# Mastercard Open Finance Data
source: https://developer.mastercard.com/open-finance-data/documentation/index.md

Mastercard Open Finance Data enables you to access your customers' financial
data from thousands of banks and financial institutions through a single,
secure API. You can retrieve account information, balances, transactions and
account holder details without integrating separately with each institution.
Built on Mastercard's global open finance platform, the API helps you build
personalized financial services, improve decision-making and deliver seamless
customer experiences.

#### API Basics {#api-basics}

Authentication, encryption, environments and other essentials.

[Learn more →](https://developer.mastercard.com/open-finance-data/documentation/api-basics/index.md)

#### Quick Start Guide {#quick-start-guide}

Learn key concepts and the steps to integrate with the API.

[Learn more →](https://developer.mastercard.com/open-finance-data/documentation/quick-start-guide/index.md)

#### Consent Management {#consent-management}

Understand how customers grant and manage data-sharing consent.

[Learn more →](https://developer.mastercard.com/open-finance-data/documentation/consent-management/index.md)

## Use Cases {#use-cases}

#### Account Opening {#account-opening}

Instantly confirm bank account ownership, with no paperwork or waiting.

[Learn more →](https://developer.mastercard.com/open-finance-data/documentation/use-cases/account-opening-guide/account-opening-guide/index.md)

#### Direct Debit {#direct-debit}

Verify account details to set up Direct Debit quickly and securely.

[Learn more →](https://developer.mastercard.com/open-finance-data/documentation/use-cases/direct-debit/index.md)

#### Lending and Financial Management {#lending-and-financial-management}

Access transaction data to build credit models and financial tools.

[Learn more →](https://developer.mastercard.com/open-finance-data/documentation/use-cases/lending-and-financial-management/index.md)

#### Smart Data and Loyalty {#smart-data-and-loyalty}

Turn transaction data into insights that drive engagement and rewards.

[Learn more →](https://developer.mastercard.com/open-finance-data/documentation/use-cases/smart-data-and-loyalty/index.md)

## User Flows {#user-flows}

#### Managed Flows {#managed-flows}

Launch a journey using screens that Mastercard hosts for you.

[Learn more →](https://developer.mastercard.com/open-finance-data/documentation/user-flows/managed-flows/index.md)

#### Self-Hosted Flows {#self-hosted-flows}

Build and control your own UI using Mastercard's APIs.

[Learn more →](https://developer.mastercard.com/open-finance-data/documentation/user-flows/self-hosted-flows/index.md)

#### Customizing Managed Flows {#customizing-managed-flows}

Apply your branding to the flow screens with the Theming API.

[Learn more →](https://developer.mastercard.com/open-finance-data/documentation/user-flows/customization/index.md)

## Features {#features}

#### Balance Check {#balance-check}

Run an on-demand check to retrieve an account's latest balance.

[Learn more →](https://developer.mastercard.com/open-finance-data/documentation/features/balance-check/index.md)

#### One-to-Many Access Model {#one-to-many-access-model}

Serve multiple third parties through a single integration.

[Learn more →](https://developer.mastercard.com/open-finance-data/documentation/features/one-to-many-access-model/index.md)

#### Transaction Enrichment {#transaction-enrichment}

Add categorization and structure to raw transaction data.

[Learn more →](https://developer.mastercard.com/open-finance-data/documentation/features/transaction-enrichment/index.md)

## Get Building {#get-building}

#### API Reference {#api-reference}

Full documentation for all Mastercard Open Finance Data endpoints.

[Learn more →](https://developer.mastercard.com/open-finance-data/documentation/api-reference/index.md)

#### Code and Formats {#code-and-formats}

Reference for the error codes and data formats used by the API.

[Learn more →](https://developer.mastercard.com/open-finance-data/documentation/code-and-formats/index.md)

#### Testing and Integration {#testing-and-integration}

Test banks, Postman collections and a reference application.

[Learn more →](https://developer.mastercard.com/open-finance-data/documentation/testing-and-integration/index.md)

#### Webhooks {#webhooks}

Receive notifications when data is refreshed or consent changes.

[Learn more →](https://developer.mastercard.com/open-finance-data/documentation/event-notifications/index.md)

#### UX Design Guidelines {#ux-design-guidelines}

Design best practices for the account connection experience.

[Learn more →](https://developer.mastercard.com/open-finance-data/documentation/ux-design-guidelines/index.md)

#### Support {#support}

Find answers to frequently asked questions and learn how to get help.

[Learn more →](https://developer.mastercard.com/open-finance-data/documentation/support/index.md)

### How It Works {#how-it-works}

By integrating the Open Finance Data API into your application, you
can guide your customers through securely sharing their financial data. You can
then use this data to provide personalized services.

![how-it-works](https://static.developer.mastercard.com/content/open-finance-data/documentation/img/how-mcobs-works_b.png)

Mastercard provides a managed UX flow that enables your customers to consent
to and authorize financial data sharing. You can configure this experience or replace it
with your own self-hosted flow.

Your application prepares the customer for data
sharing and initiates the connection to the consent flow using the Open
Finance Data API. The customer can then authenticate with their bank to authorize access.

Once the customer grants consent, Mastercard collects their financial data and
makes it available to your application. You receive updated account and
transaction data at regular intervals without customer interaction, provided
the consent and access tokens remain valid.