OTM exposes a REST API that lets external systems read and write OTM data without using XML transmissions. All four standard HTTP methods are supported — GET, POST, PATCH, and DELETE — and the same API can run OTM Saved Queries, which lets you pass parameters into complex SQL-backed searches.

Setup — Create an Integration User

Before making any API call, create a dedicated user in OTM and attach a role that includes the REST ACLs for the objects you need.