Version Numbers

URL Paths

The path used by each ATTOM API endpoint includes a version number. e.g. in the example below, version 4 of this endpoint is being used.

Breaking Changes

As enhancements are made to improve each ATTOM API endpoint, our development team must decide if a particular enhancement is likely to impact existing endpoint users. If it is expected to cause an issue then the change is referred to as a "breaking change". Each time a breaking change is made we release the changes as a new version number. Otherwise, the change is made to the existing version of the endpoint.


In late 2022 ATTOM made a series of changes to all ATTOM API endpoints

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