diff --git a/src/modules/cards/tests/domain/value-objects/URL.test.ts b/src/modules/cards/tests/domain/value-objects/URL.test.ts
new file mode 100644
index 00000000..3f0d926d
--- /dev/null
+++ b/src/modules/cards/tests/domain/value-objects/URL.test.ts
@@ -0,0 +1,367 @@
+import { URL, InvalidURLError } from '../../../domain/value-objects/URL';
+
+describe('URL Value Object', () => {
+  describe('create', () => {
+    describe('valid URLs', () => {
+      it('should create URL with valid http URL', () => {
+        const result = URL.create('http://example.com');
+
+        expect(result.isOk()).toBe(true);
+        expect(result.unwrap().value).toBe('http://example.com/');
+      });
+
+      it('should create URL with valid https URL', () => {
+        const result = URL.create('https://example.com');
+
+        expect(result.isOk()).toBe(true);
+        expect(result.unwrap().value).toBe('https://example.com/');
+      });
+
+      it('should create URL with subdomain', () => {
+        const result = URL.create('https://www.example.com');
+
+        expect(result.isOk()).toBe(true);
+        expect(result.unwrap().value).toBe('https://www.example.com/');
+      });
+
+      it('should create URL with port', () => {
+        const result = URL.create('https://example.com:8080');
+
+        expect(result.isOk()).toBe(true);
+        expect(result.unwrap().value).toBe('https://example.com:8080/');
+      });
+    });
+
+    describe('trailing slash normalization', () => {
+      describe('should add trailing slash to bare root domains', () => {
+        it('should add trailing slash to http://example.com', () => {
+          const result = URL.create('http://example.com');
+
+          expect(result.isOk()).toBe(true);
+          expect(result.unwrap().value).toBe('http://example.com/');
+        });
+
+        it('should add trailing slash to https://example.com', () => {
+          const result = URL.create('https://example.com');
+
+          expect(result.isOk()).toBe(true);
+          expect(result.unwrap().value).toBe('https://example.com/');
+        });
+
+        it('should add trailing slash to https://www.example.com', () => {
+          const result = URL.create('https://www.example.com');
+
+          expect(result.isOk()).toBe(true);
+          expect(result.unwrap().value).toBe('https://www.example.com/');
+        });
+
+        it('should add trailing slash to https://example.com:8080', () => {
+          const result = URL.create('https://example.com:8080');
+
+          expect(result.isOk()).toBe(true);
+          expect(result.unwrap().value).toBe('https://example.com:8080/');
+        });
+
+        it('should add trailing slash to https://sub.domain.example.com', () => {
+          const result = URL.create('https://sub.domain.example.com');
+
+          expect(result.isOk()).toBe(true);
+          expect(result.unwrap().value).toBe('https://sub.domain.example.com/');
+        });
+      });
+
+      describe('should NOT add trailing slash when already present', () => {
+        it('should not add trailing slash to https://example.com/', () => {
+          const result = URL.create('https://example.com/');
+
+          expect(result.isOk()).toBe(true);
+          expect(result.unwrap().value).toBe('https://example.com/');
+        });
+
+        it('should not add trailing slash to https://www.example.com/', () => {
+          const result = URL.create('https://www.example.com/');
+
+          expect(result.isOk()).toBe(true);
+          expect(result.unwrap().value).toBe('https://www.example.com/');
+        });
+
+        it('should not add trailing slash to https://example.com:8080/', () => {
+          const result = URL.create('https://example.com:8080/');
+
+          expect(result.isOk()).toBe(true);
+          expect(result.unwrap().value).toBe('https://example.com:8080/');
+        });
+      });
+
+      describe('should NOT add trailing slash to URLs with paths', () => {
+        it('should not add trailing slash to https://example.com/path', () => {
+          const result = URL.create('https://example.com/path');
+
+          expect(result.isOk()).toBe(true);
+          expect(result.unwrap().value).toBe('https://example.com/path');
+        });
+
+        it('should not add trailing slash to https://example.com/path/subpath', () => {
+          const result = URL.create('https://example.com/path/subpath');
+
+          expect(result.isOk()).toBe(true);
+          expect(result.unwrap().value).toBe(
+            'https://example.com/path/subpath',
+          );
+        });
+
+        it('should not add trailing slash to https://example.com/path/', () => {
