diff --git a/tests/System/integration/api/com_content/Articles.cy.js b/tests/System/integration/api/com_content/Articles.cy.js
index 709c8eb15a7a1..a702ac179081f 100644
--- a/tests/System/integration/api/com_content/Articles.cy.js
+++ b/tests/System/integration/api/com_content/Articles.cy.js
@@ -1,5 +1,8 @@
 describe('Test that content API endpoint', () => {
-  afterEach(() => cy.task('queryDB', 'DELETE FROM #__content'));
+  afterEach(() => {
+    cy.task('queryDB', 'DELETE FROM #__content');
+    cy.db_deleteCategory({ title: 'automated test content category' });
+  });
 
   it('can deliver a list of articles', () => {
     cy.db_createArticle({ title: 'automated test article' })
@@ -138,4 +141,79 @@ describe('Test that content API endpoint', () => {
         .its('alias')
         .should('equal', 'test-article-2'));
   });
+
+  it('should handle missing required fields gracefully with a clean JSON error schema', () => {
+    cy.api_getBearerToken().then((token) => {
+      cy.request({
+        method: 'POST',
+        url: '/api/index.php/v1/content/articles',
+        headers: {
+          Authorization: `Bearer ${token}`,
+        },
+        body: {
+          // Flat payload missing mandatory required fields like title and category
+          title: 'Malformed Test Article',
+        },
+        failOnStatusCode: false,
+      })
+        .then((response) => {
+          // It should fail gracefully, not crash with a 500 Unhandled PHP Error
+          expect(response.status).to.be.equal(400);
+
+          // Validate error schema
+          expect(response.body).to.have.property('errors');
+          expect(response.body.errors).to.be.an('array');
+          expect(response.body.errors[0]).to.have.property('title');
+          expect(response.body.errors[0].title).to.include('Field required: Category');
+        });
+    });
+  });
+
+  it('can deliver a list of articles conforming to page limit and offset pagination flags', () => {
+    // Create 3 distinct articles to verify true middle-offset navigation
+    cy.db_createArticle({ title: 'automated test article A' })
+      .then(() => cy.db_createArticle({ title: 'automated test article B' }))
+      .then(() => cy.db_createArticle({ title: 'automated test article C' }))
+      .then(() => {
+        // Verify Limit: Request only 2 items out of the 3 available
+        return cy.api_get('/content/articles?page[limit]=2&page[offset]=0');
+      })
+      .then((response) => {
+        cy.wrap(response).its('body').its('data').should('have.length', 2);
+      })
+      .then(() => {
+        // Verify Offset: Limit to 1 item, but skip the first one (offset=1)
+        return cy.api_get('/content/articles?page[limit]=1&page[offset]=1');
+      })
+      .then((response) => {
+        // It must only return 1 item
+        cy.wrap(response).its('body').its('data').should('have.length', 1);
+
+        // Assert that it skipped 'C' (newest) and grabbed 'B' (middle)
+        cy.wrap(response).its('body').its('data').its('0').its('attributes').its('title')
+          .should('include', 'automated test article B');
+      });
+  });
+
+  it('should successfully fetch articles and verify their category relationships', () => {
+    let categoryId;
+
+    cy.api_post('/content/categories', { title: 'automated test content category', parent_id: 1, extension: 'com_content' })
+      .then((response) => {
+        categoryId = response.body.data.id;
+        return cy.db_createArticle({ title: 'automated test article', catid: Number(categoryId) });
+      })
+      .then(() => {
+        return cy.api_get('/content/articles');
+      })
+      .then((response) => {
+        cy.wrap(response).its('body').its('data').should('be.an', 'array').and('have.length.at.least', 1);
+        cy.wrap(response).its('body').its('data').its('0').its('attributes').its('title')
+          .should('include', 'automated test article');
+
+        // Validate the relational linkage matches the created category ID
+        cy.wrap(response).its('body').its('data').its('0').its('relationships').its('category').its('data').its('id')
+          .should('equal', categoryId);
+      });
+  });
 });