diff --git a/src/components/chat/GlobalChatbox.tsx b/src/components/chat/GlobalChatbox.tsx
index 9d1ee1b..c7e8d1f 100644
--- a/src/components/chat/GlobalChatbox.tsx
+++ b/src/components/chat/GlobalChatbox.tsx
@@ -789,12 +789,27 @@ export const GlobalChatbox: React.FC<Props> = ({ open, onClose }) => {
         }
 
         // Other frontend tools → dispatch to chatToolStore immediately
+        const normalizeIds = (): string[] => {
+          const rawIds = params.ids;
+          if (Array.isArray(rawIds)) {
+            return rawIds
+              .map((id) => String(id).trim())
+              .filter(Boolean);
+          }
+          if (typeof rawIds === "string") {
+            return rawIds
+              .split(",")
+              .map((id) => id.trim())
+              .filter(Boolean);
+          }
+          return [];
+        };
         const buildLocateFeaturesAction = (
           layer: string,
           geometryKind: "point" | "line",
         ): ChatToolAction => ({
           type: "locate_features" as const,
-          ids: (params.ids as string[]) ?? [],
+          ids: normalizeIds(),
           layer,
           geometryKind,
         });
diff --git a/src/utils/mapQueryService.ts b/src/utils/mapQueryService.ts
index 71db93b..7822b5e 100644
--- a/src/utils/mapQueryService.ts
+++ b/src/utils/mapQueryService.ts
@@ -224,11 +224,16 @@ const queryFeaturesByIds = async (
   ids: string[],
   layer?: string
 ): Promise<Feature[]> => {
-  if (!ids.length) {
+  const normalizedIds = ids
+    .map((id) => String(id).trim())
+    .filter((id) => id.length > 0);
+
+  if (!normalizedIds.length) {
     return [];
   }
 
-  const orFilter = ids.map((id) => `id='${id}'`).join(" OR ");
+  const escapedIds = normalizedIds.map((id) => id.replace(/'/g, "''"));
+  const orFilter = escapedIds.map((id) => `id='${id}'`).join(" OR ");
 
   try {
     if (!layer) {