In response to the public LIGO/Virgo gravitational wave (GW) alert of the on-going osservative run O3, with trigger event name S190510g at T0 = 2019-05-10 02:59:39 (UT), the AGILE Team performed a quick look follow-up analysis of the AGILE data.
The AGILE exposure at T0 shows that the S190510g Ligo-Virgo localization region was covered by the MCAl instrument for about 90%, and by the GRID instrument for about 60%.

Preliminary results and AGILE MCAL and GRID upper limits have been published in two GCN CIRCULARS:
GCN #24437: LIGO-Virgo S190510g: AGILE MCAL observations
GCN #24457: LIGO-Virgo S190510g: AGILE GRID observations