Credentials stay outside the AI
GBrain stores connected account credentials and performs permitted application calls, returning results to the AI without exposing the underlying password or API key.
GBrain Tools
GBrain Tools is an individual password manager and access layer for connecting services such as Gmail, GitHub, Notion, and Calendar to multiple AI clients without exposing credentials. It provides per-application permissions, access dates, daily limits, command-line or MCP access, and an activity log for each call.
AI access to connected applications
GBrain Tools is a password manager and access layer for AI applications. It lets one person connect services such as Gmail, GitHub, Stripe, Notion, Google Calendar, and web search once, then make those services available to the AI tools and terminals they already use.
Instead of giving an AI a password or API key, GBrain holds the credential and makes the permitted call. The AI receives the result, while permissions, end dates, daily limits, and a record of each action are managed through GBrain. Tools costs $19 per month per person, with cancellation through the billing page and no separate charge based on usage stated on the product page.
Features
Per-application permissions
Set access separately for each AI and application. Examples include four Gmail levels, two Calendar levels, and on/off controls for web search.
Access dates and daily limits
Give each AI an end date, disable it with one action, or configure a daily call limit for individual tools. A limit can stop one tool without stopping others.
Shared connections across AIs
Connect applications once and make them available to Claude, ChatGPT, Claude Code, Codex, Cursor, or another MCP-compatible AI using the same accounts and rules.
Activity log
Review one row per call with the requesting device or AI, connected account, action, permission result, and time. Calls that were refused are recorded as well.
Command-line access
Use a command line for each connected application, including applications without their own command line, and run it directly or through an AI such as Claude Code or Codex.
Use cases
Email and calendar assistance
Connect Gmail and Calendar once, then let an AI search messages, read events, or create drafts according to separately assigned permissions. Sending or changing data can remain unavailable when the selected access level does not allow it.
Controlled developer workflows
Use Claude Code, Codex, Cursor, or the terminal to work with connected services through GBrain's command line while keeping the same application permissions and daily limits used by other AI clients.
Switching between AI tools
Give several AI clients access to the same accounts without creating separate credentials for each one. MCP connections let each client use the shared applications under the rules set in GBrain.
Monitoring automated activity
Set daily limits for tools and review successful or refused actions in one log when an AI is performing repeated searches, message operations, or other connected-service tasks.
Adding an MCP-compatible service
Connect an application not shown in the standard list through its MCP server address, subject to the service being available through that server.
Pros and Cons
Pros
- AI tools can use connected applications without receiving their passwords or API keys.
- Permissions can be set per AI and application, with end dates, one-action revocation, and daily tool limits.
- A single connection can be reused across supported AIs and terminals through MCP or the command line.
- The activity log records successful and refused calls with action details and timing.
- The individual plan covers every application and AI used by one person at a stated flat monthly price.
Cons
- The product page describes a $19-per-month individual license; team workspaces are presented as a separate offering rather than part of Tools.
- Use of applications depends on the available integration or an MCP server address, so the exact setup may vary by service.
- The source materials do not provide independent details about supported application coverage or operational limits beyond the listed controls and integrations.
FAQ
Is GBrain Tools for individuals or teams?
Tools is designed for one person who wants the same connected applications available in the AIs they already use. GBrain also offers a $199-per-month workspace plan for teams, but Tools is the individual product described here.
How do I get started with Tools?
Connect an application such as Gmail or Google Calendar, choose what an AI may do with it, and then connect Tools to an AI through MCP or use the provided terminal command line. The connected AI can use the application on its next call under those permissions.
Does the AI receive my passwords or API keys?
No. GBrain holds the connected account sign-in or API key and makes the permitted call. The AI receives the result rather than the credential.
Which AIs and applications can Tools connect to?
Tools works with Claude, ChatGPT, Claude Code, Codex, Cursor, your terminal, and any AI that supports MCP. Applications can be connected through an MCP server address, including one not already listed.
How can I control and review AI access?
You can set an access level for each AI and application, add an end date, turn access off with one action, and set a daily limit for each tool. Every call is recorded, including refused calls.
Quick Facts
- Category
- AI security and productivity tool
- Primary user
- One person using multiple AI tools
- Supported AI access
- Claude, ChatGPT, Claude Code, Codex, Cursor, terminal, and MCP-compatible AI
- Example applications
- Gmail, GitHub, Stripe, Notion, Google Calendar, and web search
- Pricing
- $19 per month per person for Tools
- Access model
- Credentials held by GBrain; AI receives permitted call results
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