  We studied the broadband X-ray spectra of {\it Swift}/BAT selected
low-accreting AGNs using the observations from {\it XMM-Newton}, {\it Swift},
and {\it NuSTAR} in the energy range of $0.5-150$~keV. Our sample consists of
30 AGNs with Eddington ratio, $\lambda_{\rm Edd}<10^{-3}$. We extracted several
coronal parameters from the spectral modelling, such as the photon index, hot
electron plasma temperature, cutoff energy, and optical depth. We tested
whether there exists any correlation/anti-correlation among different spectral
parameters. We observe that the relation of hot electron temperature with the
cutoff energy in the low accretion domain is similar to what is observed in the
high accretion domain. We did not observe any correlation between the Eddington
ratio and the photon index. We studied the compactness-temperature diagram and
found that the cooling process for extremely low-accreting AGNs is complex. The
jet luminosity is calculated from the radio flux, and observed to be related to
the bolometric luminosity as $L_{\rm jet} \propto L_{\rm bol}^{0.7}$, which is
consistent with the standard radio-X-ray correlation.
