The IAEA has been applying safeguards in Iran since the mid-1970s, shortly after Iran concluded its first Safeguards Agreement with the Agency in May 1974. General information about IAEA safeguards can be found here.
On June 6, 2003, the IAEA released the first in what have become a series of regular reports on Iran's nuclear program, specifically the status of its safeguards implementation. These reports are rich in detail about Iran's activities and, taken as a whole, provide the single most authoritative set of documents about Iran's nuclear activities. The following cursory annotation of the reports should not be read as an exhaustive summary of each report's contents, but as an abbreviated roadmap to a few key highlights.
January 17, 2016 Verification and Monitoring in the Islamic Republic of Iran in light of UNSCR 2231 (2015)
December 2, 2015 IAEA’s Final Assessment on Past and Present Outstanding Issues regarding Iran’s Nuclear Program
Implementation of the NPT Safeguards Agreement in Iran for February 19, 2015
January 20, 2015 Status of Iran’s Nuclear Program in relation to the Joint Plan of Action, January 20, 2015IAEA's latest update on Iran's compliance with the JPOA
Status of Iran’s Nuclear Program in relation to the Joint Plan of Action, November 24, 2014
November 7, 2014 Implementation of the NPT Safeguards Agreement in Iran for November 7, 2014 (Corrigenda)
August 20, 2014 Status of Iran’s Nuclear Programme in Relation to the Joint Plan of Action, August 20, 2014
November 8, 2011 Implementation of the NPT Safeguards Agreement in the Islamic Republic of Iran for November 8, 2011
September 2, 2011 Implementation of the NPT Safeguards Agreement in the Islamic Republic of Iran for September 2, 2011
February 18, 2010 February 18, 2010 Implementation of the NPT Safeguards Agreement in the Islamic Republic of Iran
Briefing notes from February 2008 IAEA meeting regarding Iran’s nuclear program.
NuclearIran highlights: very detailed report, covers most “outstanding issues” including Iran’s explanation of procurement by Physics Research center, the uranium metal document, Polonium-210 research, contamination issues, the role of the Gchine mine, some discussion of “alleged studies” on weaponization. Notes that since February 2007, 1670kg of UF6 has been introduced into the cascades with 75kg of product with a stated enrichment of 3.8 percent U235. Mentions work on four different centrifuge designs and installation of IR-2 test cascades.