Teller API
A single API to connect your app with any bank's account
Teller API launched on June 15, 2017 with 308 votes, #66 of 3,107 launches that month and more than 95% of that year's launches. The site was still online in September 2026, 9 years on.
In plain words
Teller API is a development tool that provides a unified interface for connecting applications to multiple banks' accounts. It simplifies bank integration by offering a single API instead of requiring developers to work with individual bank systems. The service is designed for developers and fintech companies that need to access banking functionality across various financial institutions.
written from the facts on this page · September 2026
From the sources
The API for your bank account
Teller lets users connect their accounts in seconds, and you verify account ownership, ACH details, balances, and transactions with ease. Users that connect their accounts with Teller stay connected for longer. Eliminate churn and customer support workload caused by brittle bank connections forever. Build more compelling apps and services by building on APIs that can provide live, real-time data and instant payments using Zelle. Integrate in an afternoon with our simple yet powerful API, comprehensive documentation and guides. Language bindings are available in a variety of programming languages as well as iOS & Android SDKs for Teller Connect. With Sidecar switching to Teller is reduced to…from teller.io
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