Xindi bio-weapon
The Xindi bio-weapon was an alternate method of wiping out Humanity devised by the Xindi-Reptilian scientist Damron.

To gather the necessary biological information, the Reptilians placed an operative, Rajiin, aboard  who was capable of scanning people with her hands. She had scanned several crewmembers by the time her true goal was discovered and was locked in the brig. A group of Reptilians and Insectoids eventually freed her. Even though this info won Kiaphet Amman'sor's vote in favor of the bio-weapon, the Xindi Council still elected to abandon the bio-weapon project and ordered that it be shut down. ()

Without the Council's knowledge, Damron and his team were brought to Earth by the Guardians in the year 2004, so they could complete their preparations and utilize the weapon in secret. The bio-weapon required samples of all eight Human blood types to be properly calibrated. The Reptilians hired a man named  to obtain samples of all these blood types for them. However,  transported Jonathan Archer and T'Pol to 2004 as well to stop the Reptilians. They were successful in doing so, and they recovered the bio-weapon materials, which were put in storage and later used to convince the Primate and Arboreal representatives Degra and Jannar of the Guardians' treachery. ()

Weapons

de:Xindi-Biowaffe
fr:Arme biologique xindie