diff --git a/syntaxcheck.js b/syntaxcheck.js
new file mode 100644
index 0000000..672ac6a
--- /dev/null
+++ b/syntaxcheck.js
@@ -0,0 +1,39 @@
+'use strict';
+// Geçici sözdizimi denetçisi — tüm JS dosyalarını node --check ile test eder.
+const { execFileSync } = require('child_process');
+const path = require('path');
+const fs = require('fs');
+
+const root = __dirname;
+const files = [
+  'server.js',
+  'routes/products.js',
+  'routes/stock.js',
+  'routes/categories.js',
+  'routes/reports.js',
+  'models/productModel.js',
+  'models/stockModel.js',
+  'models/categoryModel.js',
+  'services/lowStockService.js',
+  'services/reportService.js',
+  'seed.js'
+];
+
+let allOK = true;
+for (const rel of files) {
+  const abs = path.join(root, rel);
+  if (!fs.existsSync(abs)) {
+    console.log('EXIK DOSYA:', rel);
+    allOK = false;
+    continue;
+  }
+  try {
+    execFileSync(process.execPath, ['--check', abs], { stdio: 'pipe' });
+    console.log('OK:', rel);
+  } catch (e) {
+    allOK = false;
+    console.log('FAIL:', rel, '|', String(e.stderr || e.message).trim());
+  }
+}
+console.log(allOK ? '=== TÜM SINTAKS OK ===' : '=== SINTAKS HATALARI VAR ===');
+process.exit(allOK ? 0 : 1);