Exa

GBrain holds the keys to every account you connect, and never hands one to an AI. An AI gets the results of the calls it was allowed to make; one that is compromised finds no keys where it lives.

Passwords and API keys never reach the AI

Connected accounts are held by GBrain. An AI gets the result of a call, never the key.

See how it works

brad@example.com Google

Gmail

Calendar

Drive

This account hasn't granted Drive yet.

Needs access Grant

Web search

Page fetching

Needs access Grant

A permission level for every application an AI can reach

Gmail has four levels, Calendar two, web search is on or off. Set per application, for each AI.

See how it works

Search "SF planning commission agenda" Oct 31, 1:17 PM Write a draft "jenny@example.com" Oct 31, 1:16 PM Move a message "archive" Oct 31, 1:15 PM File a message "Receipts" Oct 31, 1:14 PM Describe this connection Oct 31, 1:13 PM File a message Refused Oct 31, 1:12 PM Search "newer_than:2d is:unread" Oct 31, 1:10 PM

Connector	Action	Cost	When
Exa	Worked: Search "SF planning commission agenda"	$0.03	Oct 31, 1:17 PM
Gmail	Worked: Write a draft "jenny@example.com"		Oct 31, 1:16 PM
Gmail	Worked: Move a message "archive"		Oct 31, 1:15 PM
Gmail	Worked: File a message "Receipts"		Oct 31, 1:14 PM
GBrain	Worked: Describe this connection		Oct 31, 1:13 PM
Gmail	File a message Refused		Oct 31, 1:12 PM
Gmail	Worked: Search "newer_than:2d is:unread"		Oct 31, 1:10 PM

A log of every action an AI takes with connected accounts

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

See how it works

Brad's MacBook Connected since Oct 31 4m ago

Claude Code Connected since Oct 22 22m ago

Cursor Not connected yet Never

Studio Mac Mini Expired Oct 29 6d ago

Connection	Status	Last used
Brad's MacBook	Connected since Oct 31	4m ago
Claude Code	Connected since Oct 22	22m ago
Cursor	Not connected yet	Never
Studio Mac Mini	Expired Oct 29	6d ago

Access that ends when you say, and on a date you pick

Turn an AI off and its next request 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

A line per tool, per account, every day

When a tool trips, only that tool stops

Raising the line is one click

Move a message

What you get with Tools

The same tools in every AI that speaks MCP

One command line for every connected account

Passwords and API keys never reach the AI

A permission level for every application an AI can reach

A log of every action an AI takes with connected accounts

Access that ends when you say, and on a date you pick

Get Tools

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

What Circuit breakers does

A line per tool, per account, every day

When a tool trips, only that tool stops

Raising the line is one click

Move a message

What you get with Tools

Get Tools