The Best API Solution in Real Estate Tech Today

The Spark® API and our RESO® Web API standardize MLS data while streamlining and automating the data licensing process for the MLS, empowering developers to create best-of-class apps and websites for brokers and agents.

Future-Proof Is Freedom of Choice and Value for All

MLS Administrator

Gain full data portability and permission-based content control.



Build innovative products on a world-class API



Gain access to better products & fully integrate with the Flexmls experience.


Spark API

Future-Proof your MLS with the Industry’s breakthrough and leading RESO Web API. In addition to empowering third-party software innovation, the Spark API is the tech-backbone of Flexmls native mobile apps and the competitive edge for so many valuable Flexmls-unique functions.

Spark Datamart: Your Data Destination

The Spark Datamart completely automates the data licensing process, bringing MLS-created Data Plans (VOW, IDX, etc.), licensing terms, pricing, approvals, and usage tracking together in one secure, convenient online space.


Ready to Start Building?

Create a Website Using the Spark API Today!

The FBS Family of Products: Made with Love.

As powerful independently as they are bundled together, the FBS product suite (Flexmls Platform, Launch Dashboard, Spark® API, FloPlan™ System, and Flexmls IDX) powers markets by enabling MLSs to beautifully showcase their value proposition while empowering real estate professionals with innovative software.