+          const result = URL.create('https://example.com/path/');
+
+          expect(result.isOk()).toBe(true);
+          expect(result.unwrap().value).toBe('https://example.com/path/');
+        });
+
+        it('should not add trailing slash to https://example.com/path.html', () => {
+          const result = URL.create('https://example.com/path.html');
+
+          expect(result.isOk()).toBe(true);
+          expect(result.unwrap().value).toBe('https://example.com/path.html');
+        });
+
+        it('should not add trailing slash to https://example.com/api/v1/users', () => {
+          const result = URL.create('https://example.com/api/v1/users');
+
+          expect(result.isOk()).toBe(true);
+          expect(result.unwrap().value).toBe(
+            'https://example.com/api/v1/users',
+          );
+        });
+      });
+
+      describe('should NOT add trailing slash to URLs with query parameters', () => {
+        it('should not add trailing slash to https://example.com?param=value', () => {
+          const result = URL.create('https://example.com?param=value');
+
+          expect(result.isOk()).toBe(true);
+          expect(result.unwrap().value).toBe('https://example.com?param=value');
+        });
+
+        it('should not add trailing slash to https://example.com?param1=value1&param2=value2', () => {
+          const result = URL.create(
+            'https://example.com?param1=value1&param2=value2',
+          );
+
+          expect(result.isOk()).toBe(true);
+          expect(result.unwrap().value).toBe(
+            'https://example.com?param1=value1&param2=value2',
+          );
+        });
+
+        it('should not add trailing slash to https://example.com/?param=value', () => {
+          const result = URL.create('https://example.com/?param=value');
+
+          expect(result.isOk()).toBe(true);
+          expect(result.unwrap().value).toBe(
+            'https://example.com/?param=value',
+          );
+        });
+
+        it('should not add trailing slash to https://example.com/path?param=value', () => {
+          const result = URL.create('https://example.com/path?param=value');
+
+          expect(result.isOk()).toBe(true);
+          expect(result.unwrap().value).toBe(
+            'https://example.com/path?param=value',
+          );
+        });
+      });
+
+      describe('should NOT add trailing slash to URLs with fragments', () => {
+        it('should not add trailing slash to https://example.com#section', () => {
+          const result = URL.create('https://example.com#section');
+
+          expect(result.isOk()).toBe(true);
+          expect(result.unwrap().value).toBe('https://example.com#section');
+        });
+
+        it('should not add trailing slash to https://example.com/#section', () => {
+          const result = URL.create('https://example.com/#section');
+
+          expect(result.isOk()).toBe(true);
+          expect(result.unwrap().value).toBe('https://example.com/#section');
+        });
+
+        it('should not add trailing slash to https://example.com/path#section', () => {
+          const result = URL.create('https://example.com/path#section');
+
+          expect(result.isOk()).toBe(true);
+          expect(result.unwrap().value).toBe(
+            'https://example.com/path#section',
+          );
+        });
+
+        it('should not add trailing slash to https://example.com?param=value#section', () => {
+          const result = URL.create('https://example.com?param=value#section');
+
+          expect(result.isOk()).toBe(true);
+          expect(result.unwrap().value).toBe(
+            'https://example.com?param=value#section',
+          );
+        });
+      });
+
+      describe('should NOT add trailing slash to URLs with query parameters AND fragments', () => {
+        it('should not add trailing slash to https://example.com?param=value#section', () => {
+          const result = URL.create('https://example.com?param=value#section');
+
+          expect(result.isOk()).toBe(true);
+          expect(result.unwrap().value).toBe(
+            'https://example.com?param=value#section',
+          );
+        });
+
+        it('should not add trailing slash to https://example.com/path?param=value#section', () => {
+          const result = URL.create(
+            'https://example.com/path?param=value#section',
+          );
+
+          expect(result.isOk()).toBe(true);
+          expect(result.unwrap().value).toBe(
+            'https://example.com/path?param=value#section',
+          );
+        });
+      });
+    });
+
+    describe('edge cases', () => {
