Build Smarter, Scale Faster
Build Smarter, Scale Faster
Leverage powerful pricing APIs to instantly retrieve best execution results, validate eligibility, and manage lock requests without manual intervention.
Integrate Seamlessly Across Systems
Connect Optimal Blue to your LOS, CRM, or custom applications with minimal disruption, thanks to flexible endpoints and standardized data formats.
Monitor Events With Webhooks
Stay in sync with real-time updates using webhooks for lock changes, concessions, and profile updates.
Stay Ahead With Real-Time Details
Optimal Blue’s APIs mirror all UI functions, enabling full automation from quoting to post-lock changes.
Automate End-to-End Loan Life Cycle Workflows
Streamline initial-lock, post-lock, trading workflows, and more to save time and reduce costs.
Connect With Partners
Integrate in real time with top online advertising and eQuoting solutions like LendingTree, Zillow, and more to expand reach and streamline lead flow.
Built for Innovation
Optimal Blue’s API-first strategy isn’t just about integration – it’s about enabling innovation. Developers can build new experiences, automate complex workflows, and deliver value faster.
Search Request Average < 1 second
Optimal Blue’s APIs are engineered for speed, with search requests averaging under one second.
Millions of API Calls, Seamlessly Handled
Optimal Blue’s architecture is built for scale processing millions of calls daily with consistent uptime and performance.
API-FIRST ARCHITECTURE
Optimal Blue’s platform is built with developers in mind. Our APIs are designed to be intuitive, secure, and scalable enabling seamless integration into your tech stack.
EXPLORE AND TEST IN DEVELOPER PORTAL
From pricing to pipeline management, Optimal Blue offers a comprehensive suite of APIs to support every stage of the mortgage process. Access interactive documentation, sample code, and sandbox environments to explore APIs
Latest Innovations
Business Intelligence APIs
Bring Market Intelligence Into Your Workflow.
The Business Intelligence APIs let you embed powerful data tools from the 16 Mortgage Market Rate Indices from Optimal Blue directly into your analytics or user-facing platforms for seamless, real-time insights.
Product & Pricing APIs
Customize Pricing and Locking Workflows
Product and Pricing APIs let you generate and display eligible products and pricing in any format. They also support loan creation, locking, post-lock changes, and secondary desk operations.
Loan Trading APIs
Streamline Loan Trading
Loan Trading APIs unlock full access to Resitrader’s workflows and data modules, enabling seamless integration into your trading operations.
Resources
Maximize Profitability and Boost Efficiency
Discover the six essential components of a PPE.
Optimal Blue Key to Alliant Credit Union’s Mortgage Business Transformation
See how a leading credit union transformed its mortgage business by implementing a modern, integrated technology platform.
CPO Erin Wester on Optimal Blue’s API-first evolution
On the HousingWire Daily podcast, Erin Wester discusses AI, API-first technology and how Optimal Blue is constantly evolving to serve the needs of lenders.
Choosing the Right Tech Partner: Modern Technology. Proven Experience.
Explore how Optimal Blue’s AI and automation solutions drive measurable ROI.
