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BMO Account Information API

Retrieves account details, balances, and transaction information for Online Banking for Business accounts, secured with OAuth 2.0 and a client API key on BMO's IBM API Connect open-banking gateway.

BMO Account Information API is one of 11 APIs that BMO publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

Tagged areas include Account Information, Balances, and Transaction. The published artifact set on APIs.io includes an OpenAPI specification and API documentation.

This API exposes 3 operations across 3 paths, organized into 2 resource areas, and defines 75 schemas. It is described by OpenAPI 3.0.0, at version 5.3.0.

Requests are made against a single base URL, https://sandbox-open-api.bmo.com/open-banking/commercial-sb.

3 operations 3 paths 75 schemas 3 GET

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.0.0
API Version
5.3.0
Base URL
https://sandbox-open-api.bmo.com/open-banking/commercial-sb
Authentication
API Key, OAuth 2.0
Resource Areas
2

Authentication & Security 2

BMO Account Information API declares 2 security schemes for authenticating requests. An API key is passed in the header as x-api-key (api-key-1). It supports OAuth 2.0 (OAuth) using the authorizationCode flow, exposing 1 scope. By default, every request must be authenticated.

Paths & Operations 3

Across 3 paths, the API surfaces 3 operations — 3 GET. They span 2 resource areas: Account Information, Account Transactions. Each is listed below with its method, path, parameters, and response codes.

Account Information 2

Query all information for a set of accounts provided in the payload

GET
/accounts
Search for Authorized Accounts
Search for Accounts 8 params → 200400401403404415429500
GET
/accounts/{accountId}
Get an Account
Get an Account 3 params → 200400401403404415429500
Account Transactions 1

Search for account transactions

GET
/accounts/{accountId}/transactions
Search for Account Transactions
Search for Account Transactions 8 params → 200206400401403404415429

Schemas 75

The contract defines 75 schemas that model the data the API accepts and returns. The most detailed are Transaction (19 properties), OpenOrder (15 properties), DebtSecurity (12 properties), MutualFundSecurity (7 properties). Each schema is shown below with its type and property counts.

