diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index 2eaae7b2..a60ea506 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+### 2.22.0
+
+- `New` - `onChange` callback now receive Block API object of affected block
+
 ### 2.21.0
 
 - `New` - Blocks now have unique ids [#873](https://github.com/codex-team/editor.js/issues/873)
diff --git a/docs/installation.md b/docs/installation.md
index 6660ce80..29565665 100644
--- a/docs/installation.md
+++ b/docs/installation.md
@@ -193,7 +193,7 @@ var editor = new EditorJS({
    /**
     * onChange callback
     */
-   onChange: () => {console.log('Now I know that Editor\'s content changed!')}
+   onChange: (editorAPI, affectedBlockAPI) => {console.log('Now I know that Editor\'s content changed!')}
 });
 ```
 
diff --git a/example/example-dev.html b/example/example-dev.html
index cc9123f7..4801722f 100644
--- a/example/example-dev.html
+++ b/example/example-dev.html
@@ -319,8 +319,8 @@
       onReady: function(){
         saveButton.click();
       },
-      onChange: function() {
-        console.log('something changed');
+      onChange: function(api, block) {
+        console.log('something changed', block);
       },
     });
 
diff --git a/example/example.html b/example/example.html
index 7de5baeb..abc6a5f6 100644
--- a/example/example.html
+++ b/example/example.html
@@ -281,8 +281,8 @@
       onReady: function(){
         saveButton.click();
       },
-      onChange: function() {
-        console.log('something changed');
+      onChange: function(api, block) {
+        console.log('something changed', block);
       }
     });
 
diff --git a/src/components/block/index.ts b/src/components/block/index.ts
index 18439c9d..fcb8c412 100644
--- a/src/components/block/index.ts
+++ b/src/components/block/index.ts
@@ -18,6 +18,7 @@ import BlockTool from '../tools/block';
 import BlockTune from '../tools/tune';
 import { BlockTuneData } from '../../../types/block-tunes/block-tune-data';
 import ToolsCollection from '../tools/collection';
+import EventsDispatcher from '../utils/events';
 
 /**
  * Interface describes Block class constructor argument
@@ -79,6 +80,11 @@ export enum BlockToolAPI {
   ON_PASTE = 'onPaste',
 }
 
+/**
+ * Names of events supported by Block class
+ */
+type BlockEvents = 'didMutated';
+
 /**
  * @classdesc Abstract Block class that contains Block information, Tool name and Tool class instance
  *
@@ -86,7 +92,7 @@ export enum BlockToolAPI {
  * @property {HTMLElement} holder - Div element that wraps block content with Tool's content. Has `ce-block` CSS class
  * @property {HTMLElement} pluginsContent - HTML content that returns by Tool's render function
  */
-export default class Block {
+export default class Block extends EventsDispatcher<BlockEvents> {
   /**
    * CSS classes for the Block
    *
@@ -207,6 +213,8 @@ export default class Block {
     this.updateCurrentInput();
 
     this.call(BlockToolAPI.UPDATED);
+
+    this.emit('didMutated', this);
   }, this.modificationDebounceTimer);
 
   /**
@@ -230,6 +238,8 @@ export default class Block {
     readOnly,
     tunesData,
   }: BlockConstructorOptions) {
+    super();
+
     this.name = tool.name;
     this.id = id;
     this.settings = tool.settings;
@@ -680,6 +690,8 @@ export default class Block {
    * Call Tool instance destroy method
    */
   public destroy(): void {
+    super.destroy();
+
     if (_.isFunction(this.toolInstance.destroy)) {
       this.toolInstance.destroy();
     }
@@ -777,6 +789,13 @@ export default class Block {
   private addInputEvents(): void {
     this.inputs.forEach(input => {
       input.addEventListener('focus', this.handleFocus);
+
+      /**
+       * If input is native input add oninput listener to observe changes
+       */
+      if ($.isNativeInput(input)) {
+        input.addEventListener('input', this.didMutated);
+      }
     });
   }
 
@@ -786,6 +805,10 @@ export default class Block {
   private removeInputEvents(): void {
     this.inputs.forEach(input => {
       input.removeEventListener('focus', this.handleFocus);
+
+      if ($.isNativeInput(input)) {
+        input.removeEventListener('input', this.didMutated);
+      }
     });
   }
 }
diff --git a/src/components/modules/api/sanitizer.ts b/src/components/modules/api/sanitizer.ts
index b0ce0ef0..79c91656 100644
--- a/src/components/modules/api/sanitizer.ts
