diff --git a/src/client/pages/scratchpad.vue b/src/client/pages/scratchpad.vue
index 10292e60c..63ce5d99d 100644
--- a/src/client/pages/scratchpad.vue
+++ b/src/client/pages/scratchpad.vue
@@ -72,7 +72,9 @@ export default Vue.extend({
 	methods: {
 		async run() {
 			this.logs = [];
-			const aiscript = new AiScript(createAiScriptEnv(this), {
+			const aiscript = new AiScript(createAiScriptEnv(this, {
+				storageKey: 'scratchpad'
+			}), {
 				in: (q) => {
 					return new Promise(ok => {
 						this.$root.dialog({
diff --git a/src/client/scripts/create-aiscript-env.ts b/src/client/scripts/create-aiscript-env.ts
index 75f402e13..3f7b0c80b 100644
--- a/src/client/scripts/create-aiscript-env.ts
+++ b/src/client/scripts/create-aiscript-env.ts
@@ -1,6 +1,6 @@
 import { utils, values } from '@syuilo/aiscript';
 
-export function createAiScriptEnv(vm) {
+export function createAiScriptEnv(vm, opts) {
 	return {
 		USER_ID: values.STR(vm.$store.state.i.id),
 		USER_USERNAME: values.STR(vm.$store.state.i.username),
@@ -24,5 +24,14 @@ export function createAiScriptEnv(vm) {
 			const res = await vm.$root.api(ep.value, utils.valToJs(param), token || null);
 			return utils.jsToVal(res);
 		}),
+		'Mk:save': values.FN_NATIVE(([key, value]) => {
+			utils.assertString(key);
+			localStorage.setItem('aiscript:' + opts.storageKey + ':' + key.value, JSON.stringify(utils.valToJs(value)));
+			return values.NULL;
+		}),
+		'Mk:load': values.FN_NATIVE(([key]) => {
+			utils.assertString(key);
+			return utils.jsToVal(JSON.parse(localStorage.getItem('aiscript:' + opts.storageKey + ':' + key.value)));
+		}),
 	};
 }