diff --git a/lib/bot.mjs b/lib/bot.mjs
index 2df2a80..958c937 100644
--- a/lib/bot.mjs
+++ b/lib/bot.mjs
@@ -775,13 +775,18 @@ const subconscious = [{
     },
 }, {
     run: true, priority: -8840, name: 'configuration', func: async (ctx, next) => {
+        let parsed = null;
         switch (ctx.cmd.cmd) {
+            case 'toggle':
+                parsed = {};
+                Object.keys(parseArgs(ctx.cmd.args)).map(x =>
+                    parsed[x] = !ctx.session.config[x]);
             case 'set':
                 try {
                     const _config = {
                         ...ctx.session.config = {
                             ...ctx.session.config,
-                            ...ctx.config = parseArgs(ctx.cmd.args),
+                            ...ctx.config = parsed || parseArgs(ctx.cmd.args),
                         }
                     };
                     assert(countKeys(ctx.config), 'No option matched.');
@@ -804,6 +809,7 @@ const subconscious = [{
         'Configure the bot by UNIX/Linux CLI style.',
         'Using [node:util.parseArgs](https://nodejs.org/docs/latest-v21.x/api/util.html#utilparseargsconfig) to parse arguments.',
     ]), cmds: {
+        toggle: 'Toggle configurations. Only works for boolean values.',
         set: 'Usage: /set --`OPTION` `VALUE` -`SHORT`',
         reset: 'Reset all configurations. Only erase `session.config`.',
         factory: 'Factory reset all memory areas. Erase the whole `session`.',