ContentTypes
string
Types of document formats. (Suggested)
HateoasLink
object
3 properties 1 required
PageMetadataLinks
object
2 properties
PageMetadata
object
3 properties
PaginatedArray
object
To be used as a mixin using "allOf"
2 properties
Account
An account object with limited details returned in the search for accounts operation.
AccountDetails
An account object that adds additional detail parameters to the basic Accounts object, this is used in Get an Account operation.
Accounts
An instance of the getAccounts types with limited details.
GetAccount
An instance of an account with full details.
GetAccounts
An optionally paginated array of accounts.
Currency
object
Currency information if it is different from Account entity
3 properties
DebtSecurity
object
12 properties
DepositAccount
Deposit accounts will have following fields in FiAttributes - PreviousBalance, OpenDate, StatementName, 1DayFloat, 2orMoreDaysFloat, AccruedInterestMTD, Projec…
DepositTransaction
Deposit Transaction will have following fields in FiAttributes - Posted, Pending, ValueDate
Error
object
An error entity which can be used at the API level for error responses or at the account level to indicate a problem specific to a particular account.
2 properties
FiAttribute
object
Financial platform provider-specific attribute
2 properties
FiPortion
object
2 properties
InvestmentAccount
InvestmentBalance
object
6 properties
InvestmentTransaction
Investment Transaction will have following fields in FiAttributes - Posted, IssueDate, MaturityDate, InterestRate, OriginalAmount, CurrentValue, Disposition
LoanAccount
Loan accounts will have following fields in FiAttributes - BorrowerName, FacilityName, OutstandingBal, OutstandingBalLoanCurr, MaturityDate
LoanTransaction
LocAccount
Loc accounts will have following fields in FiAttributes - StatementBalance
LocTransaction
Line of Credit Transaction will have following fields in FiAttributes - Posted, Pending, ValueDate
MutualFundSecurity
object
7 properties
OpenOrder
object
15 properties
OptionSecurity
object
5 properties
OtherSecurity
object
1 property
PaymentDetails
object
Breakdown of payment details
6 properties
Portion
object
2 properties
StockSecurity
object
6 properties
SweepSecurity
object
4 properties
TaxLot
object
6 properties
Transaction
object
19 properties 8 required
Transactions
Optionally paginated array of transactions
AccountType
string
AnnuityProductType
string
AnnuityValueBasis
string
AnnualIncreaseType
string
AssetClass
string
BalanceType
string
ASSET (positive transaction amount increases balance) LIABILITY (positive transaction amount decreases balance)
CallType
string
Type of next call (CALL, PUT, PREFUND, MATURITY)
CompoundingPeriod
string
DAILY, WEEKLY, BIWEEKLY, SEMIMONTHLY, MONTHLY, SEMIANNUALLY, ANNUALLY
CouponMatureFrequency
string
When coupons mature (MONTHLY, QUARTERLY, SEMIANNUAL, ANNUAL, OTHER)
DebitCreditMemo
string
DebtClass
string
Classification of debt (TREASURY, MUNICIPAL, CORPORATE, OTHER)
DebtType
string
Debt type (COUPON, ZERO)
DepositTransactionType
string
CHECK, WITHDRAWAL, TRANSFER, POSDEBIT, ATMWITHDRAWAL. BILLPAYMENT, FEE, DEPOSIT, ADJUSTMENT, INTEREST, DIVIDEND, DIRECTDEPOSIT, ATMDEPOSIT, POSCREDIT
IncomeType
string
Type of investment income - CGLONG (capital gains-long term), CGSHORT (capital gains-short term), MISC
InterestRateType
string
Inv401kSourceType
string
Source of money. PRETAX, AFTERTAX, MATCH, PROFITSHARING, ROLLOVER OTHERVEST, OTHERNONVEST
InvestmentBalanceType
string
InvestmentTransactionType
string
PURCHASED, SOLD, PURCHASEDTOCOVER, ADJUSTMENT, PURCHASETOOPEN, PURCHASETOCLOSE, SOLDTOOPEN, SOLDTOCLOSE, INTEREST, MARGININTEREST, REINVESTOFINCOME, RETURNOFCA…
Iso4217Code
string
The ISO 4217 code of the foreign currency
LoanPaymentFrequency
string
WEEKLY, BIWEEKLY, TWICEMONTHLY, MONTHLY, FOURWEEKS, BIMONTHLY, QUARTERLY, SEMIANNUALLY, ANNUALLY, OTHER
LoanTransactionType
string
PAYMENT, FEE, ADJUSTMENT, INTEREST
LocTransactionType
string
CHECK, WITHDRAWAL, PAYMENT, FEE, ADJUSTMENT, INTEREST
MutualFundType
string
Mutual fund type
OptionType
string
OrderDuration
string
This order is good for DAY, GOODTILLCANCEL, IMMEDIATE
OrderType
string
PaymentFrequency
string
DAILY, WEEKLY, BIWEEKLY, SEMIMONTHLY, MONTHLY, SEMIANNUALLY, ANNUALLY
PeriodCertainGuarantee
string
PositionType
string
LONG, SHORT
Secured
string
How the option is secured
SecurityIdType
string
Security identifier type
SecurityType
string
StockType
string
TransactionReason
string
Reason for this transaction; CALL (the debt was called), SELL (the debt was sold), MATURITY (the debt reached maturity)
TransactionStatus
string
UnitType
string
message
string
resultDetail
object
3 properties
errorResult
object
4 properties 2 required
result
object
4 properties 2 required

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

bmo-account-information-openapi.json Raw ↑

Other APIs BMO publishes across the network.

BMO Account Validation API
BMO ACH Payments API
BMO Wire Payments (U.S.) API
BMO Wire Payments (Canada) API
BMO EFT Payments API
BMO Instant Payments (Interac) API
BMO Image Retrieval API
BMO Authorize & Token API
BMO Client Data Encryption Key API
BMO Push Notification API
Where this information came from

This is an independent, third-party profile of BMO Account Information API, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.

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