Mortgage Insurance Estimated Rate Quote API

The MI Estimated Rate Quote API iGuide and sample files are based on the MISMO Version 3.5 Reference Model and are designed to provide lenders with the MI Rate prior to submitting an MI Order. The JSON Estimated Rate Quote was created for trading partners who would like to utilize a more lightweight REST-based API transaction rather than the XML Estimated Rate Quote.

Changes to the MI Estimated Rate Quote API iGuide and sample files include corrections to several typographical errors, updates to comments, conditionality, the removal of an object and corrections to several object references.

The MISMO Mortgage Insurance Community of Practice reminds all trading partners that it is important to coordinate with your MI provider partners to implement these upgrades. Please reach out to contacts specified at www.mismo.org/mi to ensure you have appropriate information for each MI provider with which you work.

The MI Estimated Rate Quote API was released as Candidate Recommendation in July of 2024.

Access Information for Members

MISMO Members can access: 

  • The API Toolkit in the Resource Library housed on MISMO's Collaboration Site "MISMO Connect" here.
  • The Mortgage Insurance Rate Quote API in the Resource Library housed on MISMO's Collaboration Site, "MISMO Connect" here.

Access Information for Non-Members

Non-Members can access the Mortgage Insurance JSON Estimated Rate Quote API here


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