diff --git a/hw/pci-hotplug.c b/hw/pci-hotplug.c
index 8355e66..389164a 100644
--- a/hw/pci-hotplug.c
+++ b/hw/pci-hotplug.c
@@ -151,10 +151,12 @@ static PCIDevice *qemu_pci_hot_add_storage(Monitor *mon,
     return dev;
 }
 
-void pci_device_hot_add(Monitor *mon, const char *pci_addr, const char *type,
-                        const char *opts)
+void pci_device_hot_add(Monitor *mon, const QDict *qdict)
 {
     PCIDevice *dev = NULL;
+    const char *pci_addr = qdict_get_str(qdict, "pci_addr");
+    const char *type = qdict_get_str(qdict, "type");
+    const char *opts = qdict_get_try_str(qdict, "opts");
 
     /* strip legacy tag */
     if (!strncmp(pci_addr, "pci_addr=", 9)) {
diff --git a/monitor.c b/monitor.c
index 5ba6d64..1dc6296 100644
--- a/monitor.c
+++ b/monitor.c
@@ -517,9 +517,11 @@ static void do_change_vnc(Monitor *mon, const char *target, const char *arg)
     }
 }
 
-static void do_change(Monitor *mon, const char *device, const char *target,
-                      const char *arg)
+static void do_change(Monitor *mon, const QDict *qdict)
 {
+    const char *device = qdict_get_str(qdict, "device");
+    const char *target = qdict_get_str(qdict, "target");
+    const char *arg = qdict_get_try_str(qdict, "arg");
     if (strcmp(device, "vnc") == 0) {
         do_change_vnc(mon, target, arg);
     } else {
@@ -1112,12 +1114,14 @@ static void release_keys(void *opaque)
     }
 }
 
-static void do_sendkey(Monitor *mon, const char *string, int has_hold_time,
-                       int hold_time)
+static void do_sendkey(Monitor *mon, const QDict *qdict)
 {
     char keyname_buf[16];
     char *separator;
     int keyname_len, keycode, i;
+    const char *string = qdict_get_str(qdict, "string");
+    int has_hold_time = qdict_haskey(qdict, "hold_time");
+    int hold_time = qdict_get_try_int(qdict, "hold_time", -1);
 
     if (nb_pending_keycodes > 0) {
         qemu_del_timer(key_timer);
@@ -1166,10 +1170,12 @@ static void do_sendkey(Monitor *mon, const char *string, int has_hold_time,
 
 static int mouse_button_state;
 
-static void do_mouse_move(Monitor *mon, const char *dx_str, const char *dy_str,
-                          const char *dz_str)
+static void do_mouse_move(Monitor *mon, const QDict *qdict)
 {
     int dx, dy, dz;
+    const char *dx_str = qdict_get_str(qdict, "dx_str");
+    const char *dy_str = qdict_get_str(qdict, "dy_str");
+    const char *dz_str = qdict_get_try_str(qdict, "dz_str");
     dx = strtol(dx_str, NULL, 0);
     dy = strtol(dy_str, NULL, 0);
     dz = 0;
@@ -2568,7 +2574,6 @@ static void monitor_handle_command(Monitor *mon, const char *cmdline)
     void *str_allocated[MAX_ARGS];
     void *args[MAX_ARGS];
     void (*handler_d)(Monitor *mon, const QDict *qdict);
-    void (*handler_3)(Monitor *mon, void *arg0, void *arg1, void *arg2);
     void (*handler_4)(Monitor *mon, void *arg0, void *arg1, void *arg2,
                       void *arg3);
     void (*handler_5)(Monitor *mon, void *arg0, void *arg1, void *arg2,
@@ -2860,13 +2865,10 @@ static void monitor_handle_command(Monitor *mon, const char *cmdline)
     case 0:
     case 1:
     case 2:
+    case 3:
         handler_d = cmd->handler;
         handler_d(mon, qdict);
         break;
-    case 3:
-        handler_3 = cmd->handler;
-        handler_3(mon, args[0], args[1], args[2]);
-        break;
     case 4:
         handler_4 = cmd->handler;
         handler_4(mon, args[0], args[1], args[2], args[3]);
diff --git a/net.c b/net.c
index 276be9d..c580082 100644
--- a/net.c
+++ b/net.c
@@ -903,8 +903,7 @@ static SlirpState *slirp_lookup(Monitor *mon, const char *vlan,
     }
 }
 
-void net_slirp_hostfwd_remove(Monitor *mon, const char *arg1,
-                              const char *arg2, const char *arg3)
+void net_slirp_hostfwd_remove(Monitor *mon, const QDict *qdict)
 {
     struct in_addr host_addr = { .s_addr = INADDR_ANY };
     int host_port;
@@ -913,6 +912,9 @@ void net_slirp_hostfwd_remove(Monitor *mon, const char *arg1,
     SlirpState *s;
     int is_udp = 0;
     int err;
+    const char *arg1 = qdict_get_str(qdict, "arg1");
+    const char *arg2 = qdict_get_try_str(qdict, "arg2");
+    const char *arg3 = qdict_get_try_str(qdict, "arg3");
 
     if (arg2) {
         s = slirp_lookup(mon, arg1, arg2);
@@ -1022,11 +1024,13 @@ static void slirp_hostfwd(SlirpState *s, Monitor *mon, const char *redir_str,
     config_error(mon, "invalid host forwarding rule '%s'\n", redir_str);
 }
 
-void net_slirp_hostfwd_add(Monitor *mon, const char *arg1,
-                           const char *arg2, const char *arg3)
+void net_slirp_hostfwd_add(Monitor *mon, const QDict *qdict)
 {
     const char *redir_str;
     SlirpState *s;
+    const char *arg1 = qdict_get_str(qdict, "arg1");
+    const char *arg2 = qdict_get_try_str(qdict, "arg2");
+    const char *arg3 = qdict_get_try_str(qdict, "arg3");
 
     if (arg2) {
         s = slirp_lookup(mon, arg1, arg2);
diff --git a/net.h b/net.h
index e6fd3f8..706531a 100644
--- a/net.h
+++ b/net.h
@@ -137,10 +137,8 @@ int net_client_init(Monitor *mon, const char *device, const char *p);
 void net_client_uninit(NICInfo *nd);
 int net_client_parse(const char *str);
 void net_slirp_smb(const char *exported_dir);
-void net_slirp_hostfwd_add(Monitor *mon, const char *arg1,
-                           const char *arg2, const char *arg3);
-void net_slirp_hostfwd_remove(Monitor *mon, const char *arg1,
-                              const char *arg2, const char *arg3);
+void net_slirp_hostfwd_add(Monitor *mon, const QDict *qdict);
+void net_slirp_hostfwd_remove(Monitor *mon, const QDict *qdict);
 void net_slirp_redir(const char *redir_str);
 void net_cleanup(void);
 void net_client_check(void);
diff --git a/sysemu.h b/sysemu.h
index 22df5c1..1123720 100644
--- a/sysemu.h
+++ b/sysemu.h
@@ -208,8 +208,7 @@ void destroy_nic(dev_match_fn *match_fn, void *arg);
 void destroy_bdrvs(dev_match_fn *match_fn, void *arg);
 
 /* pci-hotplug */
-void pci_device_hot_add(Monitor *mon, const char *pci_addr, const char *type,
-                        const char *opts);
+void pci_device_hot_add(Monitor *mon, const QDict *qdict);
 void drive_hot_add(Monitor *mon, const QDict *qdict);
 void pci_device_hot_remove(Monitor *mon, const char *pci_addr);
 void do_pci_device_hot_remove(Monitor *mon, const QDict *qdict);
