diff --git a/packages/core/__tests__/diff/directive-usage.test.ts b/packages/core/__tests__/diff/directive-usage.test.ts
index 6ce1400400..9bdc005817 100644
--- a/packages/core/__tests__/diff/directive-usage.test.ts
+++ b/packages/core/__tests__/diff/directive-usage.test.ts
@@ -405,4 +405,51 @@ describe('directive-usage', () => {
       expect(change.message).toEqual("Directive 'external' was removed from Scalar type 'Foo'");
     });
   });
+
+  describe('object-level directives', () => {
+    test('added directive', async () => {
+      const a = buildSchema(/* GraphQL */ `
+        directive @external on OBJECT
+        type Foo {
+          a: String
+        }
+      `);
+      const b = buildSchema(/* GraphQL */ `
+        directive @external on OBJECT
+        type Foo @external {
+          a: String
+        }
+      `);
+
+      const changes = await diff(a, b);
+      console.log('changes', changes);
+      const change = findFirstChangeByPath(changes, 'Foo.external');
+
+      expect(change.criticality.level).toEqual(CriticalityLevel.Dangerous);
+      expect(change.type).toEqual('DIRECTIVE_USAGE_OBJECT_ADDED');
+      expect(change.message).toEqual("Directive 'external' was added to Object type 'Foo'");
+    });
+    test('removed directive', async () => {
+      const a = buildSchema(/* GraphQL */ `
+        directive @external on OBJECT
+        type Foo @external {
+          a: String
+        }
+      `);
+      const b = buildSchema(/* GraphQL */ `
+        directive @external on OBJECT
+        type Foo {
+          a: String
+        }
+      `);
+
+      const changes = await diff(a, b);
+      console.log('changes', changes);
+      const change = findFirstChangeByPath(changes, 'Foo.external');
+
+      expect(change.criticality.level).toEqual(CriticalityLevel.Breaking);
+      expect(change.type).toEqual('DIRECTIVE_USAGE_OBJECT_REMOVED');
+      expect(change.message).toEqual("Directive 'external' was removed from Object type 'Foo'");
+    });
+  });
 });
diff --git a/packages/core/src/diff/changes/change.ts b/packages/core/src/diff/changes/change.ts
index 02488f30d2..e8306ab3e7 100644
--- a/packages/core/src/diff/changes/change.ts
+++ b/packages/core/src/diff/changes/change.ts
@@ -77,6 +77,8 @@ export enum ChangeType {
   DirectiveUsageFieldRemoved = 'DIRECTIVE_USAGE_FIELD_REMOVED',
   DirectiveUsageScalarAdded = 'DIRECTIVE_USAGE_SCALAR_ADDED',
   DirectiveUsageScalarRemoved = 'DIRECTIVE_USAGE_SCALAR_REMOVED',
+  DirectiveUsageObjectAdded = 'DIRECTIVE_USAGE_OBJECT_ADDED',
+  DirectiveUsageObjectRemoved = 'DIRECTIVE_USAGE_OBJECT_REMOVED',
 }
 
 export enum CriticalityLevel {
@@ -701,6 +703,22 @@ export type DirectiveUsageScalarRemovedChange = {
   };
 };
 
+export type DirectiveUsageObjectAddedChange = {
+  type: ChangeType.DirectiveUsageObjectAdded;
+  meta: {
+    objectName: string;
+    addedDirectiveName: string;
+  };
+};
+
+export type DirectiveUsageObjectRemovedChange = {
+  type: ChangeType.DirectiveUsageObjectRemoved;
+  meta: {
+    objectName: string;
+    removedDirectiveName: string;
+  };
+};
+
 type Changes = {
   [ChangeType.TypeAdded]: TypeAddedChange;
   [ChangeType.TypeRemoved]: TypeRemovedChange;
@@ -788,6 +806,8 @@ type Changes = {
   [ChangeType.DirectiveUsageFieldRemoved]: DirectiveUsageFieldRemovedChange;
   [ChangeType.DirectiveUsageScalarAdded]: DirectiveUsageScalarAddedChange;
   [ChangeType.DirectiveUsageScalarRemoved]: DirectiveUsageScalarRemovedChange;
+  [ChangeType.DirectiveUsageObjectAdded]: DirectiveUsageObjectAddedChange;
+  [ChangeType.DirectiveUsageObjectRemoved]: DirectiveUsageObjectRemovedChange;
 };
 
