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MCP Integrations Brex
MCP & AI Agent Integration

Brex
automation.

5 AI agent actions for Brex — callable from any MCP-compatible runtime, Claude, Cursor, or Cerebral OS workflow. Use Brex to process payments, generate invoices, and manage financial workflows without human intervention. Full governance, audit trail, and dry-run safety on every execution.

Connect Brex free Browse all integrations →
No credit card required
Live in production environments
<200ms median execution
Dry-run before production
Execution trace
live
5
actions
100%
governed
<200ms
latency
5
AI agent actions
2
Read operations
3
Write operations
0
High-risk actions (approval gated)
Finance & Payments Brex is a Finance & Payments integration — use it to automate payments, invoicing, and financial operations from any AI agent or MCP-compatible runtime.
Actions

What you can do
with Brex.

Every action below is available as an MCP tool and a verb in Cerebral OS — callable from any AI agent, Claude, Cursor, Windsurf, or your own runtime via the BYOA API. All executions are governed, audited, and dry-run safe.

List Transactions for Primary Card Account
brex:list_transactions_for_primary_card_account
Lists all settled transactions for the primary card account. See the docs here.
Read Low risk
List Transactions for Selected Cash Account
brex:list_transactions_for_selected_cash_account
Lists all transactions for the specified cash account. See the docs here.
Read Low risk
Create Card
brex:create_card
Creates a new card. See the docs here.
Write Medium risk
Invite User
brex:invite_user
Invites a new user as an employee. See the docs here.
Write Medium risk
Set Limit for User
brex:set_limit_for_user
Sets the monthly limit for a user. See the docs here.
Write Medium risk
MCP & Runtime API

Call Brex
from any AI agent.

Any AI agent — Claude, Cursor, LangChain, AutoGen, or your own — can call Brex actions through the Cerebral OS Runtime API. Governance, credentials, and audit trail fire automatically.

brex:list_transactions_for_primary_card_account READ
# Call via Runtime API
curl
-X POST \
  "https://api.cerebralos.com/v1/runtime/actions/run"
  -H "X-API-Key: YOUR_KEY" \
  -d '{
    "verb": "brex:list_transactions_for_primary_card_account",
    "args": {},
    "execution_id": "agent-001"
  }'
brex:create_card WRITE
# Dry-run first — no production risk
curl
-X POST \
  "https://api.cerebralos.com/v1/runtime/actions/run"
  -H "X-API-Key: YOUR_KEY" \
  -d '{
    "verb": "brex:create_card",
    "args": {},
    "execution_id": "agent-001",
    "metadata": {"dryRun": true}
  }'
Get your Runtime API key at app.cerebralos.com/signup — 1,000 free executions, no credit card required.
AI agent examples

What your AI agent
can do with Brex.

Real patterns your AI agent can execute via MCP or the Runtime API. Every action governed, dry-run safe, and fully audited.

Trigger
AI agent needs Brex data
Call brex:list_transactions_for_primary_card_account via MCP or Runtime API
AI processes result and takes next action
Full execution logged to audit trail automatically
Trigger
Workflow needs to write to Brex
Dry-run validates brex:create_card before execution
Approval gate fires if risk level is high
Action executes with full governance — logged, audited, reversible
Trigger
Payment or billing event
Sync to accounting system
Generate invoice
Alert finance team
How it works

Every Brex action
governed end-to-end.

Cerebral OS isn't a connector. It's the execution layer that sits in front of Brex — adding governance, dry-run safety, and a full audit trail to every operation.

Governance first
Every verb carries a risk classification. High-risk writes require explicit approval gates before they execute in production.
Dry-run safe
Simulate any Brex action before it touches production. See exactly what would happen before a single real call is made.
Immutable audit trail
Every Brex action is logged — what ran, what changed, who approved it, when it happened. Full history on every verb, forever.
Connect with

Brex works best
alongside these.

Build multi-step workflows that connect Brex to the rest of your stack. All governed. All audited.

Stripe Quickbooks Xero Accounting Api Hubspot Paypal
Brex integration

Start free.
No credit card required.

Start free with 1,000 runs — no credit card required. Connect Brex in minutes, dry-run every action before it touches production, full audit trail on everything.

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