diff --git a/blocksuite/docs/api/@blocksuite/store/README.md b/blocksuite/docs/api/@blocksuite/store/README.md
index 8c2e86d0bd..4ceae56619 100644
--- a/blocksuite/docs/api/@blocksuite/store/README.md
+++ b/blocksuite/docs/api/@blocksuite/store/README.md
@@ -11,6 +11,11 @@
 - [Extension](classes/Extension.md)
 - [StoreExtension](classes/StoreExtension.md)
 
+## Reactive
+
+- [Boxed](classes/Boxed.md)
+- [Text](classes/Text.md)
+
 ## Store
 
 - [Store](classes/Store.md)
diff --git a/blocksuite/docs/api/@blocksuite/store/classes/Boxed.md b/blocksuite/docs/api/@blocksuite/store/classes/Boxed.md
new file mode 100644
index 0000000000..c60c56f98f
--- /dev/null
+++ b/blocksuite/docs/api/@blocksuite/store/classes/Boxed.md
@@ -0,0 +1,139 @@
+[**@blocksuite/store**](../../../@blocksuite/store/README.md)
+
+***
+
+[BlockSuite API Documentation](../../../README.md) / [@blocksuite/store](../README.md) / Boxed
+
+# Class: Boxed\<Value\>
+
+Boxed is to store raw data in Yjs.
+By default, store will try to convert a object to a Y.Map.
+If you want to store a raw object for you want to manipulate the Y.Map directly, you can use Boxed.
+
+> [!NOTE]
+> Please notice that the data will be stored in Y.Map anyway so it can not hold data structure like function.
+
+## Example
+
+```ts
+const boxedObject = new Boxed({ a: 1, b: 2 });
+const boxedYMap = new Boxed(new Y.Map());
+boxedObject.getValue().a; // 1
+boxedYMap.getValue().set('a', 1);
+boxedObject.setValue({ foo: 'bar' });
+```
+
+## Type Param
+
+The type of the value stored in the Boxed.
+
+## Type Parameters
+
+### Value
+
+`Value` = `unknown`
+
+## Methods
+
+### getValue()
+
+> **getValue**(): `undefined` \| `Value`
+
+Get the current value of the Boxed.
+
+#### Returns
+
+`undefined` \| `Value`
+
+***
+
+### setValue()
+
+> **setValue**(`value`): `Value`
+
+Replace the current value of the Boxed.
+
+#### Parameters
+
+##### value
+
+`Value`
+
+The new value to set.
+
+#### Returns
+
+`Value`
+
+***
+
+### from()
+
+> `static` **from**\<`Value`\>(`map`): `Boxed`\<`Value`\>
+
+Create a Boxed from a Y.Map.
+It is useful when you sync a Y.Map from remote.
+
+#### Type Parameters
+
+##### Value
+
+`Value`
+
+The type of the value.
+
+#### Parameters
+
+##### map
+
+`YMap`\<`unknown`\>
+
+#### Returns
+
+`Boxed`\<`Value`\>
+
+#### Example
+
+```ts
+const doc1 = new Y.Doc();
+const doc2 = new Y.Doc();
+keepSynced(doc1, doc2);
+
+const data1 = doc1.getMap('data');
+const boxed1 = new Boxed({ a: 1, b: 2 });
+data1.set('boxed', boxed1.yMap);
+
+const data2 = doc2.getMap('data');
+const boxed2 = Boxed.from<{ a: number; b: number }>(data2.get('boxed'));
+```
+
+***
+
+### is()
+
+> `static` **is**(`value`): `value is Boxed<unknown>`
+
+Check if a value is a Boxed.
+
+#### Parameters
+
+##### value
+
+`unknown`
+
+#### Returns
+
+`value is Boxed<unknown>`
+
+#### Example
+
+```ts
+const doc = new Y.Doc();
+
+const data = doc.getMap('data');
+const boxed = new Boxed({ a: 1, b: 2 });
+Boxed.is(boxed); // true
+
+data.set('boxed', boxed.yMap);
+Boxed.is(data.get('boxed)); // true
+```
diff --git a/blocksuite/docs/api/@blocksuite/store/classes/Text.md b/blocksuite/docs/api/@blocksuite/store/classes/Text.md
new file mode 100644
index 0000000000..666e09fd81
--- /dev/null
+++ b/blocksuite/docs/api/@blocksuite/store/classes/Text.md
@@ -0,0 +1,392 @@
+[**@blocksuite/store**](../../../@blocksuite/store/README.md)
+
+***
+
+[BlockSuite API Documentation](../../../README.md) / [@blocksuite/store](../README.md) / Text
+
+# Class: Text
+
+Text is an abstraction of Y.Text.
+It provides useful methods to manipulate the text content.
+
+## Example
+
+```ts
+const text = new Text('Hello, world!');
+text.insert(' blocksuite', 7);
+text.delete(7, 1);
+text.format(7, 1, { bold: true });
+text.join(new Text(' blocksuite'));
+text.split(7, 1);
+```
+
+Text [delta](https://docs.yjs.dev/api/delta-format) is a format from Y.js.
+
+## Constructors
+
+### new Text()
+
+> **new Text**(`input`?): `Text`
+
+#### Parameters
+
+##### input?
+
+The input can be a string, a Y.Text instance, or an array of DeltaInsert.
+
+`string` | `YText` | `DeltaInsert`[]
+
+#### Returns
+
+`Text`
+
+## Accessors
+
+### deltas$
+
+#### Get Signature
+
+> **get** **deltas$**(): `Signal`\<`DeltaOperation`[]\>
+
+Get the text delta as a signal.
+
+##### Returns
+
+`Signal`\<`DeltaOperation`[]\>
+
+## Methods
+
+### applyDelta()
+
+> **applyDelta**(`delta`): `void`
