- USER SETUP
- SPENDING
- HUMAN REVIEW
- COMPLETION
Short answer
How can I automate employee onboarding and card issuance?
You tell your AI to add a new user and create a card, and it handles the Brex side of things. You'll get new users added and virtual cards ready for use immediately.
The results.
Where your actions land.
The AI handles the technical execution in Brex, leaving you with these outcomes.
USER SETUP
New Brex users
The AI uses brex_create_user to add people to your account. They get access to the platform without you clicking through menus.
SPENDING
Active virtual cards
The AI issues cards via brex_create_card. You get immediate virtual spending capacity for your new hires.
HUMAN REVIEW
Manual approvals
The AI won't change your global Brex settings or delete existing users. You stay in control of your high-level account permissions.
COMPLETION
Ready to spend
Once the commands finish, your new hires are in the system and their cards are live. The setup is done.
The workflow
What your AI does when the request arrives.
The AI translates your plain English instructions into specific Brex API calls.
Add the hire
The AI takes the name and email you provide and registers them in your Brex account.
brex_create_userIssue the card
After the user is set up, the AI generates a virtual card for them.
brex_create_cardSet limits
The AI can assign specific spending parameters to the new virtual card.
brex_create_cardConfirm setup
The AI reports back once the user is active and the card is ready for use.
brex_create_userbrex_create_card
Try it
Copy these to start.
Use these prompts to trigger the Brex actions.
Starting points
Swap out the names and emails for your actual new hire details.
Brex Connector
You're all set. Choose your MCP client and follow the setup instructions.
https://edge.vinkius.com/vk_preview_UXa2sU0JvoscQWRF41Zv6b0C2qlmTQmZVMAci9J1/mcpClaude Desktop
Follow the steps below to connect in seconds.
- 1In Claude Desktop, open Settings → Connectors.
- 2Click “Add custom connector” and paste the connector link above as the remote MCP server URL.
- 3Click Add and start a new chat — Brex capabilities are ready to use.
{
"mcpServers": {
"brex-mcp": {
"url": "https://edge.vinkius.com/vk_preview_UXa2sU0JvoscQWRF41Zv6b0C2qlmTQmZVMAci9J1/mcp"
}
}
}Add a new user to Brex for Jordan Smith with the email jordan@company.com.
Create a virtual card for Alex Rivera in Brex with a $500 limit.
Onboard Sarah Chen (sarah@company.com) and give her a Brex card for travel expenses.
Set up a new Brex user for Mike Jones and immediately issue him a $1000 virtual card.
Claude
ChatGPT
Cursor
VS Code
Windsurf
Claude Code
JetBrains
Cline
Start here
Connect Brex once, then ask.
Click the link to connect your account. Your credentials stay encrypted, and you can start using these tools in your favorite AI client immediately.
Connect Brex to your AIFAQ
How this task behaves.
- 01
Can the AI delete existing employees?
No. The AI can only create new users and cards.
- 02
Does the AI manage my Brex bank account details?
No. The AI only interacts with user creation and card issuance.
- 03
Can I set different spending limits for different cards?
Yes, you can specify the limit when you ask the AI to create a card.
- 04
Will the AI automatically invite people to Slack too?
No. This specific Brex connection only handles Brex-specific actions.
- 05
Can the AI change my company's overall Brex settings?
No. The AI is limited to the specific tools for creating users and cards.
More questions about Brex? See everything the Brex Connector can do
Connect Brex to Claude, Cursor, ChatGPT & more
