Software Partner Resource Center
Freddie Mac works with mortgage technology software partners to provide our mutual clients with access to Freddie Mac tools through their interfaces. Access the latest system specifications, verification testing instructions and specifications bulletins below.
Our Software Partner Resource Center is designed exclusively for software partners who have an established relationship with Freddie Mac and develop interfaces for our Freddie Mac Loan AdvisorSM tools, the Uniform Collateral Data Portal® and our servicing systems.
Software Partners: Please ensure your system interfaces remain current with the latest specifications and specification bulletins.
Loan Product Advisor®
Current Specifications
- Loan Product Advisor System-to-System Specification Bulletin v5.3.00 – March 2023
- ULAD Resources
- Additional Resources
Verification Testing
- Loan Product Advisor System-to-System v5.1.00 Test Binder* – February 2022 – Updated 2/16/2022
- Loan Product Advisor Duty Serve Test Binder v5.1.00 – August 2022
- Freddie Mac Test Borrowers – Updated 4/28/2023
Loan Quality Advisor®
Specifications
- Loan Quality Advisor System-to-System Web Services Technical Documentation – Updated 2/20/2023
- Additional Resources
Verification Testing
- Loan Quality Advisor ULDD Phase 4a Full Integration Test Binder vFRE 5.0.0. – Updated 2/24/2023
- Loan Quality Advisor v6.4 ULDD Phase 4a Regression Test Binder - September 2022
- Freddie Mac Test Borrowers – Updated 4/28/2023
Loan Closing Advisor®
Specifications
- Loan Closing Advisor S2S Web Services Technical Documentation v3.2 – July 2021* – Updated 1/31/2020
- UCD Resources
Verification Testing
- Loan Closing Advisor Test Binder v1.4 September 2016* – Updated 9/30/2016
Loan Selling Advisor®
Specifications
- Appendix D – Freddie Mac XML Data Requirements Reference Tool
- Pricing and Committing Loans through APIs
- ULDD Resources
Verification Testing
- Loan Selling Advisor ULDD Phase 4a Regression Test Binder vFRE 5.0.0– Updated 9/9/2022
- Pricing and Committing S2S Testing and Verification User Guide
Uniform Collateral Data Portal®
Specifications
- Technical Integration Guide for the Uniform Collateral Data Portal* – Updated 9/12/2017
- Direct Integration Vendor Requirements for UCDP Freddie Mac Proprietary Findings – Updated 5/29/2014
- Additional Resources
*Note: Some specifications and verification testing files are password-protected. If you have questions or need further information, please contact your Software Partner representative directly or email the Software Partner team at [email protected].