+++ b/src/components/modules/api/sanitizer.ts
@@ -11,7 +11,7 @@ export default class SanitizerAPI extends Module {
   /**
    * Available methods
    *
-   * @returns {Sanitizer}
+   * @returns {SanitizerConfig}
    */
   public get methods(): ISanitizer {
     return {
diff --git a/src/components/modules/blockManager.ts b/src/components/modules/blockManager.ts
index e82ba86f..cb2e1fc7 100644
--- a/src/components/modules/blockManager.ts
+++ b/src/components/modules/blockManager.ts
@@ -13,6 +13,7 @@ import * as _ from '../utils';
 import Blocks from '../blocks';
 import { BlockToolData, PasteEvent } from '../../../types';
 import { BlockTuneData } from '../../../types/block-tunes/block-tune-data';
+import BlockAPI from '../block/api';
 
 /**
  * @typedef {BlockManager} BlockManager
@@ -290,6 +291,11 @@ export default class BlockManager extends Module {
 
     this._blocks.insert(newIndex, block, replace);
 
+    /**
+     * Force call of didMutated event on Block insertion
+     */
+    this.blockDidMutated(block);
+
     if (needToFocus) {
       this.currentBlockIndex = newIndex;
     } else if (newIndex <= this.currentBlockIndex) {
@@ -361,6 +367,11 @@ export default class BlockManager extends Module {
 
     this._blocks[index] = block;
 
+    /**
+     * Force call of didMutated event on Block insertion
+     */
+    this.blockDidMutated(block);
+
     if (needToFocus) {
       this.currentBlockIndex = index;
     } else if (index <= this.currentBlockIndex) {
@@ -426,8 +437,15 @@ export default class BlockManager extends Module {
       throw new Error('Can\'t find a Block to remove');
     }
 
+    const blockToRemove = this._blocks[index];
+
     this._blocks.remove(index);
 
+    /**
+     * Force call of didMutated event on Block removal
+     */
+    this.blockDidMutated(blockToRemove);
+
     if (this.currentBlockIndex >= index) {
       this.currentBlockIndex--;
     }
@@ -689,6 +707,11 @@ export default class BlockManager extends Module {
 
     /** Now actual block moved so that current block index changed */
     this.currentBlockIndex = toIndex;
+
+    /**
+     * Force call of didMutated event on Block movement
+     */
+    this.blockDidMutated(this.currentBlock);
   }
 
   /**
@@ -754,6 +777,8 @@ export default class BlockManager extends Module {
     this.readOnlyMutableListeners.on(block.holder, 'dragleave', (event: DragEvent) => {
       BlockEvents.dragLeave(event);
     });
+
+    block.on('didMutated', (affectedBlock: Block) => this.blockDidMutated(affectedBlock));
   }
 
   /**
@@ -789,4 +814,15 @@ export default class BlockManager extends Module {
   private validateIndex(index: number): boolean {
     return !(index < 0 || index >= this._blocks.length);
   }
+
+  /**
+   * Block mutation callback
+   *
+   * @param block - mutated block
+   */
+  private blockDidMutated(block: Block): Block {
+    this.Editor.ModificationsObserver.onChange(new BlockAPI(block));
+
+    return block;
+  }
 }
diff --git a/src/components/modules/modificationsObserver.ts b/src/components/modules/modificationsObserver.ts
index 30f5797c..c1fc5123 100644
--- a/src/components/modules/modificationsObserver.ts
+++ b/src/components/modules/modificationsObserver.ts
@@ -1,195 +1,40 @@
-/**
- * @module ModificationsObserver
- *
- * Handles any mutations
- * and gives opportunity to handle outside
- */
-
 import Module from '../__module';
+import { BlockAPI } from '../../../types';
 import * as _ from '../utils';
-import Block from '../block';
 
 /**
- *
+ * Single entry point for Block mutation events
  */
 export default class ModificationsObserver extends Module {
   /**
-   * Debounce Timer
-   *
-   * @type {number}
-   */
-  public static readonly DebounceTimer = 450;
-
-  /**
-   * MutationObserver instance
-   */
-  private observer: MutationObserver;
-
-  /**
-   * Allows to temporary disable mutations handling
+   * Flag shows onChange event is disabled
    */
   private disabled = false;
 
   /**
-   * Used to prevent several mutation callback execution
-   *
-   * @type {Function}
-   */
-  private mutationDebouncer = _.debounce(() => {
-    this.updateNativeInputs();
-
-    if (_.isFunction(this.config.onChange)) {
-      this.config.onChange(this.Editor.API.methods);
-    }
-  }, ModificationsObserver.DebounceTimer);
-
-  /**
-   * Array of native inputs in Blocks.
