You can use the SearchBlox Development Environment to try out the REST API. You can access the SDE after creating a Custom Collection.
SearchBlox Development Environment
The SearchBlox Development Environment (SDE) can be accessed using the link http://localhost:8080/searchblox/sde/index.jsp, or the SDE link available on the page while selecting the custom collection path setting. Using the SDE, you can create and delete custom collections, index, delete, optimize, clear, determine the status of, and search the custom collection using the corresponding tab for each function.
The input to this SearchBlox REST-API should be in XML format, and sample codes can be found in the Help section. There is also an option called Load Sample Request for every tab (function). The user needs to provide the correct API key, collection name, the right location, etc.. While indexing, the XML code is displayed in separate pop ups, and later the status message is displayed.