+      it('should handle URLs with IP addresses', () => {
+        const result = URL.create('http://192.168.1.1');
+
+        expect(result.isOk()).toBe(true);
+        expect(result.unwrap().value).toBe('http://192.168.1.1/');
+      });
+
+      it('should handle URLs with IP addresses and ports', () => {
+        const result = URL.create('http://192.168.1.1:8080');
+
+        expect(result.isOk()).toBe(true);
+        expect(result.unwrap().value).toBe('http://192.168.1.1:8080/');
+      });
+
+      it('should handle localhost', () => {
+        const result = URL.create('http://localhost');
+
+        expect(result.isOk()).toBe(true);
+        expect(result.unwrap().value).toBe('http://localhost/');
+      });
+
+      it('should handle localhost with port', () => {
+        const result = URL.create('http://localhost:3000');
+
+        expect(result.isOk()).toBe(true);
+        expect(result.unwrap().value).toBe('http://localhost:3000/');
+      });
+
+      it('should trim whitespace before processing', () => {
+        const result = URL.create('  https://example.com  ');
+
+        expect(result.isOk()).toBe(true);
+        expect(result.unwrap().value).toBe('https://example.com/');
+      });
+
+      it('should handle URLs with authentication', () => {
+        const result = URL.create('https://user:pass@example.com');
+
+        expect(result.isOk()).toBe(true);
+        expect(result.unwrap().value).toBe('https://user:pass@example.com/');
+      });
+      it('should handle URLs with multiple slashes', () => {
+        const result = URL.create('https://example.com//');
+
+        expect(result.isOk()).toBe(true);
+        expect(result.unwrap().value).toBe('https://example.com//');
+      });
+    });
+
+    describe('invalid URLs', () => {
+      it('should fail for empty string', () => {
+        const result = URL.create('');
+
+        if (!result.isErr()) {
+          throw new Error('Expected result to be an error');
+        }
+        expect(result.isErr()).toBe(true);
+        expect(result.error).toBeInstanceOf(InvalidURLError);
+        expect(result.error.message).toBe('URL cannot be empty');
+      });
+
+      it('should fail for whitespace only', () => {
+        const result = URL.create('   ');
+
+        if (!result.isErr()) {
+          throw new Error('Expected result to be an error');
+        }
+        expect(result.isErr()).toBe(true);
+        expect(result.error).toBeInstanceOf(InvalidURLError);
+        expect(result.error.message).toBe('URL cannot be empty');
+      });
+
+      it('should fail for invalid URL format', () => {
+        const result = URL.create('not-a-url');
+
+        if (!result.isErr()) {
+          throw new Error('Expected result to be an error');
+        }
+        expect(result.isErr()).toBe(true);
+        expect(result.error).toBeInstanceOf(InvalidURLError);
+        expect(result.error.message).toBe('Invalid URL format');
+      });
+
+      it('should fail for URL without protocol', () => {
+        const result = URL.create('example.com');
+
+        if (!result.isErr()) {
+          throw new Error('Expected result to be an error');
+        }
+        expect(result.isErr()).toBe(true);
+        expect(result.error).toBeInstanceOf(InvalidURLError);
+        expect(result.error.message).toBe('Invalid URL format');
+      });
+
+      it('should fail for malformed URL', () => {
+        const result = URL.create('https://');
+
+        if (!result.isErr()) {
+          throw new Error('Expected result to be an error');
+        }
+        expect(result.isErr()).toBe(true);
+        expect(result.error).toBeInstanceOf(InvalidURLError);
+        expect(result.error.message).toBe('Invalid URL format');
+      });
+    });
+  });
+
+  describe('toString', () => {
+    it('should return the URL value as string', () => {
+      const url = URL.create('https://example.com/path').unwrap();
+
+      expect(url.toString()).toBe('https://example.com/path');
+    });
+
+    it('should return normalized URL with trailing slash for bare domains', () => {
+      const url = URL.create('https://example.com').unwrap();
+
+      expect(url.toString()).toBe('https://example.com/');
+    });
+  });
+
+  describe('value getter', () => {
+    it('should return the URL value', () => {
+      const url = URL.create('https://example.com/path').unwrap();
+
+      expect(url.value).toBe('https://example.com/path');
+    });
+
+    it('should return normalized URL with trailing slash for bare domains', () => {
+      const url = URL.create('https://example.com').unwrap();
+
+      expect(url.value).toBe('https://example.com/');
+    });
+  });
+});