Systems and methods for use in certifying interactions with hosted services

Systems and methods are provided for validating customer use of application programming interfaces (APIs). An exemplary method includes selecting an API defining at least one service to be used by a customer and a standard associated with the API for data payloads directed to the API, and identifying the customer. The method also includes selecting at least one test case for the API and the customer, bundling the test case(s) into a test project for the customer, and transmitting the test project to the customer whereby the customer is able to execute the test project. The method further includes monitoring data payloads between the API and the customer and compiling a report indicative of a result of the test case(s) where the report indicates whether the data payloads are compliant with the standard associated with the API and whether the customer is certified to use the API, or not.