diff --git a/DESCRIPTION b/DESCRIPTION
index 1ab64d6..4409afa 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,6 +1,6 @@
 Package: emdash
 Title: e-mission dashboard built with the Shiny framework
-Version: 1.2.1
+Version: 1.2.2
 Authors@R: person('Amarin', 'Siripanich', email = 'amarin.siri@gmail.com', role = c('cre', 'aut'))
 Description: e-mission dashboard built with the Shiny framework
 License: MIT + file LICENSE
diff --git a/NAMESPACE b/NAMESPACE
index 65e713e..2986713 100644
--- a/NAMESPACE
+++ b/NAMESPACE
@@ -14,13 +14,16 @@ export(query_cleaned_place)
 export(query_cleaned_section)
 export(query_cleaned_trips)
 export(query_raw_trips)
+export(query_server_calls)
 export(query_stage_profiles)
 export(query_stage_uuids)
 export(run_app)
+export(summarise_server_calls)
 export(summarise_trips)
 export(tidy_cleaned_locations)
 export(tidy_cleaned_trips)
 export(tidy_participants)
+export(tidy_server_calls)
 import(data.table)
 import(mapview)
 import(shiny)
diff --git a/NEWS.md b/NEWS.md
index 9fa4f8d..cd7d046 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,6 +1,10 @@
+# emdash 1.2.2
+
+- Added support for displaying the server communication status on the participant table.
+
 # emdash 1.2.1
 
--  Hide the "source" column from the trip table and the map. 
+-  Hid the "source" column from the trip table and the map. 
 
 # emdash 1.2.0
 
diff --git a/R/mod_load_data.R b/R/mod_load_data.R
index c56ff58..2805ceb 100644
--- a/R/mod_load_data.R
+++ b/R/mod_load_data.R
@@ -31,6 +31,10 @@ mod_load_data_server <- function(input, output, session, cons){
     data_r$trips <- tidy_cleaned_trips(query_cleaned_trips(cons), 
                                        project_crs = get_golem_config("project_crs"))
     message("Finished loading trips")
+
+    message("About to load server calls")
+    data_r$server_calls <- tidy_server_calls(query_server_calls(cons))
+    message("Finished loading server calls")
     
     message("About to load locations")
     data_r$locations <- tidy_cleaned_locations(query_cleaned_locations(cons))
@@ -45,7 +49,8 @@ mod_load_data_server <- function(input, output, session, cons){
     message("About to load participants")
     data_r$participants <- 
       tidy_participants(query_stage_profiles(cons), query_stage_uuids(cons)) %>%
-      summarise_trips(., data_r$trips)
+      summarise_trips(., data_r$trips) %>%
+      summarise_server_calls(., data_r$server_calls)
     message("Finished loading participants")
 
     
diff --git a/R/utils_query_database.R b/R/utils_query_database.R
index b2b2fb5..9a445f6 100644
--- a/R/utils_query_database.R
+++ b/R/utils_query_database.R
@@ -16,6 +16,19 @@ query_cleaned_locations <- function(cons) {
     normalise_uuid()
 }
 
+#' @rdname query
+#' @export
+query_server_calls <- function(cons) {
+  # to implement later - query only for the API call patterns that are relevant
+  # the problem is that if there aren't any entries (might happen if the user
+  # has just signed up and not taken any trips), then numerous downstream calls fail
+  # Fixes for downstream calls are in a patch in the PR
+  # cons$Stage_timeseries$find('{"metadata.key": "stats/server_api_time", "data.name": {"$regex": "/usercache|get_complete_ts/", "$options": ""}}') %>%
+  cons$Stage_timeseries$find('{"metadata.key": "stats/server_api_time"}') %>%
+    as.data.table() %>%
+    normalise_uuid()
+}
+
 #' @rdname query
 #' @export
 query_cleaned_trips <- function(cons) {
@@ -74,6 +87,9 @@ query_stage_profiles <- function(cons) {
 #' @return a data.frame
 #' @export
 normalise_uuid <- function(.data, keep_uuid = FALSE) {
+  if (nrow(.data) == 0) {
+    return(.data);
+  }
   # return(.data)
   if (!is.data.table(.data)) {
     setDT(.data)
diff --git a/R/utils_tidy_data.R b/R/utils_tidy_data.R
index 31bc309..955c258 100644
--- a/R/utils_tidy_data.R
+++ b/R/utils_tidy_data.R
@@ -161,6 +161,30 @@ summarise_trips = function(participants, trips) {
   merge(participants, summ_trips, by = "user_id", all.x = TRUE)
 }
 