+
+Apply a delta to the text.
+
+#### Parameters
+
+##### delta
+
+`DeltaOperation`[]
+
+The delta to apply.
+
+#### Returns
+
+`void`
+
+#### Example
+
+```ts
+const text = new Text('Hello, world!');
+text.applyDelta([{insert: ' blocksuite', attributes: { bold: true }}]);
+```
+
+***
+
+### clear()
+
+> **clear**(): `void`
+
+Clear the text content.
+
+#### Returns
+
+`void`
+
+***
+
+### clone()
+
+> **clone**(): `Text`
+
+Clone the text to a new Text instance.
+
+#### Returns
+
+`Text`
+
+A new Text instance.
+
+***
+
+### delete()
+
+> **delete**(`index`, `length`): `void`
+
+Delete the text content.
+
+#### Parameters
+
+##### index
+
+`number`
+
+The index to delete.
+
+##### length
+
+`number`
+
+The length to delete.
+
+#### Returns
+
+`void`
+
+***
+
+### format()
+
+> **format**(`index`, `length`, `format`): `void`
+
+Format the text content.
+
+#### Parameters
+
+##### index
+
+`number`
+
+The index to format.
+
+##### length
+
+`number`
+
+The length to format.
+
+##### format
+
+`Record`\<`string`, `unknown`\>
+
+The format to apply.
+
+#### Returns
+
+`void`
+
+#### Example
+
+```ts
+const text = new Text('Hello, world!');
+text.format(7, 1, { bold: true });
+```
+
+***
+
+### insert()
+
+> **insert**(`content`, `index`, `attributes`?): `void`
+
+Insert content at the specified index.
+
+#### Parameters
+
+##### content
+
+`string`
+
+The content to insert.
+
+##### index
+
+`number`
+
+The index to insert.
+
+##### attributes?
+
+`Record`\<`string`, `unknown`\>
+
+#### Returns
+
+`void`
+
+#### Example
+
+```ts
+const text = new Text('Hello, world!');
+text.insert(' blocksuite', 7);
+```
+
+***
+
+### join()
+
+> **join**(`other`): `void`
+
+Join current text with another text.
+
+#### Parameters
+
+##### other
+
+`Text`
+
+The other text to join.
+
+#### Returns
+
+`void`
+
+#### Example
+
+```ts
+const text = new Text('Hello, world!');
+const other = new Text(' blocksuite');
+text.join(other);
+```
+
+***
+
+### replace()
+
+> **replace**(`index`, `length`, `content`, `attributes`?): `void`
+
+Replace the text content with a new content.
+
+#### Parameters
+
+##### index
+
+`number`
+
+The index to replace.
+
+##### length
+
+`number`
+
+The length to replace.
+
+##### content
+
+`string`
+
+The content to replace.
+
+##### attributes?
+
+`Record`\<`string`, `unknown`\>
+
+The attributes to replace.
+
+#### Returns
+
+`void`
+
+#### Example
+
+```ts
+const text = new Text('Hello, world!');
+text.replace(7, 1, ' blocksuite');
+```
+
+***
+
+### sliceToDelta()
+
+> **sliceToDelta**(`begin`, `end`?): `DeltaOperation`[]
+
+Slice the text to a delta.
+
+#### Parameters
+
+##### begin
+
+`number`
+
+The begin index.
+
+##### end?
+
+`number`
+
+The end index.
+
+#### Returns
+
+`DeltaOperation`[]
+
+The delta of the sliced text.
+
+***
+
+### split()
+
+> **split**(`index`, `length`): `Text`
+
+Split the text into another Text.
+
+#### Parameters
+
+##### index
+
+`number`
+
+The index to split.
+
+##### length
+
+`number` = `0`
+
+The length to split.
+
+#### Returns
+
+`Text`
+
+The right part of the text.
+
+#### Example
+
+```ts
+const text = new Text('Hello, world!');
+text.split(7, 1);
+```
+
+NOTE: The string included in [index, index + length) will be deleted.
+
+Here are three cases for point position(index + length):
+
+```
+[{insert: 'abc', ...}, {insert: 'def', ...}, {insert: 'ghi', ...}]
+1. abc|de|fghi
+   left: [{insert: 'abc', ...}]
+   right: [{insert: 'f', ...}, {insert: 'ghi', ...}]
+2. abc|def|ghi
+   left: [{insert: 'abc', ...}]
+   right: [{insert: 'ghi', ...}]
+3. abc|defg|hi
+   left: [{insert: 'abc', ...}]
+   right: [{insert: 'hi', ...}]
+```
+
+***
+
+### toDelta()
+
+> **toDelta**(): `DeltaOperation`[]
+
+Get the text delta.
+
+#### Returns
+
+`DeltaOperation`[]
+
+The delta of the text.
+
+***
+
+### toString()
+
+> **toString**(): `string`
+
+Get the text content as a string.
+In most cases, you should not use this method. It will lose the delta attributes information.
+
+#### Returns
+
+`string`
+
+The text content.
diff --git a/blocksuite/docs/api/@blocksuite/store/interfaces/StoreSlots.md b/blocksuite/docs/api/@blocksuite/store/interfaces/StoreSlots.md
index 8b869a5bce..46c8c16a8f 100644
--- a/blocksuite/docs/api/@blocksuite/store/interfaces/StoreSlots.md
+++ b/blocksuite/docs/api/@blocksuite/store/interfaces/StoreSlots.md
@@ -23,6 +23,13 @@ You can also use rxjs operators to handle the events.
 
