Launch Aspire (if it's not already running). See:
In the General tab in the Service Configuration window, specify a basic the service name.
In the Service tab, configure the HTTP listener.
Some advanced options are also available.
In the "Workflow" tab, specify the workflow steps for the jobs emitted by the listener. Drag and drop rules to determine which steps should an item follow after being received. These rules could be where to publish the document or transformations needed on the data before sending it to a search engine. See Workflow for more information.
After completing this steps click on the Save then Done and you'll be sent back to the Home Page.
As soon as the service is saved it will run. Data can then be sent to the endpoint using curl, or by simply using a web browser.
curl --data-binary "@<filename>" http://localhost:50505/process