diff --git a/src/exporters/stat.ink.ts b/src/exporters/stat.ink.ts
index 4c2f316..9a0c1c4 100644
--- a/src/exporters/stat.ink.ts
+++ b/src/exporters/stat.ink.ts
@@ -23,6 +23,7 @@ import {
   StatInkPostBody,
   StatInkPostResponse,
   StatInkStage,
+  StatInkUuidList,
   StatInkWeapon,
   VsHistoryDetail,
   VsInfo,
@@ -66,12 +67,23 @@ class StatInkAPI {
 
   async uuidList(type: Game["type"]): Promise<string[]> {
     const fetch = this.env.newFetcher();
-    return await (await fetch.get({
+    const response = await fetch.get({
       url: type === "VsInfo"
         ? `${this.statInk}/api/v3/s3s/uuid-list`
         : `${this.statInk}/api/v3/salmon/uuid-list`,
       headers: this.requestHeaders(),
-    })).json();
+    });
+    const uuidResult: StatInkUuidList = await response.json();
+
+    if (!Array.isArray(uuidResult)) {
+      throw new APIError({
+        response,
+        json: uuidResult,
+        message: uuidResult.message,
+      });
+    }
+
+    return uuidResult;
   }
 
   async postBattle(body: StatInkPostBody) {
diff --git a/src/types.ts b/src/types.ts
index 4c6393c..ba682c6 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -552,6 +552,13 @@ export enum BattleListType {
   Coop,
 }
 
+export type StatInkUuidList = {
+  status: number;
+  code: number;
+  name: string;
+  message: string;
+} | string[];
+
 export type StatInkAbility = {
   key: string;
   name: Record<string, string>;