-   * Changes in native inputs are not handled by modification observer, so we need to set change event listeners on them
-   */
-  private nativeInputs: HTMLElement[] = [];
-
-  /**
-   * Clear timeout and set null to mutationDebouncer property
-   */
-  public destroy(): void {
-    this.mutationDebouncer = null;
-    if (this.observer) {
-      this.observer.disconnect();
-    }
-    this.observer = null;
-    this.nativeInputs.forEach((input) => this.listeners.off(input, 'input', this.mutationDebouncer));
-    this.mutationDebouncer = null;
-  }
-
-  /**
-   * Set read-only state
-   *
-   * @param {boolean} readOnlyEnabled - read only flag value
-   */
-  public toggleReadOnly(readOnlyEnabled: boolean): void {
-    if (readOnlyEnabled) {
-      this.disableModule();
-    } else {
-      this.enableModule();
-    }
-  }
-
-  /**
-   * Allows to disable observer,
-   * for example when Editor wants to stealthy mutate DOM
-   */
-  public disable(): void {
-    this.disabled = true;
-  }
-
-  /**
-   * Enables mutation handling
-   * Should be called after .disable()
+   * Enables onChange event
    */
   public enable(): void {
     this.disabled = false;
   }
 
   /**
-   * setObserver
-   *
-   * sets 'DOMSubtreeModified' listener on Editor's UI.nodes.redactor
-   * so that User can handle outside from API
+   * Disables onChange event
    */
-  private setObserver(): void {
-    const { UI } = this.Editor;
-    const observerOptions = {
-      childList: true,
-      attributes: true,
-      subtree: true,
-      characterData: true,
-      characterDataOldValue: true,
-    };
-
-    this.observer = new MutationObserver((mutationList, observer) => {
-      this.mutationHandler(mutationList, observer);
-    });
-    this.observer.observe(UI.nodes.redactor, observerOptions);
+  public disable(): void {
+    this.disabled = true;
   }
 
   /**
-   * MutationObserver events handler
+   * Call onChange event passed to Editor.js configuration
    *
-   * @param {MutationRecord[]} mutationList - list of mutations
-   * @param {MutationObserver} observer - observer instance
+   * @param block - changed Block
    */
-  private mutationHandler(mutationList: MutationRecord[], observer: MutationObserver): void {
-    /**
-     * Skip mutations in stealth mode
-     */
-    if (this.disabled) {
+  public onChange(block: BlockAPI): void {
+    if (this.disabled || !_.isFunction(this.config.onChange)) {
       return;
     }
 
-    /**
-     * We divide two Mutation types:
-     * 1) mutations that concerns client changes: settings changes, symbol added, deletion, insertions and so on
-     * 2) functional changes. On each client actions we set functional identifiers to interact with user
-     */
-    let contentMutated = false;
-
-    mutationList.forEach((mutation) => {
-      switch (mutation.type) {
-        case 'childList':
-        case 'characterData':
-          contentMutated = true;
-          break;
-        case 'attributes':
-          /**
-           * Changes on Element.ce-block usually is functional
-           */
-          if (!(mutation.target as Element).classList.contains(Block.CSS.wrapper)) {
-            contentMutated = true;
-          }
-          break;
-      }
-    });
-
-    /** call once */
-    if (contentMutated) {
-      this.mutationDebouncer();
-    }
-  }
-
-  /**
-   * Gets native inputs and set oninput event handler
-   */
-  private updateNativeInputs(): void {
-    if (this.nativeInputs) {
-      this.nativeInputs.forEach((input) => {
-        this.listeners.off(input, 'input');
-      });
-    }
-
-    this.nativeInputs = Array.from(this.Editor.UI.nodes.redactor.querySelectorAll('textarea, input, select'));
-
-    this.nativeInputs.forEach((input) => this.listeners.on(input, 'input', this.mutationDebouncer));
-  }
-
-  /**
-   * Sets observer and enables it
-   */
-  private enableModule(): void {
-    /**
-     * wait till Browser render Editor's Blocks
-     */
-    window.setTimeout(() => {
-      this.setObserver();
-      this.updateNativeInputs();
-      this.enable();
