diff --git a/package.json b/package.json
index d050797..1059d27 100644
--- a/package.json
+++ b/package.json
@@ -8,15 +8,20 @@
     "@commitlint/cli": "^19.8.1",
     "@commitlint/config-conventional": "^19.8.1",
     "@types/bun": "latest",
+    "@types/react-dom": "^19.1.7",
     "husky": "^9.1.7",
-    "lint-staged": "^16.1.5"
+    "lint-staged": "^16.1.5",
+    "react": "^19.1.1",
+    "react-dom": "^19.1.1",
+    "zod": "^4.0.17",
+    "zustand": "^5.0.7"
   },
   "peerDependencies": {
     "typescript": "^5"
   },
   "scripts": {
     "prepare": "husky",
-    "dev": "bun build --watch src/index.ts   --outdir ./dist --target browser",
-    "build": "bun build src/index.ts   --outdir ./dist --target browser --minify"
+    "dev": "bun build --watch src/index.ts --outdir ./dist --target browser",
+    "build": "bun build src/index.ts --outdir ./dist --target browser --minify"
   }
 }
diff --git a/src/constants.ts b/src/constants.ts
new file mode 100644
index 0000000..a90d0dc
--- /dev/null
+++ b/src/constants.ts
@@ -0,0 +1 @@
+export const MODULE_NAME = 'st-randomness-helpers'
diff --git a/src/store/configSlice.ts b/src/store/configSlice.ts
new file mode 100644
index 0000000..1a99bef
--- /dev/null
+++ b/src/store/configSlice.ts
@@ -0,0 +1,36 @@
+import type { StateCreator } from 'zustand'
+import { MODULE_NAME } from '@/constants'
+
+export interface Config {
+  wordLists: Record<string, string[]>
+}
+
+export interface ConfigSlice extends Config {
+  addWordList: (name: string, words: string[]) => void
+  updateWordList: (name: string, words: string[]) => void
+  removeWordList: (name: string) => void
+}
+
+export const createConfigSlice: StateCreator<ConfigSlice> = (set) => {
+  const context = SillyTavern.getContext()
+  // biome-ignore lint/suspicious/noExplicitAny: SillyTavern's extensionSettings is not properly typed
+  const extensionSettings: Record<string, any> = context.extensionSettings
+
+  const settings: Config =
+    extensionSettings[MODULE_NAME] === undefined
+      ? { wordLists: {} }
+      : extensionSettings[MODULE_NAME]
+
+  return {
+    wordLists: settings.wordLists,
+    addWordList: (name, words) =>
+      set({ wordLists: { ...settings.wordLists, [name]: words } }),
+    updateWordList: (name, words) =>
+      set({ wordLists: { ...settings.wordLists, [name]: words } }),
+    removeWordList: (name) => {
+      const newWordLists = { ...settings.wordLists }
+      delete newWordLists[name]
+      set({ wordLists: newWordLists })
+    }
+  }
+}
diff --git a/src/store/index.ts b/src/store/index.ts
new file mode 100644
index 0000000..a269723
--- /dev/null
+++ b/src/store/index.ts
@@ -0,0 +1,18 @@
+import { createStore } from 'zustand'
+import { subscribeWithSelector } from 'zustand/middleware'
+import { MODULE_NAME } from '@/constants'
+import { type ConfigSlice, createConfigSlice } from '@/store/configSlice'
+
+export const useStore = createStore<ConfigSlice>()(
+  subscribeWithSelector(createConfigSlice)
+)
+
+useStore.subscribe(
+  (state) => state.wordLists,
+  (wordLists) => {
+    const context = SillyTavern.getContext()
+    // biome-ignore lint/suspicious/noExplicitAny: SillyTavern's extensionSettings is not properly typed
+    const extensionSettings: Record<string, any> = context.extensionSettings
+    extensionSettings[MODULE_NAME] = { wordLists }
+  }
+)