 > **blockUpdated**: `Subject`\<`StoreBlockUpdatedPayloads`\>
 
+This fires when a block is updated via API call or has just been updated from existing ydoc.
+
+The payload can have three types:
+- add: When a new block is added
+- delete: When a block is removed
+- update: When a block's properties are modified
+
 ***
 
 ### historyUpdated
diff --git a/blocksuite/framework/store/src/model/store/store.ts b/blocksuite/framework/store/src/model/store/store.ts
index 22ce5261e5..8045723d9d 100644
--- a/blocksuite/framework/store/src/model/store/store.ts
+++ b/blocksuite/framework/store/src/model/store/store.ts
@@ -151,8 +151,6 @@ export type StoreSlots = Doc['slots'] & {
    */
   rootDeleted: Subject<string>;
   /**
-   *
-   * @summary
    * This fires when a block is updated via API call or has just been updated from existing ydoc.
    *
    * The payload can have three types:
diff --git a/blocksuite/framework/store/src/reactive/boxed.ts b/blocksuite/framework/store/src/reactive/boxed.ts
index 11f56a8733..9f0adf875b 100644
--- a/blocksuite/framework/store/src/reactive/boxed.ts
+++ b/blocksuite/framework/store/src/reactive/boxed.ts
@@ -4,35 +4,107 @@ import { NATIVE_UNIQ_IDENTIFIER } from '../consts.js';
 
 export type OnBoxedChange = (data: unknown, isLocal: boolean) => void;
 
