diff --git a/server.js b/server.js
index c705047..c1ccde8 100644
--- a/server.js
+++ b/server.js
@@ -407,25 +407,36 @@ app.post("/providers/import/:id", authMiddleware, async (req, res) => {
 });
 
 // ==========================================
-// 🗺️ MAPEADOR DE VARIABLES (DISCOVERY) - ¡ESTO ES LO QUE TE FALTA!
+// 🗺️ MAPEADOR (VERSIÓN LIMPIA: SOLO EL ÚLTIMO SERVICIO)
 // ==========================================
 app.get("/discovery/keys/:provider", authMiddleware, async (req, res) => {
     try {
         const { provider } = req.params;
-        const rawServices = await pool.query("SELECT raw_data FROM scraped_services WHERE owner_id=$1 AND provider=$2", [req.user.accountId, provider]);
-        const mappings = await pool.query("SELECT original_key, target_key, is_ignored FROM variable_mappings WHERE owner_id=$1 AND provider=$2", [req.user.accountId, provider]);
+        
+        // CAMBIO: Añadimos 'ORDER BY id DESC LIMIT 1' para coger solo el último
+        const rawServices = await pool.query(
+            "SELECT raw_data FROM scraped_services WHERE owner_id=$1 AND provider=$2 ORDER BY id DESC LIMIT 1",
+            [req.user.accountId, provider]
+        );
+
+        const mappings = await pool.query(
+            "SELECT original_key, target_key, is_ignored FROM variable_mappings WHERE owner_id=$1 AND provider=$2",
+            [req.user.accountId, provider]
+        );
         const mapDict = {};
         mappings.rows.forEach(m => mapDict[m.original_key] = m);
 
         const discoverySet = new Set();
         const samples = {};
 
+        // Como solo hay 1 fila (la última), el bucle es corto y limpio
         rawServices.rows.forEach(row => {
             const data = row.raw_data;
             if (data && typeof data === 'object') {
                 Object.keys(data).forEach(k => {
                     discoverySet.add(k);
-                    if (!samples[k] && data[k]) samples[k] = data[k];
+                    // Guardamos el valor para mostrarlo de ejemplo
+                    if (!samples[k]) samples[k] = data[k];
                 });
             }
         });
@@ -437,6 +448,18 @@ app.get("/discovery/keys/:provider", authMiddleware, async (req, res) => {
             ignored: mapDict[key]?.is_ignored || false
         })).sort((a, b) => a.original.localeCompare(b.original));
 
+        res.json({ ok: true, keys: result });
+
+    } catch (e) { res.status(500).json({ ok: false, error: e.message }); }
+});
+
+        const result = Array.from(discoverySet).map(key => ({
+            original: key,
+            sample: samples[key] || "(Vacío)",
+            mappedTo: mapDict[key]?.target_key || "",
+            ignored: mapDict[key]?.is_ignored || false
+        })).sort((a, b) => a.original.localeCompare(b.original));
+
         res.json({ ok: true, keys: result });
     } catch (e) { res.status(500).json({ ok: false, error: e.message }); }
 });