Finance & Accounting

Connect Brex to Your AI Agents

Enable your Wkil agents to log expenses, manage budgets and spend limits, and issue corporate cards through Brex.

Authentication: OAuth 2.0

Build with Brex

What you can do

Log and track expenses
Set up budgets, spend limits, and departments
Issue new corporate cards

Available capabilities may vary by authentication and workspace configuration.

Actions supported by the connector

84 verified tools

Create Expense

Log a new expense for review or reimbursement.

Create Budget

Set up a new spend budget for a team or project.

Create Card

Issue a new corporate card.

Archive Spend Limit

Archive a spend limit that's no longer needed.

Create Department

Add a new department for organizing spend.

List Expenses

List expenses logged on the account.

List Cards

List corporate cards issued on the account.

List Budgets

List spend budgets configured on the account.

Get Card Transactions

Retrieve transactions charged to a specific card.

Update Expense

Update details on an existing logged expense.

Show all actions

Create User

Add a new user to the Brex account.

List Vendors

List vendor records configured on the account.

View all verified tools (search)

Add Webhook Group MembersArchive BudgetArchive Spend LimitCreate BudgetCreate Spend Limit (Budget V1)Create CardCreate DepartmentCreate Document Upload for ReferralCreate ExpenseCreate Custom FieldCreate Field ValuesCreate LocationCreate Referral RequestCreate Spend LimitCreate Job TitleCreate UserCreate VendorCreate Webhook GroupCreate Webhook SubscriptionDelete FieldDelete Field ValuesDelete VendorGet Account StatementsGet Budget DetailsGet Card DetailsGet Card ExpenseGet Card NumberGet Card TransactionsGet Company Cash AccountsGet Company DetailsGet Department By IDGet ExpenseGet Field By IDGet Field Value By IDGet Legal EntityGet Location By IDGet Referral By IDGet Spend Limit By IDGet Spend LimitsGet Title by IDGet Transaction by IDGet Card TransactionsGet Transactions by Amount RangeSearch Transactions by DescriptionGet User LimitGet User ProfileGet Vendor By IDGet Webhook GroupGet Webhook SubscriptionList Budget ProgramsList BudgetsList Card AccountsList CardsList Card StatementsList DepartmentsList ExpensesList Field ValuesList Legal EntitiesList LocationsList ReferralsList Job TitlesList TransfersList TripsList UsersList VendorsList Webhook Group MembersList Webhook GroupsList Webhook SecretsList Webhook SubscriptionsCreate Receipt MatchCreate Receipt Upload for ExpenseSet User LimitTransfer CardUpdate BudgetUpdate Spend Limit (V1)Update Card LimitsUpdate Card StatusUpdate ExpenseUpdate FieldUpdate Field ValuesUpdate Spend LimitUpdate UserUpdate VendorUpdate Webhook Subscription

Practical agent use cases

An agent logs a travel expense as soon as a receipt is submitted.
An agent sets up a new department budget when a team is created.

How it works with Wkil

1
Choose the integration
Add Brex to your agent from inside the Wkil platform.
2
Grant the permissions it needs
Define precisely what the agent can access and perform.
3
Test, then run it
Test actions before they go live, with human approval where needed.

Permissions always stay in your control — you can scope access and require human approval before any sensitive action.

Related integrations

FAQ

Does this connect through my own Brex account?

Yes — authentication uses Brex's OAuth flow, so access is scoped to what you authorize.

Can an agent issue a card on its own?

Card issuance can require human approval before it runs, just like any other financial action.