Application Programming Interfaces (APIs)
Powerful data and insights for the mortgage industry
Unlock business potential with real-time data
Discover new opportunities to automate processes, improve accuracy, and streamline workloads where it can benefit you most by integrating our data into your business. Our application programming interfaces (APIs) can help enhance business efficiency and borrower experience. Developers can get started by logging in to the Developer Portal.
Business Partner APIs
Our approved sellers and servicers, and others who conduct mortgage-related business with Fannie Mae, can access information on eligibility, loan pricing, appraisals, loan servicing, and more.
Public APIs
Open to anyone, our Public APIs offer access to Fannie Mae’s publicly available data related to economics, housing, loan performance, and more.
Boost productivity
Automate tasks to get more done with real-time data.
Deploy fast
Save time with industry standard integrations.
Faster decision-making
Quickly visualize data, identify trends, and find actionable insights.
Optimize workflows
Get the data you need at the right time for your processes.
Featured
Accelerate innovation with some of our most used business partner APIs.
Loan Lookup
Determine in real time if a loan is owned by Fannie Mae for the purpose of identifying eligibility for underwriting and/or appraisal flexibilities.
Loan Pricing
Combine multiple pricing elements into one, streamline your process, and help ensure you have transparent and current pricing.
AMI Lookup and HomeReady® Evaluation
Speed up pre-qualification and reduce manual steps. Identify HomeReady-eligible borrowers earlier to offer flexible, affordable loan options right from the start.
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Review our Business Partner APIs based on the stages of the loan lifecycle.
AMI Lookup and HomeReady® Evaluation
Speed up pre-qualification and reduce manual steps with the AMI Lookup and HomeReady Evaluation API. It helps identify HomeReady-eligible borrowers earlier to offer the most cost-effective and flexible loan options.
Get access to the full appraisal data in an easily consumable file format (XML) as submitted by lenders and agents to the Uniform Collateral Data Portal® (UCDP®).
Get appraisal summary status, findings, messages, and Collateral Underwriter® (CU®) risk score to simplify appraisal summary data sharing.
Automate the origination process by retrieving DU findings at any point in the process.
Determine in real time if a loan is owned by Fannie Mae for the purpose of identifying eligibility for underwriting and/or appraisal flexibilities.
Unlock the benefits of our value acceptance + property data offering and ensure compliance by submitting the Uniform Property Dataset through the Property Data API.
Improve price transparency with access to multiple pricing factors through a single, easy-to-consume file.
Identify mission-oriented lending opportunities when making decisions regarding their best execution for secondary market sales.
Servicing Released Premium Pricing
Obtain indicative Servicing Released Premiums (SRP) pricing for whole loans in real-time.
Servicing Released Premium Pricing Calculator
Automate the rate sheet upload process, removing the need to log in to the Fannie Mae Servicing Marketplace® platform (SMP).
Submit new expense claims, update claim information, and retrieve claim status data.
Loan Servicing Property Valuation Order Management
Automate the process for ordering a Broker Price Opinion (BPO) or appraisal to establish the current value of a property for the purpose of evaluating a loan for Mortgage Insurance termination.
Master Servicing Loan Position
Reconcile loans with self-service access to data like unpaid principal balance, last paid installment, origination and acquisition, and mortgage insurance.
Mortgage Insurance Termination Evaluation
Quickly determine if a loan is eligible for Mortgage Insurance (MI) termination.
Pre-Foreclosure Property Inspections and Preservation
Automate the manual processes required to retrieve and report data for delinquent loans related to inspection requirements.
Buy Up Buy Down Daily
Get loan-level details from the previous day’s closed MBS pools.
Committing and Delivery Fee Draft Notifications
Retrieve all adjustments made at the loan, commitment, and lender levels.
Loan-Level Draft Notifications
Obtain draft notifications data from numerous Fannie Mae Connect™ reports.
Automate the manual processes to ingest, reconcile, and look up amounts on open invoices.
Whole Loan Purchase Advice Sellers
Retrieve loan-level financial details about the whole loan purchase for sellers.
Whole Loan Purchase Advice Servicers
Retrieve loan-level financial details about the whole loan purchase for servicers.
Get started
All APIs are available via the Developer Portal. To access public APIs, register for a free account.
To use our Business Partner APIs, you must be an approved Fannie Mae business partner to integrate.
1
Sellers and servicers
Existing seller/servicer partners, contact your Technology Delivery Manager for API access and guidance.
If you are not yet a business partner, learn how to become a Fannie Mae-approved seller or servicer.
Technology service providers
Existing technology service providers (TSPs), contact your Strategic Alliance Manager for API access and guidance.
If you are not yet a business partner, learn how to become a TSP approved to integrate with Fannie Mae’s APIs.
2
Create your code
To begin building your app, log in to the Developer Portal with your Fannie Mae credentials and click “Create app.”
Once your app is created and approved, copy the key and start using the APIs you selected.
The Developer Portal also contains documentation to help integrate with our APIs.
3
Launch when ready
Deploy and monitor your app.
Your Technology Integration representative will keep you informed of new features and releases that may be relevant to your project.
Production support
For production issues, visit our Technology Support Center or call 1-800-2FANNIE (1-800-232-6643).
Digital Management Solutions support
Contact us for relationship-specific questions.
Log in to view live status updates for applications.
Log in for live statusFannie Mae's APIs are governed by the Application Programming Interface and Application License Agreement.
Release notes
Learn about the latest capabilities, bug fixes, and content updates.