-    }, 1000);
-  }
-
-  /**
-   * Disables observer
-   */
-  private disableModule(): void {
-    this.disable();
+    this.config.onChange(this.Editor.API.methods, block);
   }
 }
diff --git a/src/components/modules/paste.ts b/src/components/modules/paste.ts
index 61f794af..178e3cc1 100644
--- a/src/components/modules/paste.ts
+++ b/src/components/modules/paste.ts
@@ -639,7 +639,7 @@ export default class Paste extends Module {
    * @param {PasteData} dataToInsert - data of Block to insert
    */
   private async processInlinePaste(dataToInsert: PasteData): Promise<void> {
-    const { BlockManager, Caret, Tools } = this.Editor;
+    const { BlockManager, Caret } = this.Editor;
     const { content } = dataToInsert;
 
     const currentBlockIsDefault = BlockManager.currentBlock && BlockManager.currentBlock.tool.isDefault;
diff --git a/src/components/modules/renderer.ts b/src/components/modules/renderer.ts
index 0e87e751..9aad79ff 100644
--- a/src/components/modules/renderer.ts
+++ b/src/components/modules/renderer.ts
@@ -48,8 +48,15 @@ export default class Renderer extends Module {
   public async render(blocks: OutputBlockData[]): Promise<void> {
     const chainData = blocks.map((block) => ({ function: (): Promise<void> => this.insertBlock(block) }));
 
+    /**
+     * Disable onChange callback on render to not to spam those events
+     */
+    this.Editor.ModificationsObserver.disable();
+
     const sequence = await _.sequence(chainData as _.ChainData[]);
 
+    this.Editor.ModificationsObserver.enable();
+
     this.Editor.UI.checkEmptiness();
 
     return sequence;
diff --git a/src/components/modules/saver.ts b/src/components/modules/saver.ts
index 521dbda5..59725f65 100644
--- a/src/components/modules/saver.ts
+++ b/src/components/modules/saver.ts
@@ -7,7 +7,7 @@
  */
 import Module from '../__module';
 import { OutputData } from '../../../types';
-import { ValidatedData } from '../../../types/data-formats';
+import { SavedData, ValidatedData } from '../../../types/data-formats';
 import Block from '../block';
 import * as _ from '../utils';
 import { sanitizeBlocks } from '../utils/sanitizer';
@@ -28,26 +28,28 @@ export default class Saver extends Module {
    * @returns {OutputData}
    */
   public async save(): Promise<OutputData> {
-    const { BlockManager, ModificationsObserver, Tools } = this.Editor;
+    const { BlockManager, Tools, ModificationsObserver } = this.Editor;
     const blocks = BlockManager.blocks,
         chainData = [];
 
-    /**
-     * Disable modifications observe while saving
-     */
-    ModificationsObserver.disable();
-
     try {
+      /**
+       * Disable onChange callback on save to not to spam those events
+       */
+      ModificationsObserver.disable();
+
       blocks.forEach((block: Block) => {
         chainData.push(this.getSavedData(block));
       });
 
-      const extractedData = await Promise.all(chainData);
+      const extractedData = await Promise.all(chainData) as Array<Pick<SavedData, 'data' | 'tool'>>;
       const sanitizedData = await sanitizeBlocks(extractedData, (name) => {
         return Tools.blockTools.get(name).sanitizeConfig;
       });
 
       return this.makeOutput(sanitizedData);
+    } catch (e) {
+      _.logLabeled(`Saving failed due to the Error %o`, 'error', e);
     } finally {
       ModificationsObserver.enable();
     }
diff --git a/src/components/modules/toolbar/inline.ts b/src/components/modules/toolbar/inline.ts
index 4c3d29b3..9bc788ee 100644
--- a/src/components/modules/toolbar/inline.ts
+++ b/src/components/modules/toolbar/inline.ts
@@ -9,10 +9,8 @@ import { I18nInternalNS } from '../../i18n/namespace-internal';
 import Shortcuts from '../../utils/shortcuts';
 import Tooltip from '../../utils/tooltip';
 import { ModuleConfig } from '../../../types-internal/module-config';
-import EventsDispatcher from '../../utils/events';
 import InlineTool from '../../tools/inline';
 import { CommonInternalSettings } from '../../tools/base';
-import BlockTool from '../../tools/block';
 
 /**
  * Inline Toolbar elements
