diff --git a/ct/localagi.sh b/ct/localagi.sh
index b46eca0c4..8104a8c39 100644
--- a/ct/localagi.sh
+++ b/ct/localagi.sh
@@ -21,6 +21,31 @@ variables
 color
 catch_errors
 
+LOCALAGI_DEBUG_CURL_LOG="/tmp/localagi-curl-debug.log"
+
+function curl() {
+  command curl "$@"
+  local curl_rc=$?
+
+  if [[ "$curl_rc" -ne 0 && "${LOCALAGI_DEBUG_CURL:-1}" == "1" ]]; then
+    local curl_url=""
+    local arg
+    for arg in "$@"; do
+      if [[ "$arg" =~ ^https?:// ]]; then
+        curl_url="$arg"
+      fi
+    done
+
+    local debug_line
+    debug_line="[$(date '+%Y-%m-%dT%H:%M:%S%z')] curl failed rc=${curl_rc} url=${curl_url:-unknown} args=$*"
+    echo "$debug_line" | tee -a "$LOCALAGI_DEBUG_CURL_LOG" >&2
+  fi
+
+  return "$curl_rc"
+}
+
+msg_info "Curl debug enabled (log: ${LOCALAGI_DEBUG_CURL_LOG})"
+
 LOCALAGI_WAS_STOPPED=0
 
 function cleanup_localagi_service() {