diff --git a/src/adapters/react.ts b/src/adapters/react.ts
index e61dd30..3cd97b2 100644
--- a/src/adapters/react.ts
+++ b/src/adapters/react.ts
@@ -2,6 +2,33 @@ import { useSyncExternalStore } from 'react'
 import { Selector } from '../store' // Store 클래스를 가져올 경로 지정
 import { StoreApi } from '../createStore'
 
+/**
+ * A custom hook that subscribes to a store and triggers a rerendering when the state changes.
+ * You can also provide a selector to subscribe to a partial change of the state.
+ * 
+ * @param store - The state store implementing the `StoreApi` interface.
+ * @param selector - Optional function to select a part of the store's state. Defaults to returning the entire state.
+ * 
+ * @returns The selected state or the entire state if no selector is provided.
+ * 
+ * @example
+ * ```ts
+ * const store = createStore(0);
+ * 
+ * function Component() {
+ *   const count = useReactive(store);
+ *   
+ *   return <div>{count}</div>;
+ * }
+ * 
+ * // With a selector
+ * function SelectedComponent() {
+ *   const evenCount = useReactive(store, (state) => state % 2 === 0);
+ *   
+ *   return <div>{evenCount ? "Even" : "Odd"}</div>;
+ * }
+ * ```
+ */
 export function useReactive<T, O = T>(
   store: StoreApi<T>,
   selector: Selector<T, O> = (state) => state as unknown as O
diff --git a/src/createStore.ts b/src/createStore.ts
index 498a702..9ac7d65 100644
--- a/src/createStore.ts
+++ b/src/createStore.ts
@@ -11,6 +11,25 @@ export interface StoreApi<T> {
 type Action<T> = (set: SetState<T>) => Record<string, (prevState: T) => void>
 type InferActions<T, A> = A extends (set: SetState<T>) => infer U ? U : never
 
+/**
+ * Creates a new store with the given initial state and optional actions.
+ * 
+ * @param initialValue - The initial state value.
+ * @param actions - Optional actions to update the state.
+ * 
+ * @returns The store API and any actions if provided.
+ * 
+ * @example
+ * ```ts
+ * const store = createStore(0, (set) => ({
+ *   inc: (prev) => set(prev + 1),
+ *   dec: (prev) => set(prev - 1),
+ * }));
+ * 
+ * store.inc(); // Increments the state
+ * store.dec(); // Decrements the state
+ * ```
+ */
 export const createStore = <T, A extends Action<T> | undefined>(
   initialValue: T,
   actions?: A
@@ -33,4 +52,4 @@ export const createStore = <T, A extends Action<T> | undefined>(
   return baseStore as A extends Action<T>
     ? StoreApi<T> & InferActions<T, A>
     : StoreApi<T>
-}
+}
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