diff --git a/.github/workflows/oasdiff.yml b/.github/workflows/oasdiff.yml
deleted file mode 100644
index ed97d9f..0000000
--- a/.github/workflows/oasdiff.yml
+++ /dev/null
@@ -1,21 +0,0 @@
-name: oasdiff
-
-on:
-  pull_request:
-
-permissions:
-  pull-requests: write
-
-jobs:
-  oasdiff:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v6
-
-      - run: git fetch --depth=1 origin ${{ github.base_ref }}
-
-      - uses: oasdiff/oasdiff-action/pr-comment@v0.0.31
-        with:
-          base: 'origin/${{ github.base_ref }}:simple.yaml'
-          revision: 'HEAD:simple.yaml'
-          oasdiff-token: ${{ secrets.OASDIFF_TOKEN }}
diff --git a/.github/workflows/pr-comment.yml b/.github/workflows/pr-comment.yml
index 2e5b105..0f397e6 100644
--- a/.github/workflows/pr-comment.yml
+++ b/.github/workflows/pr-comment.yml
@@ -1,23 +1,20 @@
-name: oasdiff PR comment
+name: API Breaking Change Check
 
 on:
   pull_request:
-
-permissions:
-  contents: read
-  pull-requests: write
-  statuses: write
+    paths:
+      - 'simple.yaml'
 
 jobs:
-  pr-comment:
+  breaking-changes:
     runs-on: ubuntu-latest
     steps:
-    - name: Check out code
-      uses: actions/checkout@v4
+      - uses: actions/checkout@v6
+
+      - run: git fetch --depth=1 origin ${{ github.base_ref }}
 
-    - name: Post oasdiff PR comment
-      uses: oasdiff/oasdiff-action/pr-comment@v0.0.34
-      with:
-        base: https://raw.githubusercontent.com/${{ github.repository }}/${{ github.base_ref }}/simple.yaml
-        revision: simple.yaml
-        oasdiff-token: 0634345d-02fb-43df-b56a-68fc22253621
+      - uses: oasdiff/oasdiff-action/breaking@main
+        with:
+          base: 'origin/${{ github.base_ref }}:simple.yaml'
+          revision: 'HEAD:simple.yaml'
+          fail-on: ERR
diff --git a/simple.yaml b/simple.yaml
index b635d93..9c993b7 100644
--- a/simple.yaml
+++ b/simple.yaml
@@ -9,9 +9,12 @@ components:
     groupId:
       in: query
       name: groupId
-      required: false
+      required: true
       schema:
-        type: string
+        type: object
+        properties:
+          id:
+            type: number
   schemas:
     GroupView:
       type: object
@@ -23,16 +26,35 @@ components:
               type: string
               format: date-time
               readOnly: true
-              pattern: "^[a-z]+$"
+              pattern: "^[A-Z]+$"
             id:
               type: string
               readOnly: true
             name:
               type: string
+            email:
+              type: string
           required:
             - name
+            - email1
 paths:
   /api/v1.0/groups:
+    get:
+      tags:
+       - Group
+      operationId: getGroups
+      parameters:
+        - $ref: '#/components/parameters/groupId'
+      responses:
+        "200":
+          content:
+            application/json:
+              schema:
+                type: array
+                items:
+                  $ref: '#/components/schemas/GroupView'
+          description: SUCCESS
+      summary: Get Projects
     post:
       tags:
        - Group