diff --git a/src/components/utils.ts b/src/components/utils.ts
index 4cc92a31..091bd54a 100644
--- a/src/components/utils.ts
+++ b/src/components/utils.ts
@@ -660,7 +660,7 @@ export function deprecationAssert(condition: boolean, oldProperty: string, newPr
  * @param propertyKey - method or accessor name
  * @param descriptor - property descriptor
  */
-export function cacheable<Target, Value, Arguments extends any[] = any[]>(
+export function cacheable<Target, Value, Arguments extends unknown[] = unknown[]>(
   target: Target,
   propertyKey: string,
   descriptor: PropertyDescriptor
@@ -672,7 +672,7 @@ export function cacheable<Target, Value, Arguments extends any[] = any[]>(
   /**
    * Override get or value descriptor property to cache return value
    *
-   * @param args
+   * @param args - method args
    */
   descriptor[propertyToOverride] = function (...args: Arguments): Value {
     /**
@@ -688,12 +688,12 @@ export function cacheable<Target, Value, Arguments extends any[] = any[]>(
   /**
    * If get accessor has been overridden, we need to override set accessor to clear cache
    *
-   * @param value
+   * @param value - value to set
    */
   if (propertyToOverride === 'get' && descriptor.set) {
     const originalSet = descriptor.set;
 
-    descriptor.set = function (value: any): void {
+    descriptor.set = function (value: unknown): void {
       delete target[cacheKey];
 
       originalSet.apply(this, value);
diff --git a/src/components/utils/events.ts b/src/components/utils/events.ts
index 10d501ec..2db6c68a 100644
--- a/src/components/utils/events.ts
+++ b/src/components/utils/events.ts
@@ -11,7 +11,7 @@
  * @typedef {Events} Events
  * @property {object} subscribers - all subscribers grouped by event name
  */
-export default class EventsDispatcher {
+export default class EventsDispatcher<Events extends string = string> {
   /**
    * Object with events` names as key and array of callback functions as value
    *
@@ -25,7 +25,7 @@ export default class EventsDispatcher {
    * @param {string} eventName - event name
    * @param {Function} callback - subscriber
    */
-  public on(eventName: string, callback: (data: object) => object): void {
+  public on(eventName: Events, callback: (data: object) => object): void {
     if (!(eventName in this.subscribers)) {
       this.subscribers[eventName] = [];
     }
@@ -40,7 +40,7 @@ export default class EventsDispatcher {
    * @param {string} eventName - event name
    * @param {Function} callback - subscriber
    */
-  public once(eventName: string, callback: (data: object) => object): void {
+  public once(eventName: Events, callback: (data: object) => object): void {
     if (!(eventName in this.subscribers)) {
       this.subscribers[eventName] = [];
     }
@@ -67,7 +67,7 @@ export default class EventsDispatcher {
    * @param {string} eventName - event name
    * @param {object} data - subscribers get this data when they were fired
    */
-  public emit(eventName: string, data?: object): void {
+  public emit(eventName: Events, data?: object): void {
     if (!this.subscribers[eventName]) {
       return;
     }
@@ -85,7 +85,7 @@ export default class EventsDispatcher {
    * @param {string} eventName - event name
    * @param {Function} callback - event handler
    */
-  public off(eventName: string, callback: (data: object) => object): void {
+  public off(eventName: Events, callback: (data: object) => object): void {
     for (let i = 0; i < this.subscribers[eventName].length; i++) {
       if (this.subscribers[eventName][i] === callback) {
         delete this.subscribers[eventName][i];
diff --git a/src/components/utils/sanitizer.ts b/src/components/utils/sanitizer.ts
index 692c05b5..5b4bc8a2 100644
--- a/src/components/utils/sanitizer.ts
+++ b/src/components/utils/sanitizer.ts
@@ -1,3 +1,4 @@
+/* eslint-disable @typescript-eslint/no-use-before-define */
 /**
  * CodeX Sanitizer
  *
diff --git a/src/types-internal/editor-modules.d.ts b/src/types-internal/editor-modules.d.ts
index 8d882f4e..95a255cb 100644