 export type SerializableChange = Changes[keyof Changes];
diff --git a/packages/core/src/diff/changes/object.ts b/packages/core/src/diff/changes/object.ts
index ba32649bdf..8092e04f28 100644
--- a/packages/core/src/diff/changes/object.ts
+++ b/packages/core/src/diff/changes/object.ts
@@ -1,8 +1,10 @@
-import { GraphQLInterfaceType, GraphQLObjectType } from 'graphql';
+import { ConstDirectiveNode, GraphQLInterfaceType, GraphQLObjectType } from 'graphql';
 import {
   Change,
   ChangeType,
   CriticalityLevel,
+  DirectiveUsageObjectAddedChange,
+  DirectiveUsageObjectRemovedChange,
   ObjectTypeInterfaceAddedChange,
   ObjectTypeInterfaceRemovedChange,
 } from './change.js';
@@ -68,3 +70,65 @@ export function objectTypeInterfaceRemoved(
     },
   });
 }
+
+function buildObjectDiractiveUsageRemovedMessage(args: DirectiveUsageObjectRemovedChange['meta']) {
+  return `Directive '${args.removedDirectiveName}' was removed from Object type '${args.objectName}'`;
+}
+
+export function objectDiractiveUsageRemovedFromMeta(args: DirectiveUsageObjectRemovedChange) {
+  return {
+    type: ChangeType.DirectiveUsageObjectRemoved,
+    criticality: {
+      level: CriticalityLevel.Breaking,
+      reason:
+        'Removing a directive from an object type can cause existing queries that use this directive to error.',
+    },
+    message: buildObjectDiractiveUsageRemovedMessage(args.meta),
+    meta: args.meta,
+    path: [args.meta.objectName, args.meta.removedDirectiveName].join('.'),
+  } as const;
+}
+
+export function objectDiractiveUsageRemoved(
+  oldObject: GraphQLObjectType,
+  directive: ConstDirectiveNode,
+): Change<ChangeType.DirectiveUsageObjectRemoved> {
+  return objectDiractiveUsageRemovedFromMeta({
+    type: ChangeType.DirectiveUsageObjectRemoved,
+    meta: {
+      objectName: oldObject.name,
+      removedDirectiveName: directive.name.value,
+    },
+  });
+}
+
+function buildObjectDiractiveUsageAddedMessage(args: DirectiveUsageObjectAddedChange['meta']) {
+  return `Directive '${args.addedDirectiveName}' was added to Object type '${args.objectName}'`;
+}
+
+export function objectDiractiveUsageAddedFromMeta(args: DirectiveUsageObjectAddedChange) {
+  return {
+    type: ChangeType.DirectiveUsageObjectAdded,
+    criticality: {
+      level: CriticalityLevel.Dangerous,
+      reason:
+        'Adding a directive to an object type can cause existing queries that use this directive to error.',
+    },
+    message: buildObjectDiractiveUsageAddedMessage(args.meta),
+    meta: args.meta,
+    path: [args.meta.objectName, args.meta.addedDirectiveName].join('.'),
+  } as const;
+}
+
+export function objectDiractiveUsageAdded(
+  newObject: GraphQLObjectType,
+  directive: ConstDirectiveNode,
+): Change<ChangeType.DirectiveUsageObjectAdded> {
+  return objectDiractiveUsageAddedFromMeta({
+    type: ChangeType.DirectiveUsageObjectAdded,
+    meta: {
+      objectName: newObject.name,
+      addedDirectiveName: directive.name.value,
+    },
+  });
+}
diff --git a/packages/core/src/diff/object.ts b/packages/core/src/diff/object.ts
index 6cae1214e7..bcf4accd1c 100644
--- a/packages/core/src/diff/object.ts
+++ b/packages/core/src/diff/object.ts
@@ -1,7 +1,12 @@
 import { GraphQLObjectType } from 'graphql';
 import { compareLists } from '../utils/compare.js';
 import { fieldAdded, fieldRemoved } from './changes/field.js';
-import { objectTypeInterfaceAdded, objectTypeInterfaceRemoved } from './changes/object.js';
+import {
+  objectDiractiveUsageAdded,
+  objectDiractiveUsageRemoved,
+  objectTypeInterfaceAdded,
+  objectTypeInterfaceRemoved,
+} from './changes/object.js';
 import { changesInField } from './field.js';
 import { AddChange } from './schema.js';
 
@@ -36,4 +41,13 @@ export function changesInObject(
       changesInField(oldType, f.oldVersion, f.newVersion, addChange);
     },
   });
+
+  compareLists(oldType.astNode?.directives || [], newType.astNode?.directives || [], {
+    onAdded(diractive) {
+      addChange(objectDiractiveUsageAdded(newType, diractive));
+    },
+    onRemoved(diractive) {
+      addChange(objectDiractiveUsageRemoved(newType, diractive));
+    },
+  });
 }