diff --git a/zebra-utils/zcash-rpc-diff b/zebra-utils/zcash-rpc-diff
index 818dac6d..2a89a4a9 100755
--- a/zebra-utils/zcash-rpc-diff
+++ b/zebra-utils/zcash-rpc-diff
@@ -18,6 +18,10 @@ function usage()
 ZCASH_CLI="${ZCASH_CLI:-zcash-cli}"
 DIFF="${DIFF:-diff --unified --color=always}"
 JQ="${JQ:-jq}"
+# Zcashd authentication modes:
+# - Use `-rpccookiefile=your/cookie/file` for a cookie file.
+# - Use `-rpcpassword=your-password` for a password.
+ZCASHD_EXTRA_ARGS="${ZCASHD_EXTRA_ARGS:-}"
 
 if [ $# -lt 2 ]; then
     usage
@@ -41,7 +45,7 @@ ZEBRAD=$(cat "$ZEBRAD_RELEASE_INFO" | grep '"subversion"' | cut -d: -f2 | cut -d
              tr 'A-Z' 'a-z' | sed 's/magicbean/zcashd/ ; s/zebra$/zebrad/')
 
 echo "Checking second node release info..."
-$ZCASH_CLI getinfo > "$ZCASHD_RELEASE_INFO"
+$ZCASH_CLI $ZCASHD_EXTRA_ARGS getinfo > "$ZCASHD_RELEASE_INFO"
 
 ZCASHD=$(cat "$ZCASHD_RELEASE_INFO" | grep '"subversion"' | cut -d: -f2 | cut -d/ -f2 | \
              tr 'A-Z' 'a-z' | sed 's/magicbean/zcashd/ ; s/zebra$/zebrad/')
@@ -60,7 +64,7 @@ ZEBRAD_NET=$(cat "$ZEBRAD_BLOCKCHAIN_INFO" | grep '"chain"' | cut -d: -f2 | tr -
 ZEBRAD_HEIGHT=$(cat "$ZEBRAD_BLOCKCHAIN_INFO" | grep '"blocks"' | cut -d: -f2 | tr -d ' ,"')
 
 echo "Checking $ZCASHD network and tip height..."
-$ZCASH_CLI getblockchaininfo > "$ZCASHD_BLOCKCHAIN_INFO"
+$ZCASH_CLI $ZCASHD_EXTRA_ARGS getblockchaininfo > "$ZCASHD_BLOCKCHAIN_INFO"
 
 ZCASHD_NET=$(cat "$ZCASHD_BLOCKCHAIN_INFO" | grep '"chain"' | cut -d: -f2 | tr -d ' ,"')
 ZCASHD_HEIGHT=$(cat "$ZCASHD_BLOCKCHAIN_INFO" | grep '"blocks"' | cut -d: -f2 | tr -d ' ,"')
@@ -93,7 +97,7 @@ time $ZCASH_CLI -rpcport="$ZEBRAD_RPC_PORT" "$@" > "$ZEBRAD_RESPONSE"
 echo
 
 echo "Querying $ZCASHD $ZCASHD_NET chain at height >=$ZCASHD_HEIGHT..."
-time $ZCASH_CLI "$@" > "$ZCASHD_RESPONSE"
+time $ZCASH_CLI $ZCASHD_EXTRA_ARGS "$@" > "$ZCASHD_RESPONSE"
 echo
 
 echo
@@ -119,6 +123,9 @@ EXIT_STATUS=$?
 
 if [ "$1" == "getaddressutxos" ]; then
     set "getaddressbalance" "$2"
+elif [ "$1" == "getrawmempool" ]; then
+    # Call `getrawmempool` again as a dummy request (this script isn't set up to do multiple cross-check calls)
+    set "getrawmempool"
 else
     exit $EXIT_STATUS
 fi
@@ -136,7 +143,7 @@ echo "Querying $ZEBRAD $ZEBRAD_NET chain at height >=$ZEBRAD_HEIGHT..."
 $ZCASH_CLI -rpcport="$ZEBRAD_RPC_PORT" "$@" > "$ZEBRAD_CHECK_RESPONSE"
 
 echo "Querying $ZCASHD $ZCASHD_NET chain at height >=$ZCASHD_HEIGHT..."
-$ZCASH_CLI "$@" > "$ZCASHD_CHECK_RESPONSE"
+$ZCASH_CLI $ZCASHD_EXTRA_ARGS "$@" > "$ZCASHD_CHECK_RESPONSE"
 
 echo
 
@@ -192,6 +199,58 @@ if [ "$1" == "getaddressbalance" ]; then
     fi
 fi
 
+if [ "$1" == "getrawmempool" ] && [ $CHECK_EXIT_STATUS != 0 ]; then
+    set TRANSACTION_ID
+    set TRANSACTION_HEX_FILE
+    set TRANSACTION_DECODED
+
+    ZEBRAD_TRANSACTION_IDS=$(cat "$ZEBRAD_RESPONSE" | $JQ -r 'join(" ")')
+    ZCASHD_TRANSACTION_IDS=$(cat "$ZCASHD_RESPONSE" | $JQ -r 'join(" ")')
+
+    echo
+    echo "# Dumping transactions from zebrad mempool"
+    echo
+
+    for TRANSACTION_ID in $ZEBRAD_TRANSACTION_IDS; do
+        TRANSACTION_HEX_FILE="$ZCASH_RPC_TMP_DIR/$ZEBRAD-$ZEBRAD_NET-$ZEBRAD_HEIGHT-$TRANSACTION_ID.json"
+
+        $ZCASH_CLI -rpcport="$ZEBRAD_RPC_PORT" getrawtransaction $TRANSACTION_ID 0 > $TRANSACTION_HEX_FILE
+
+        echo "## Displaying transaction $TRANSACTION_ID from zebrad"
+        echo
+
+        # read the proposal data from a file, to avoid command-line length limits
+        TRANSACTION_DECODED=`cat "$TRANSACTION_HEX_FILE" | \
+            $ZCASH_CLI $ZCASHD_EXTRA_ARGS -stdin decoderawtransaction`
+
+        echo $TRANSACTION_DECODED | $JQ
+        echo
+    done
+
+    echo
+    echo "# Dumping transactions from zcashd mempool"
+    echo
+
+    for TRANSACTION_ID in $ZCASHD_TRANSACTION_IDS; do
+        TRANSACTION_HEX_FILE="$ZCASH_RPC_TMP_DIR/$ZCASHD-$ZCASHD_NET-$ZCASHD_HEIGHT-TRANSACTION_HEX-$TRANSACTION_ID.json"
+
+        $ZCASH_CLI $ZCASHD_EXTRA_ARGS getrawtransaction $TRANSACTION_ID 0 > $TRANSACTION_HEX_FILE
+
+        echo "## Displaying transaction $TRANSACTION_ID from zcashd"
+        echo
+
+        # read the proposal data from a file, to avoid command-line length limits
+        TRANSACTION_DECODED=`cat "$TRANSACTION_HEX_FILE" | \
+            $ZCASH_CLI $ZCASHD_EXTRA_ARGS -stdin decoderawtransaction`
+
+        echo $TRANSACTION_DECODED | $JQ
+        echo
+    done
+
+fi
+
+echo "Full RPC output is in $ZCASH_RPC_TMP_DIR"
+
 if [ $EXIT_STATUS -ne 0 ]; then
     exit $EXIT_STATUS
 else