Finance APIs for AI agents

Reference guides for the finance apps an AI agent can work with: every endpoint, the permission each one needs, and how to give agents safe, governed access.

Adyen

25 endpoints

The Adyen API is how an app or AI agent takes a payment, captures or refunds it, removes a shopper's saved card, sends a payout, or configures a merchant account.

Updated 23 June 2026 · API Checkout v71
View full guide

Airwallex

25 endpoints

The Airwallex API is how an app or AI agent works with an Airwallex account: accepting a payment, refunding it, paying out to a beneficiary, or reading the balance across currencies.

Updated 23 June 2026 · API 2026-05-29
View full guide

BILL

34 endpoints

The BILL API is how an app or AI agent works with a BILL organization: drafting a bill, adding a vendor, paying a bill, or sending an invoice to a customer.

Updated 23 June 2026 · API v3
View full guide

Brex

33 endpoints

The Brex API is how an app or AI agent works with a company's Brex account: reading settled card and cash transactions, checking account balances, issuing and locking cards, sending transfers to vendors, and managing expenses and receipts.

Updated 23 June 2026 · API v2
View full guide

Chargebee

38 endpoints

The Chargebee API is how an app or AI agent works with a Chargebee site: creating a subscription, charging an invoice, adding a customer, building the product catalog, or issuing a credit note.

Updated 23 June 2026 · API v2
View full guide

Checkout.com

32 endpoints

The Checkout.com API is how an app or AI agent works with a Checkout.com account: requesting a payment, capturing or refunding it, tokenizing a card, raising a payout, or handling a dispute.

Updated 23 June 2026 · API Unified Payments API
View full guide

Expensify

16 endpoints

The Expensify API is how an app or AI agent works with an Expensify account: exporting report and card data, creating expenses and reports, reading and updating policies, and marking reports reimbursed.

Updated 23 June 2026 · API 2026-06-09
View full guide

FreshBooks

39 endpoints

The FreshBooks API is how an app or AI agent works with a FreshBooks account: creating and sending an invoice, recording a payment, adding a client, logging an expense, or tracking time on a project.

Updated 23 June 2026 · API Current
View full guide

GoCardless

28 endpoints

The GoCardless API is how an app or AI agent collects bank payments: creating a customer, setting up a mandate to take Direct Debit, charging a payment, or running recurring billing through subscriptions.

Updated 23 June 2026 · API 2015-07-06
View full guide

Mercury

29 endpoints

The Mercury API is how an app or AI agent works with a Mercury banking account: reading account balances and transaction history, managing recipients, sending money to a saved recipient, and issuing or freezing cards.

Updated 23 June 2026 · API v1
View full guide

Mollie

34 endpoints

The Mollie API is how an app or AI agent works with a Mollie account: taking a payment, refunding a charge, creating a customer, or running recurring billing through mandates and subscriptions.

Updated 23 June 2026 · API v2
View full guide

NetSuite

23 endpoints

The NetSuite API is how an app or AI agent works with a NetSuite account: reading and writing records like customers and items, creating transactions such as invoices and sales orders, and running queries across any record.

Updated 23 June 2026 · API v1
View full guide

Paddle

32 endpoints

The Paddle API is how an app or AI agent runs billing in a Paddle account: creating products and prices, charging a customer through a transaction, managing recurring subscriptions, and refunding a charge as an adjustment.

Updated 23 June 2026 · API 1
View full guide

PayPal

34 endpoints

The PayPal API is how an app or AI agent works with a PayPal business account: creating a checkout order, capturing or refunding a payment, billing a subscriber, sending an invoice, or paying out to many recipients at once.

Updated 23 June 2026 · API v2
View full guide

Plaid

24 endpoints

The Plaid API is how an app or AI agent connects to a person's bank to read transactions, pull account and routing numbers, check balances, fetch identity, or read investments, liabilities, and income.

Updated 23 June 2026 · API 2020-09-14
View full guide

QuickBooks

32 endpoints

The QuickBooks API is how an app or AI agent works with a QuickBooks company's books: creating an invoice, recording a payment, adding a customer or vendor, and querying bills and accounts.

Updated 23 June 2026 · API v3
View full guide

Ramp

30 endpoints

The Ramp API is how an app or AI agent works with a Ramp account: listing card transactions, issuing a virtual card, setting a spend limit, or reading reimbursements and bills.

Updated 23 June 2026 · API v1
View full guide

Razorpay

36 endpoints

The Razorpay API is how an app or AI agent works with a Razorpay account: creating an order, capturing a payment, refunding a customer, running recurring subscriptions, or sending a bank payout through RazorpayX.

Updated 23 June 2026 · API v1
View full guide

Recurly

35 endpoints

The Recurly API is how an app or AI agent runs subscription billing on a site: creating an account, starting or canceling a subscription, collecting or refunding an invoice, and applying a coupon.

Updated 23 June 2026 · API v2021-02-25
View full guide

Sage

26 endpoints

The Sage API is how an app or AI agent works with a Sage Business Cloud Accounting business: listing contacts, raising a sales invoice, recording a payment against a bill, or posting a journal to the ledger.

Updated 23 June 2026 · API v3.1
View full guide

Spendesk

33 endpoints

The Spendesk API is how an app or AI agent works with a company's spend data: reading settlements and payables, pulling the receipts attached to an expense, and listing suppliers, members, and cost centers.

Updated 23 June 2026 · API v1
View full guide

Square

35 endpoints

The Square API is how an app or AI agent works with a Square seller account: taking a payment, refunding a charge, creating an order, updating a customer, or changing the catalog and stock.

Updated 23 June 2026 · API 2026-05-20
View full guide

Stripe

52 endpoints

The Stripe API is how an app or AI agent works with a Stripe account: taking a payment, refunding a charge, creating a customer, or running recurring billing through subscriptions and invoices.

Updated 22 June 2026 · API 2026-05-27.dahlia
View full guide

Wave

15 endpoints

The Wave API is how an app or AI agent works with a Wave business: creating an invoice, recording a customer, posting an accounting transaction, or reading the chart of accounts.

Updated 23 June 2026 · API GraphQL (unversioned)
View full guide

Wise

29 endpoints

The Wise API is how an app or AI agent moves money internationally: pricing a transfer with a quote, adding a recipient, creating and funding a transfer, and reading the currency balances in a multi-currency account.

Updated 23 June 2026 · API v1
View full guide

Xero

33 endpoints

The Xero API is how an app or AI agent works with a Xero organisation: raising an invoice, recording a payment, adding a contact, reconciling a bank transaction, or pulling a Profit and Loss report.

Updated 23 June 2026 · API 2.0
View full guide

Zoho Books

32 endpoints

The Zoho Books API is how an app or AI agent works with a Zoho Books organization: creating and emailing invoices, adding customers and vendors, recording bills and expenses, and applying customer payments.

Updated 23 June 2026 · API v3
View full guide
What is Bollard AI?

Control what every AI agent can do.

Bollard AI sits between a team's AI agents and the apps it runs on. Grant each agent exactly the access it needs, read or write, app by app, and every call is checked and logged.