--- a/src/types-internal/editor-modules.d.ts
+++ b/src/types-internal/editor-modules.d.ts
@@ -6,7 +6,6 @@ import Toolbox from '../components/modules/toolbar/toolbox';
 import BlockSettings from '../components/modules/toolbar/blockSettings';
 import Paste from '../components/modules/paste';
 import DragNDrop from '../components/modules/dragNDrop';
-import ModificationsObserver from '../components/modules/modificationsObserver';
 import Renderer from '../components/modules/renderer';
 import Tools from '../components/modules/tools';
 import API from '../components/modules/api/index';
@@ -32,6 +31,7 @@ import TooltipAPI from '../components/modules/api/tooltip';
 import ReadOnly from '../components/modules/readonly';
 import ReadOnlyAPI from '../components/modules/api/readonly';
 import I18nAPI from '../components/modules/api/i18n';
+import ModificationsObserver from '../components/modules/modificationsObserver';
 
 export interface EditorModules {
   UI: UI;
@@ -45,7 +45,6 @@ export interface EditorModules {
   ConversionToolbar: ConversionToolbar;
   Paste: Paste;
   DragNDrop: DragNDrop;
-  ModificationsObserver: ModificationsObserver;
   Renderer: Renderer;
   Tools: Tools;
   API: API;
@@ -68,4 +67,5 @@ export interface EditorModules {
   ReadOnly: ReadOnly;
   ReadOnlyAPI: ReadOnlyAPI;
   I18nAPI: I18nAPI;
+  ModificationsObserver: ModificationsObserver;
 }
diff --git a/test/cypress/plugins/index.ts b/test/cypress/plugins/index.ts
index 06d4b245..e3a3c4e3 100644
--- a/test/cypress/plugins/index.ts
+++ b/test/cypress/plugins/index.ts
@@ -1,3 +1,4 @@
+/* eslint-disable @typescript-eslint/no-var-requires */
 /* tslint:disable:no-var-requires */
 /**
  * This file contains connection of Cypres plugins
@@ -6,7 +7,7 @@ const webpackConfig = require('../../../webpack.config.js');
 const preprocessor = require('@cypress/webpack-preprocessor');
 const codeCoverageTask = require('@cypress/code-coverage/task');
 
-module.exports = (on, config): any => {
+module.exports = (on, config): unknown => {
   /**
    * Add Cypress task to get code coverage
    */
diff --git a/test/cypress/support/commands.ts b/test/cypress/support/commands.ts
index fe250e4a..b2a24276 100644
--- a/test/cypress/support/commands.ts
+++ b/test/cypress/support/commands.ts
@@ -1,3 +1,4 @@
+/* eslint-disable @typescript-eslint/no-explicit-any */
 /**
  * This file contains custom commands for Cypress.
  * Also it can override the existing commands.
@@ -40,7 +41,7 @@ Cypress.Commands.add('createEditor', (editorConfig: EditorConfig = {}): Chainabl
 /**
  * Paste command to dispatch paste event
  *
- * @usage
+ * Usage
  * cy.get('div').paste({'text/plain': 'Text', 'text/html': '<b>Text</b>'})
  *
  * @param data - map with MIME type as a key and data as value
@@ -66,7 +67,7 @@ Cypress.Commands.add('paste', {
 /**
  * Copy command to dispatch copy event on subject
  *
- * @usage
+ * Usage:
  * cy.get('div').copy().then(data => {})
  */
 Cypress.Commands.add('copy', { prevSubject: true }, async (subject) => {
@@ -92,7 +93,7 @@ Cypress.Commands.add('copy', { prevSubject: true }, async (subject) => {
 /**
  * Cut command to dispatch cut event on subject
  *
- * @usage
+ * Usage:
  * cy.get('div').cut().then(data => {})
  */
 Cypress.Commands.add('cut', { prevSubject: true }, async (subject) => {
diff --git a/test/cypress/tests/api/blocks.spec.ts b/test/cypress/tests/api/blocks.spec.ts
index db14d9a2..f17325fd 100644
--- a/test/cypress/tests/api/blocks.spec.ts
+++ b/test/cypress/tests/api/blocks.spec.ts
@@ -1,3 +1,4 @@
+/* eslint-disable @typescript-eslint/no-explicit-any */
 /**
  * There will be described test cases of 'blocks.*' API
  */
diff --git a/test/cypress/tests/block-ids.spec.ts b/test/cypress/tests/block-ids.spec.ts
index 3486f789..4faccaec 100644
--- a/test/cypress/tests/block-ids.spec.ts
+++ b/test/cypress/tests/block-ids.spec.ts
@@ -1,3 +1,4 @@
+/* eslint-disable @typescript-eslint/no-explicit-any */
 import Header from '../../../example/tools/header';
 import { nanoid } from 'nanoid';
 
diff --git a/test/cypress/tests/modules/Tools.spec.ts b/test/cypress/tests/modules/Tools.spec.ts