-export class Boxed<T = unknown> {
-  static from = <T>(map: Y.Map<T>, onChange?: OnBoxedChange): Boxed<T> => {
-    return new Boxed<T>(map.get('value') as T, onChange);
+/**
+ * Boxed is to store raw data in Yjs.
+ * By default, store will try to convert a object to a Y.Map.
+ * If you want to store a raw object for you want to manipulate the Y.Map directly, you can use Boxed.
+ *
+ * > [!NOTE]
+ * > Please notice that the data will be stored in Y.Map anyway so it can not hold data structure like function.
+ *
+ * @example
+ * ```ts
+ * const boxedObject = new Boxed({ a: 1, b: 2 });
+ * const boxedYMap = new Boxed(new Y.Map());
+ * boxedObject.getValue().a; // 1
+ * boxedYMap.getValue().set('a', 1);
+ * boxedObject.setValue({ foo: 'bar' });
+ * ```
+ *
+ * @typeParam T - The type of the value stored in the Boxed.
+ *
+ * @category Reactive
+ */
+export class Boxed<Value = unknown> {
+  /**
+   * Create a Boxed from a Y.Map.
+   * It is useful when you sync a Y.Map from remote.
+   *
+   * @typeParam Value - The type of the value.
+   *
+   * @example
+   * ```ts
+   * const doc1 = new Y.Doc();
+   * const doc2 = new Y.Doc();
+   * keepSynced(doc1, doc2);
+   *
+   * const data1 = doc1.getMap('data');
+   * const boxed1 = new Boxed({ a: 1, b: 2 });
+   * data1.set('boxed', boxed1.yMap);
+   *
+   * const data2 = doc2.getMap('data');
+   * const boxed2 = Boxed.from<{ a: number; b: number }>(data2.get('boxed'));
+   * ```
+   */
+  static from = <Value>(
+    map: Y.Map<unknown>,
+    /** @internal */
+    onChange?: OnBoxedChange
+  ): Boxed<Value> => {
+    const boxed = new Boxed<Value>(map.get('value') as Value);
+    if (onChange) {
+      boxed.bind(onChange);
+    }
+    return boxed;
   };
 
+  /**
+   * Check if a value is a Boxed.
+   *
+   * @example
+   * ```ts
+   * const doc = new Y.Doc();
+   *
+   * const data = doc.getMap('data');
+   * const boxed = new Boxed({ a: 1, b: 2 });
+   * Boxed.is(boxed); // true
+   *
+   * data.set('boxed', boxed.yMap);
+   * Boxed.is(data.get('boxed)); // true
+   * ```
+   */
   static is = (value: unknown): value is Boxed => {
     return (
       value instanceof Y.Map && value.get('type') === NATIVE_UNIQ_IDENTIFIER
     );
   };
 
-  private readonly _map: Y.Map<T>;
+  private readonly _map: Y.Map<Value>;
 
   private _onChange?: OnBoxedChange;
 
+  /**
+   * Get the current value of the Boxed.
+   */
   getValue = () => {
     return this._map.get('value');
   };
 
-  setValue = (value: T) => {
+  /**
+   * Replace the current value of the Boxed.
+   *
+   * @param value - The new value to set.
+   */
+  setValue = (value: Value) => {
     return this._map.set('value', value);
   };
 
+  /** @internal */
   get yMap() {
     return this._map;
   }
 
-  constructor(value: T, onChange?: OnBoxedChange) {
-    this._onChange = onChange;
+  constructor(value: Value) {
     if (
       value instanceof Y.Map &&
       value.doc &&
@@ -41,7 +113,7 @@ export class Boxed<T = unknown> {
       this._map = value;
     } else {
       this._map = new Y.Map();
-      this._map.set('type', NATIVE_UNIQ_IDENTIFIER as T);
+      this._map.set('type', NATIVE_UNIQ_IDENTIFIER as Value);
       this._map.set('value', value);
     }
     this._map.observeDeep(events => {
@@ -58,6 +130,7 @@ export class Boxed<T = unknown> {
     });
   }
 
