Open Banking APIs List for creating a test banking app

Laetitia Christelle Ouelle
2 min readMar 19, 2024

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Creating a test banking app using an open banking API can be an excellent way to experiment with financial data and transactions in a controlled environment.

But let me explain the context:

As a Flutter developer, I have already worked on several types of mobile applications (e-commerce applications, medical applications, learning applications, etc.), but never on a truly safe and highly secure banking application.
The main problem was with the APIs. If you want to create a real banking application, a REST API built according to the bank’s requirements model is essential. However, the idea of asking a bank in my country that I want their API to create a test application just for my own knowledge made me laugh 🤣.

So I started looking for online open banking APIs and made this article to share them with you because I don’t want you to waste time doing long searches and reading long documentations anymore: Simple.

If you already know them :) okay otherwise the list 👇🏾 :

1- TrueLayer API : TrueLayer is a global open banking platform. Businesses use this open banking network to securely access financial data, enable instant payments and much more.

2- Plaid API : It offers APIs for accessing banking data, authentication, and payment initiation services.

3- Tink API : It offers APIs for accessing financial data, account aggregation, and payment initiation services across Europe.

4- Yodlee Core APIs : Envestnet | Yodlee’s Open Banking infrastructure provides access to financial data through APIs to empower innovators focused on helping their customers realize an Intelligent Financial Life.

5- SalteEdge API : Salt Edge developed an API platform — Open Banking Gateway that allows financial institutions to get instant access to customers’ bank accounts in Europe and beyond for account information and payment initiation purposes, via a single API.

6- FinBox API : It provides APIs for accessing financial data aggregation, bank connectivity, and personal finance management.

7- Railsbank API : Railsbank is a global banking and compliance platform that provides APIs and infrastructure for companies to build, launch and scale financial products and services.

8- Mastercard Open Banking US : It offers APIs for accessing financial data, stock market data, and investment analytics.

These APIs cover a wide range of functionalities, including account aggregation, payment initiation, credit scoring, compliance services, and more. Depending on your project requirements, you can explore these APIs to build innovative financial products, banking apps, and services.

Thanks for reading and I hope you find this article useful.

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Laetitia Christelle Ouelle
Laetitia Christelle Ouelle

Written by Laetitia Christelle Ouelle

Hi! I'm a FullStack Software Engineer (React, NextJs, Flutter, Python, Javascript) ! Also passionate about AR, BlockChain and Google products.

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