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Top 4 API Use Cases & Examples in the Finance Sector in 2024

API has proven to be beneficial for companies as they :

  • Increase access to data.
  • Increase integration among different companies & devices.
  • Increase innovation.
  • Improve customer experience. 

APIs are considered to be mission-critical by more than 90% of executives. However, the financial sector has been slow to adopt API as part of its digital transformation (see Figure 1). 

This trend appears to be changing as the number of API calls made by the financial sector increased by 125% in 2020. This article provides financial industry executives with a guidebook for integrating APIs into their workflow. As a result, we provide use cases and examples to illustrate the possible investment areas of APIs in finance. Then we discuss the difficulties in implementing APIs and provide solutions to these challenges.

Figure 1. API traffic in 2020 

Source: Google Cloud

1- Banking

The number of APIs used in banking is expected to double by 2027 compared to 2022 levels (see Figure 2). 

Figure 2. Relative and absolute growth of APIs in the banking industry.

Source: McKinsey

APIs can benefit banking by:

  • Increasing integration between banks and other applications. 
  • Improve the bank’s digital transformation by increasing connectivity
  • Removing unnecessary bureaucratic banking procedures 
  • Provide products that are personalized for customers. 

The use of open API has led to the creation of open banking. Open banking is the usage of open APIs, which lets outside developers create programs and services based on the financial institution. The usage of open banking has increased considerably in the past few years. To understand more about open banking, read Open Banking APIs: Benefits, Opportunities & Applications


BBVA provides different banking-related APIs such as:

  • Mortgage API: This API enables offering mortgage financing to customers without them leaving your digital platform. 
  • Auto loan API: This API allows auto loan financing integration for car dealerships and brands in their platform.
  • Business collection API: This API enables real-time payment confirmation, which can streamline collection processes. 

2- Private equity & venture capitals 

Private equity and VC firms can use APIs by:

  • Retrieving information about current or historical holdings, which can be categorized based on industry and/or geography. 
  • Retrieving information about realized investments
  • Retrieving information about new and historical purchases of other PEs.
  • Gathering investment from retail investors

All this information can be gathered quickly and efficiently in a standardized format such as CSV or JSON. 

Moonfare private equity API

Moonfare, a DTC digital PE platform, offers an API that integrates with the fintech company’s infrastructure and user interface, allowing them to invest in private equity funds (see Figure 3).

Figure 3. Moonfare private equity API

Source: Moonfare

3- Insurance 

APIs can facilitate digital transformation in the insurance industry. They can be used to:

  • Increasing efficiency in claim management by improving internal and external system integration that can lead to faster claims processing
  • API can improve partner integration as insurance companies can provide access to their APIs, improving data sharing. 
  • New technology integration is possible with API. For example, IoT devices can provide information about an accident to the insurance provider using API. 

Lemonade insurance API

Lemonade is an insurtech company. its insurance API allows different types of application service providers to integrate insurance alongside their main product, such as:

  • E-commerce, 
  • Property management companies, 
  • IoT providers, 
  • And financial advisor applications, 

Developers can integrate Lemonade insurance in 2 different ways. :

  • Adding one line of code which adds a widget to your page, enabling the Lemonade insurance bot to collect and handle the process
  • Using lemonade REST API in order to have full control over the workflow. 

You can find our data-driven list of insurance APIs here

4- Trading

API can be used to make trades: 

  • Automatable: The trades can be made automatically when the predefined conditions are met. This result in faster execution and removes human emotion from the trade. 
  • Customizable: API can be customized for different trading strategies, and actions such as stop loss can be programmed into it. Additionally, trading strategies with API can be backtested and optimized for the best risk-to-return ratio. 

Interactive Brokers Trader Workstation (TWS) API

Interactive Brokers(IB) TWS API allows for automated trading strategies. Real-time market data and account balance can be requested using this API. Developers can connect their trading applications to this API.  You can watch the following youtube video to understand more about IB TWS.

Challenges of financial APIs


Security is a top concern in the financial sector, as security breaches can lead to financial and reputational losses. 94% of API developers have experienced security incidents in the production of APIs in 2022-2021, and security is the top concern regarding API development among IT executives ( see Figure 4).

Figure 4. Security is the top challenge in API utilization

Source: Fintech Future

Recommendation: Conduct API security testing to find and prevent bugs and defects that can lead to security breaches. 


PULSE, an automated API testing tool based on artificial intelligence, is made available by Testifi. PULSE can reduce the time and money needed to test APIs by +50%. Leading businesses, including Amazon and BMW, use Testifi’s services.

Lack of unified standard

Even though the API has become more common, they are not standardized across the industry. There is no standard like ISO20022 when it comes to API development for the financial sector. This has led to different naming conventions and field sizes. 

Recommendation: The lack of standardization might improve in the coming years, but until it reaches a unified state, financial companies can use 3rd party service providers for integrating API data. Additionally, if your organization is looking to develop its own API, it is better to follow the guidelines provided by the banking industry architecture network (BIAN) as they are trying to make a unified standard for banking infrastructure. 

If you are looking to integrate API into your business, you can reach us :

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Cem Dilmegani
Principal Analyst
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Cem Dilmegani
Principal Analyst

Cem has been the principal analyst at AIMultiple since 2017. AIMultiple informs hundreds of thousands of businesses (as per similarWeb) including 60% of Fortune 500 every month.

Cem's work has been cited by leading global publications including Business Insider, Forbes, Washington Post, global firms like Deloitte, HPE, NGOs like World Economic Forum and supranational organizations like European Commission. You can see more reputable companies and media that referenced AIMultiple.

Throughout his career, Cem served as a tech consultant, tech buyer and tech entrepreneur. He advised businesses on their enterprise software, automation, cloud, AI / ML and other technology related decisions at McKinsey & Company and Altman Solon for more than a decade. He also published a McKinsey report on digitalization.

He led technology strategy and procurement of a telco while reporting to the CEO. He has also led commercial growth of deep tech company Hypatos that reached a 7 digit annual recurring revenue and a 9 digit valuation from 0 within 2 years. Cem's work in Hypatos was covered by leading technology publications like TechCrunch and Business Insider.

Cem regularly speaks at international technology conferences. He graduated from Bogazici University as a computer engineer and holds an MBA from Columbia Business School.

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