+  /** @internal */
   bind(onChange: OnBoxedChange) {
     this._onChange = onChange;
   }
diff --git a/blocksuite/framework/store/src/reactive/text.ts b/blocksuite/framework/store/src/reactive/text.ts
index 2bf3300452..1e49f14d21 100644
--- a/blocksuite/framework/store/src/reactive/text.ts
+++ b/blocksuite/framework/store/src/reactive/text.ts
@@ -1,5 +1,5 @@
 import { BlockSuiteError, ErrorCode } from '@blocksuite/global/exceptions';
-import type { BaseTextAttributes, DeltaInsert } from '@blocksuite/inline';
+import type { DeltaInsert } from '@blocksuite/inline';
 import { type Signal, signal } from '@preact/signals-core';
 import * as Y from 'yjs';
 
@@ -15,6 +15,24 @@ export type DeltaOperation = {
 
 export type OnTextChange = (data: Y.Text, isLocal: boolean) => void;
 
+/**
+ * Text is an abstraction of Y.Text.
+ * It provides useful methods to manipulate the text content.
+ *
+ * @example
+ * ```ts
+ * const text = new Text('Hello, world!');
+ * text.insert(' blocksuite', 7);
+ * text.delete(7, 1);
+ * text.format(7, 1, { bold: true });
+ * text.join(new Text(' blocksuite'));
+ * text.split(7, 1);
+ * ```
+ *
+ * Text {@link https://docs.yjs.dev/api/delta-format delta} is a format from Y.js.
+ *
+ * @category Reactive
+ */
 export class Text {
   private readonly _deltas$: Signal<DeltaOperation[]>;
 
@@ -24,6 +42,9 @@ export class Text {
 
   private readonly _yText: Y.Text;
 
+  /**
+   * Get the text delta as a signal.
+   */
   get deltas$() {
     return this._deltas$;
   }
@@ -36,11 +57,10 @@ export class Text {
     return this._yText;
   }
 
-  constructor(
-    input?: Y.Text | string | DeltaInsert[],
-    onChange?: OnTextChange
-  ) {
-    this._onChange = onChange;
+  /**
+   * @param input - The input can be a string, a Y.Text instance, or an array of DeltaInsert.
+   */
+  constructor(input?: Y.Text | string | DeltaInsert[]) {
     let length = 0;
     if (typeof input === 'string') {
       const text = input.replaceAll('\r\n', '\n');
@@ -94,16 +114,33 @@ export class Text {
     }, doc.clientID);
   }
 
+  /**
+   * Apply a delta to the text.
+   *
+   * @param delta - The delta to apply.
+   *
+   * @example
+   * ```ts
+   * const text = new Text('Hello, world!');
+   * text.applyDelta([{insert: ' blocksuite', attributes: { bold: true }}]);
+   * ```
+   */
   applyDelta(delta: DeltaOperation[]) {
     this._transact(() => {
       this._yText?.applyDelta(delta);
     });
   }
 
+  /**
+   * @internal
+   */
   bind(onChange?: OnTextChange) {
     this._onChange = onChange;
   }
 
+  /**
+   * Clear the text content.
+   */
   clear() {
     if (!this._yText.length) {
       return;
@@ -113,10 +150,23 @@ export class Text {
     });
   }
 
+  /**
+   * Clone the text to a new Text instance.
+   *
+   * @returns A new Text instance.
+   */
   clone() {
-    return new Text(this._yText.clone(), this._onChange);
+    const text = new Text(this._yText.clone());
+    text.bind(this._onChange);
+    return text;
   }
 
+  /**
+   * Delete the text content.
+   *
+   * @param index - The index to delete.
+   * @param length - The length to delete.
+   */
   delete(index: number, length: number) {
     if (length === 0) {
       return;
@@ -137,7 +187,20 @@ export class Text {
     });
   }
 
