Xindi history Xindi history was long and troubled ; the Xindi were often characterized by inter - species conflict . The Xindi were a spacefaring civilization for at least 4 , 000 years , since the remains of 4 , 000 year - old Xindi - Avians were found on another planet . ( ) Civil war and diaspora . For about a century , the different Xindi races fought for control of Xindus , their homeworld . At the end of this long war , the Xindi - Reptilian s and the Xindi - Insectoid s forged an alliance which resulted in the destruction of the planet , sometime during the 2030s . The Xindi - Avian s were unable to evacuate when Xindus was destroyed . ( ) This began the era known to the Xindi as the Great Diaspora , as the various Xindi species that survived the destruction declared peace and sought to work together to find and establish a new homeworld . They were unable to settle on a single new world , however , spreading across several worlds in the Delphic Expanse , including Azati Prime and others . It was around this time that the Xindi were first contacted by the transdimensional beings they dubbed the Guardians . The Guardians assisted the Xindi during the Diaspora , directing groups of refugees to appropriate planets and helping them avoid the dangers of the Expanse . The Guardians were responsible for the creation of the Xindi Council and kept it together during troubling times . ( ) The Human threat . In the 2140s , the Guardians contacted the Xindi Council , informing them that – in the 26th century – Human ity would destroy their new homeworld , thereby using the Xindi for their purposes in the Temporal Cold War . As a result , the Xindi began developing a planet - destroying weapon , so they could wipe out Earth in a preemptive strike . A test strike against Earth in March of 2153 resulted in the deaths of seven million people between Florida and Venezuela . Earth responded by sending the flagship of Starfleet , , into the Delphic Expanse , in order to find the Xindi and stop them from launching their final weapon . ( ) When " Enterprise " arrived at Azati Prime in January of 2154 after a long and harrowing search for the weapon , the information Captain Jonathan Archer brought rocked Xindi civilization to its core . He revealed that the Xindi " Guardians " were actually the same beings responsible for the construction of the spheres found all across the Delphic Expanse , and that they were using the spheres to alter space in our universe to conform to their dimension ' s physical laws . They had foreseen that , in the 26th century , the United Federation of Planets would defeat their invasion force ; the Sphere - Builders were trying to stop this from happening by destroying Earth , using the Xindi . ( ) Archer managed to convert Primate representative ( and weapon designer ) Degra to his cause and , with his help , brought Arboreal representative Jannar and the other Primate on the Council to his side as well . The Aquatics remained on the fence until Archer provided stronger evidence ; they then provisionally sided with Archer ' s cause . The Reptilian representative Commander Dolim as well as his Insectoid colleague refused to accept Archer ' s story and stole the weapon rather than let the Council delay the launch . Fortunately for Earth and the future , " Enterprise " – working with the Primates , Arboreals and Aquatics – managed to stop the weapon from destroying Earth . " Enterprise " also destroyed the sphere network in the Delphic Expanse . ( ) The Insectoids eventually rejoined the Council , after events indicated Archer ' s story was correct . The Xindi expressed gratitude toward " Enterprise " for showing them the truth , though reunifying after the fractures Archer ' s revelations had caused proved to be difficult . ( ) Future history . According to , the Xindi were intended to join the Federation ; by the 26th century , Xindi were serving aboard Starfleet vessels . ( )