index e6719825..d3c43d68 100644
--- a/test/cypress/tests/modules/Tools.spec.ts
+++ b/test/cypress/tests/modules/Tools.spec.ts
@@ -1,5 +1,5 @@
 /* tslint:disable:max-classes-per-file */
-/* eslint-disable @typescript-eslint/ban-ts-ignore */
+/* eslint-disable @typescript-eslint/ban-ts-ignore,@typescript-eslint/no-explicit-any,jsdoc/require-jsdoc */
 import Tools from '../../../../src/components/modules/tools';
 import { EditorConfig } from '../../../../types';
 import BlockTool from '../../../../src/components/tools/block';
@@ -86,8 +86,8 @@ describe('Tools module', () => {
               // eslint-disable-next-line @typescript-eslint/no-empty-function
               public static prepare(): void {}
             } as any,
-            inlineToolbar: ['inlineTool2'],
-            tunes: ['blockTune2']
+            inlineToolbar: [ 'inlineTool2' ],
+            tunes: [ 'blockTune2' ],
           },
           withFailedPrepare: class {
             public static prepare(): void {
diff --git a/test/cypress/tests/onchange.spec.ts b/test/cypress/tests/onchange.spec.ts
new file mode 100644
index 00000000..9e8bdaea
--- /dev/null
+++ b/test/cypress/tests/onchange.spec.ts
@@ -0,0 +1,127 @@
+import Header from '../../../example/tools/header';
+
+/**
+ * @todo Add checks that correct block API object is passed to onChange
+ * @todo Add cases for native inputs changes
+ */
+describe('onChange callback', () => {
+  const config = {
+    tools: {
+      header: Header,
+    },
+    onChange: (): void => {
+      console.log('something changed');
+    },
+  };
+
+  beforeEach(() => {
+    if (this && this.editorInstance) {
+      this.editorInstance.destroy();
+    } else {
+      cy.spy(config, 'onChange').as('onChange');
+
+      cy.createEditor(config).as('editorInstance');
+    }
+  });
+
+  it('should fire onChange callback on block insertion', () => {
+    cy.get('[data-cy=editorjs]')
+      .get('div.ce-block')
+      .click()
+      .type('{enter}');
+
+    cy.get('@onChange').should('be.called');
+  });
+
+  it('should fire onChange callback on typing into block', () => {
+    cy.get('[data-cy=editorjs]')
+      .get('div.ce-block')
+      .click()
+      .type('some text');
+
+    cy.get('@onChange').should('be.called');
+  });
+
+  it('should fire onChange callback on block replacement', () => {
+    cy.get('[data-cy=editorjs]')
+      .get('div.ce-block')
+      .click();
+
+    cy.get('[data-cy=editorjs]')
+      .get('div.ce-toolbar__plus')
+      .click();
+
+    cy.get('[data-cy=editorjs]')
+      .get('li.ce-toolbox__button[data-tool=header]')
+      .click();
+
+    cy.get('@onChange').should('be.calledWithMatch', Cypress.sinon.match.any, Cypress.sinon.match({ name: 'header' }));
+  });
+
+  it('should fire onChange callback on tune modifier', () => {
+    cy.get('[data-cy=editorjs]')
+      .get('div.ce-block')
+      .click();
+
+    cy.get('[data-cy=editorjs]')
+      .get('div.ce-toolbar__plus')
+      .click();
+
+    cy.get('[data-cy=editorjs]')
+      .get('li.ce-toolbox__button[data-tool=header]')
+      .click();
+
+    cy.get('[data-cy=editorjs]')
+      .get('div.ce-block')
+      .click();
+
+    cy.get('[data-cy=editorjs]')
+      .get('span.ce-toolbar__settings-btn')
+      .click();
+
+    cy.get('[data-cy=editorjs]')
+      .get('span.cdx-settings-button[data-level=1]')
+      .click();
+
+    cy.get('@onChange').should('be.calledWithMatch', Cypress.sinon.match.any, Cypress.sinon.match({ name: 'header' }));
+  });
+
+  it('should fire onChange callback when block is removed', () => {
+    cy.get('[data-cy=editorjs]')
+      .get('div.ce-block')
+      .click();
+
+    cy.get('[data-cy=editorjs]')
+      .get('span.ce-toolbar__settings-btn')
+      .click();
+
+    cy.get('[data-cy=editorjs]')
+      .get('div.ce-settings__button--delete')
+      .click()
+      .click();
+
+    cy.get('@onChange').should('be.called');
+  });
+
+  it('should fire onChange callback when block is moved', () => {
+    cy.get('[data-cy=editorjs]')
+      .get('div.ce-block')