-  format(index: number, length: number, format: any) {
+  /**
+   * Format the text content.
+   *
+   * @param index - The index to format.
+   * @param length - The length to format.
+   * @param format - The format to apply.
+   *
+   * @example
+   * ```ts
+   * const text = new Text('Hello, world!');
+   * text.format(7, 1, { bold: true });
+   * ```
+   */
+  format(index: number, length: number, format: Record<string, unknown>) {
     if (length === 0) {
       return;
     }
@@ -157,6 +220,18 @@ export class Text {
     });
   }
 
+  /**
+   * Insert content at the specified index.
+   *
+   * @param content - The content to insert.
+   * @param index - The index to insert.
+   *
+   * @example
+   * ```ts
+   * const text = new Text('Hello, world!');
+   * text.insert(' blocksuite', 7);
+   * ```
+   */
   insert(content: string, index: number, attributes?: Record<string, unknown>) {
     if (!content.length) {
       return;
@@ -177,6 +252,18 @@ export class Text {
     });
   }
 
+  /**
+   * Join current text with another text.
+   *
+   * @param other - The other text to join.
+   *
+   * @example
+   * ```ts
+   * const text = new Text('Hello, world!');
+   * const other = new Text(' blocksuite');
+   * text.join(other);
+   * ```
+   */
   join(other: Text) {
     if (!other || !other.toDelta().length) {
       return;
@@ -189,11 +276,25 @@ export class Text {
     });
   }
 
+  /**
+   * Replace the text content with a new content.
+   *
+   * @param index - The index to replace.
+   * @param length - The length to replace.
+   * @param content - The content to replace.
+   * @param attributes - The attributes to replace.
+   *
+   * @example
+   * ```ts
+   * const text = new Text('Hello, world!');
+   * text.replace(7, 1, ' blocksuite');
+   * ```
+   */
   replace(
     index: number,
     length: number,
     content: string,
-    attributes?: BaseTextAttributes
+    attributes?: Record<string, unknown>
   ) {
     if (index < 0 || length < 0 || index + length > this._yText.length) {
       throw new BlockSuiteError(
@@ -213,6 +314,14 @@ export class Text {
     });
   }
 
+  /**
+   * Slice the text to a delta.
+   *
+   * @param begin - The begin index.
+   * @param end - The end index.
+   *
+   * @returns The delta of the sliced text.
+   */
   sliceToDelta(begin: number, end?: number): DeltaOperation[] {
     const result: DeltaOperation[] = [];
     if (end && begin >= end) {
@@ -269,9 +378,24 @@ export class Text {
   }
 
   /**
+   * Split the text into another Text.
+   *
+   * @param index - The index to split.
+   * @param length - The length to split.
+   *
+   * @returns The right part of the text.
+   *
+   * @example
+   * ```ts
+   * const text = new Text('Hello, world!');
+   * text.split(7, 1);
+   * ```
+   *
    * NOTE: The string included in [index, index + length) will be deleted.
    *
    * Here are three cases for point position(index + length):
+   *
+   * ```
    * [{insert: 'abc', ...}, {insert: 'def', ...}, {insert: 'ghi', ...}]
    * 1. abc|de|fghi
    *    left: [{insert: 'abc', ...}]
@@ -282,6 +406,7 @@ export class Text {
    * 3. abc|defg|hi
    *    left: [{insert: 'abc', ...}]
    *    right: [{insert: 'hi', ...}]
+   * ```
    */
   split(index: number, length = 0): Text {
     if (index < 0 || length < 0 || index + length > this._yText.length) {
@@ -328,15 +453,27 @@ export class Text {
     this.delete(index, this.length - index);
     const rightYText = new Y.Text();
     rightYText.applyDelta(rightDeltas);
-    const rightText = new Text(rightYText, this._onChange);
+    const rightText = new Text(rightYText);
+    rightText.bind(this._onChange);
 
     return rightText;
   }
 
+  /**
+   * Get the text delta.
+   *
+   * @returns The delta of the text.
+   */
   toDelta(): DeltaOperation[] {
     return this._yText?.toDelta() || [];
   }
 
+  /**
+   * Get the text content as a string.
+   * In most cases, you should not use this method. It will lose the delta attributes information.
+   *
+   * @returns The text content.
+   */
   toString() {
     return this._yText?.toString() || '';
   }