The main payload aboard STP-29A will be STPSat-7, an ESPA class satellite based on the Aegis Aerospace M-1 satellite bus used on the STPSat-4 mission for hosting research and technology demonstration payloads for the Department of Defense (DoD). One of the payload is U.S. Naval Research Laboratory's (NRL) Lightsheet Anomaly Resolution and Debris Observation (LARADO) instrument, used to detect and characterize lethal non-trackable orbital debris with lasers in orbit.

The primary mission of AggieSat6 (AGS6) is to demonstrate the functionality of a space-based radiofrequency array device for the Space Domain Awareness (SDA) application of satellite position and orbit determination.

The secondary mission is to sample the low-energy electron radiation environment on Low Earth Orbit (LEO) to enhance existing radiation models.