The PIP file perception.pip is the simplest possible PIP file that allows you to try using PIP with minimum work. It calls session.php passing an assessment ID of an assessment.
In the PIP file:
DETAILS="Perception Integration Protocol"
Set the SESSION parameter to the assessment ID of an assessment in the repository. You should be able to make a call from your browser to:
...where <domain name> is the domain name for your Questionmark rea. This will run the assessment the assessment ID defined in the PIP file. No program is called at the end of the assessment.