+#' Create a summary of server calls in data.table format.
+#'
+#' @param participants the output from `tidy_participants()`.
+#' @param server_calls the output from `tidy_server_calls()`.
+#'
+#' @return a data.table.
+#' @export
+summarise_server_calls = function(participants, server_calls) {
+  
+  summ_calls <-
+    server_calls %>%
+    data.table::setDT(.) %>%
+    .[, date := format(lubridate::as_datetime(ts), usetz = FALSE)] # adds the date of local datetime of trip
+
+  usercache_get_summ <- summ_calls %>% .[name == 'POST_/usercache/get', .(first_get_call = min(date), last_get_call = max(date)), by = user_id]
+  usercache_put_summ <- summ_calls %>% .[name == 'POST_/usercache/put', .(first_put_call = min(date), last_put_call = max(date)), by = user_id]
+  diary_summ <- summ_calls %>% .[name == 'POST_/pipeline/get_complete_ts', .(first_diary_call = min(date), last_diary_call = max(date)), by = user_id]
+
+  message("merging ")
+  # merge(participants, usercache_get_summ, usercache_put_summ, by = "user_id", all.x = TRUE)
+  merge(participants, usercache_get_summ, by = "user_id", all.x = TRUE) %>%
+   merge(., usercache_put_summ, by = "user_id", all.x = TRUE) %>%
+    merge(., diary_summ, by = "user_id", all.x = TRUE)
+}
 
 #' Tidy the 'cleaned locations' data.frame into a tibble.
 #'
@@ -184,6 +208,28 @@ tidy_cleaned_locations = function(cleaned_locations) {
   return(tidied_locations)
 }
 
+#' Tidy the 'server calls' data.frame into a tibble.
+#'
+#' @param server_calls a data.table output from `query_server_calls()`.
+#'
+#' @return a tibble.
+#' @export
+tidy_server_calls = function(server_calls) {
+  message("Finished query, about to tidy server calls")
+  tidied_server_calls =
+    # flatten out names and select specific columns
+    server_calls %>%
+    setnames(gsub("data.", "", names(.))) %>%
+    janitor::clean_names() %>%
+    dplyr::select(user_id, name, ts, reading) %>%
+    # convert datetime
+    dplyr::mutate(
+      fmt_time_utc = lubridate::as_datetime(ts)
+    )
+  message("Finished tidying server calls")
+  return(tidied_server_calls)
+}
+
 
 #' Tidy together the 'tidied trips' and 'tidied locations' to generate trajectories within a trip
 #'
diff --git a/man/query.Rd b/man/query.Rd
index c96583a..55ee360 100644
--- a/man/query.Rd
+++ b/man/query.Rd
@@ -3,6 +3,7 @@
 \name{query}
 \alias{query}
 \alias{query_cleaned_locations}
+\alias{query_server_calls}
 \alias{query_cleaned_trips}
 \alias{query_cleaned_place}
 \alias{query_cleaned_section}
@@ -13,6 +14,8 @@
 \usage{
 query_cleaned_locations(cons)
 
+query_server_calls(cons)
+
 query_cleaned_trips(cons)
 
 query_cleaned_place(cons)
diff --git a/man/summarise_server_calls.Rd b/man/summarise_server_calls.Rd
new file mode 100644
index 0000000..e24fffe
--- /dev/null
+++ b/man/summarise_server_calls.Rd
@@ -0,0 +1,19 @@
+% Generated by roxygen2: do not edit by hand
+% Please edit documentation in R/utils_tidy_data.R
+\name{summarise_server_calls}
+\alias{summarise_server_calls}
+\title{Create a summary of server calls in data.table format.}
+\usage{
+summarise_server_calls(participants, server_calls)
+}
+\arguments{
+\item{participants}{the output from `tidy_participants()`.}
+
+\item{server_calls}{the output from `tidy_server_calls()`.}
+}
+\value{
+a data.table.
+}
+\description{
+Create a summary of server calls in data.table format.
+}
diff --git a/man/tidy_server_calls.Rd b/man/tidy_server_calls.Rd
new file mode 100644
index 0000000..f4293d8
--- /dev/null
+++ b/man/tidy_server_calls.Rd
@@ -0,0 +1,17 @@
+% Generated by roxygen2: do not edit by hand
+% Please edit documentation in R/utils_tidy_data.R
+\name{tidy_server_calls}
+\alias{tidy_server_calls}
+\title{Tidy the 'server calls' data.frame into a tibble.}
+\usage{
+tidy_server_calls(server_calls)
+}
+\arguments{
+\item{server_calls}{a data.table output from `query_server_calls()`.}
+}
+\value{
+a tibble.
+}
+\description{
+Tidy the 'server calls' data.frame into a tibble.
+}