AGLIN was established as FLIN (Federal Libraries Information Network) in May 1993, after some 20 years of discussions and submissions to government on the need for a coordinating body for government special libraries. (The name change to AGLIN occurred in 2003 to reflect contemporary government terminology). Such a body, it was thought would improve the efficiency and effectiveness of library and information service to government, through representation, professional development and training, consortium arrangements and collaborative purchasing, as well as partnerships with ALIA and the National Library of Australia. AGLIN's member libraries ranged in size from larger bodies such as the Department of Defence and CSIRO, to smaller agencies such as the Australian Electoral Commission.
AGLIN was an incorporated body with its own Constitution. The Executive was drawn from the general membership and elected at the Annual General Meeting. Apart from these members, the committee also included an invited representative from the National Library. AGLIN held regular annual one-day conferences, created useful policies, including its Core principles for Members (adopted July 2010), sponsored an Aurora Scholarship for several years, and commissioned a Commonwealth Government Agency Libraries Review in 2017. It also appointed a representative to the Australian Libraries Copyright Committee, and continues to do so.