+      .click()
+      .type('{enter}');
+
+    cy.get('[data-cy=editorjs]')
+      .get('div.ce-block')
+      .last()
+      .click();
+
+    cy.get('[data-cy=editorjs]')
+      .get('span.ce-toolbar__settings-btn')
+      .click();
+
+    cy.get('[data-cy=editorjs]')
+      .get('div.ce-tune-move-up')
+      .click();
+
+    cy.get('@onChange').should('be.called');
+  });
+});
diff --git a/test/cypress/tests/sanitisation.spec.ts b/test/cypress/tests/sanitisation.spec.ts
index 2c40206f..73326f69 100644
--- a/test/cypress/tests/sanitisation.spec.ts
+++ b/test/cypress/tests/sanitisation.spec.ts
@@ -1,3 +1,4 @@
+/* eslint-disable @typescript-eslint/no-explicit-any */
 describe('Output sanitisation', () => {
   beforeEach(() => {
     if (this && this.editorInstance) {
diff --git a/test/cypress/tests/tools/BlockTool.spec.ts b/test/cypress/tests/tools/BlockTool.spec.ts
index e6306a18..114b820e 100644
--- a/test/cypress/tests/tools/BlockTool.spec.ts
+++ b/test/cypress/tests/tools/BlockTool.spec.ts
@@ -1,3 +1,4 @@
+/* eslint-disable @typescript-eslint/no-explicit-any */
 /* tslint:disable:max-classes-per-file */
 import { BlockToolData, ToolSettings } from '../../../../types';
 import { ToolType } from '../../../../src/components/tools/base';
diff --git a/test/cypress/tests/tools/BlockTune.spec.ts b/test/cypress/tests/tools/BlockTune.spec.ts
index f922a254..9704a5dc 100644
--- a/test/cypress/tests/tools/BlockTune.spec.ts
+++ b/test/cypress/tests/tools/BlockTune.spec.ts
@@ -1,3 +1,4 @@
+/* eslint-disable @typescript-eslint/no-explicit-any */
 /* tslint:disable:max-classes-per-file */
 import { ToolSettings } from '../../../../types';
 import { ToolType } from '../../../../src/components/tools/base';
diff --git a/test/cypress/tests/tools/InlineTool.spec.ts b/test/cypress/tests/tools/InlineTool.spec.ts
index 41c56d9b..70bcbc37 100644
--- a/test/cypress/tests/tools/InlineTool.spec.ts
+++ b/test/cypress/tests/tools/InlineTool.spec.ts
@@ -1,3 +1,4 @@
+/* eslint-disable @typescript-eslint/no-explicit-any */
 /* tslint:disable:max-classes-per-file */
 import { ToolSettings } from '../../../../types';
 import { ToolType } from '../../../../src/components/tools/base';
diff --git a/test/cypress/tests/tools/ToolsCollection.spec.ts b/test/cypress/tests/tools/ToolsCollection.spec.ts
index 1cc62dd8..12609324 100644
--- a/test/cypress/tests/tools/ToolsCollection.spec.ts
+++ b/test/cypress/tests/tools/ToolsCollection.spec.ts
@@ -1,3 +1,4 @@
+/* eslint-disable @typescript-eslint/no-explicit-any */
 import ToolsCollection from '../../../../src/components/tools/collection';
 import BlockTool from '../../../../src/components/tools/block';
 import InlineTool from '../../../../src/components/tools/inline';
diff --git a/test/cypress/tests/tools/ToolsFactory.spec.ts b/test/cypress/tests/tools/ToolsFactory.spec.ts
index 84d2ff56..4aff4c41 100644
--- a/test/cypress/tests/tools/ToolsFactory.spec.ts
+++ b/test/cypress/tests/tools/ToolsFactory.spec.ts
@@ -1,3 +1,4 @@
+/* eslint-disable @typescript-eslint/no-explicit-any */
 import LinkInlineTool from '../../../../src/components/inline-tools/inline-tool-link';
 import MoveUpTune from '../../../../src/components/block-tunes/block-tune-move-up';
 import ToolsFactory from '../../../../src/components/tools/factory';
diff --git a/types/configs/editor-config.d.ts b/types/configs/editor-config.d.ts
index dcb213e7..787ed2e5 100644
--- a/types/configs/editor-config.d.ts
+++ b/types/configs/editor-config.d.ts
@@ -1,5 +1,5 @@
 import {ToolConstructable, ToolSettings} from '../tools';
-import {API, LogLevels, OutputData} from '../index';
+import {API, BlockAPI, LogLevels, OutputData} from '../index';
 import {SanitizerConfig} from './sanitizer-config';
 import {I18nConfig} from './i18n-config';
 
@@ -88,8 +88,9 @@ export interface EditorConfig {
   /**
    * Fires when something changed in DOM
    * @param {API} api - editor.js api
+   * @param block - changed block API
    */
-  onChange?(api: API): void;
+  onChange?(api: API, block: BlockAPI): void;
 
   /**
    * Defines default toolbar for all tools.