diff --git a/src/langbot/pkg/plugin/connector.py b/src/langbot/pkg/plugin/connector.py
index 888eff14..5a59f1ed 100644
--- a/src/langbot/pkg/plugin/connector.py
+++ b/src/langbot/pkg/plugin/connector.py
@@ -103,6 +103,16 @@ class PluginRuntimeConnector(ManagedRuntimeConnector):
 
             self.handler_task = asyncio.create_task(self.handler.run())
             _ = await self.handler.ping()
+            # Push the configured marketplace (Space) URL to the runtime so it
+            # downloads plugins from the same Space LangBot is bound to, rather
+            # than relying on the runtime's own env/default.
+            space_url = self.ap.instance_config.data.get('space', {}).get('url', '').rstrip('/')
+            if space_url:
+                try:
+                    await self.handler.set_runtime_config(cloud_service_url=space_url)
+                    self.ap.logger.info(f'Pushed marketplace URL to plugin runtime: {space_url}')
+                except Exception as e:
+                    self.ap.logger.warning(f'Failed to push runtime config: {e}')
             self.ap.logger.info('Connected to plugin runtime.')
             await self.handler_task
 
diff --git a/src/langbot/pkg/plugin/handler.py b/src/langbot/pkg/plugin/handler.py
index 60922003..f5a8511e 100644
--- a/src/langbot/pkg/plugin/handler.py
+++ b/src/langbot/pkg/plugin/handler.py
@@ -779,6 +779,16 @@ class RuntimeConnectionHandler(handler.Handler):
             timeout=10,
         )
 
+    async def set_runtime_config(self, cloud_service_url: str) -> dict[str, Any]:
+        """Push runtime configuration (e.g. marketplace URL) to the runtime."""
+        return await self.call_action(
+            LangBotToRuntimeAction.SET_RUNTIME_CONFIG,
+            {
+                'cloud_service_url': cloud_service_url,
+            },
+            timeout=10,
+        )
+
     async def install_plugin(
         self, install_source: str, install_info: dict[str, Any]
     ) -> typing.AsyncGenerator[dict[str, Any], None]:
diff --git a/web/src/app/home/plugins/components/plugin-market/PluginMarketComponent.tsx b/web/src/app/home/plugins/components/plugin-market/PluginMarketComponent.tsx
index d14d2e0a..1f3efeea 100644
--- a/web/src/app/home/plugins/components/plugin-market/PluginMarketComponent.tsx
+++ b/web/src/app/home/plugins/components/plugin-market/PluginMarketComponent.tsx
@@ -29,7 +29,10 @@ import PluginMarketCardComponent from './plugin-market-card/PluginMarketCardComp
 import { PluginMarketCardVO } from './plugin-market-card/PluginMarketCardVO';
 import { RecommendationLists } from './RecommendationLists';
 import type { RecommendationList } from './RecommendationLists';
-import { getCloudServiceClientSync } from '@/app/infra/http';
+import {
+  getCloudServiceClient,
+  getCloudServiceClientSync,
+} from '@/app/infra/http';
 import { useTranslation } from 'react-i18next';
 import { PluginV4, PluginV4Status } from '@/app/infra/entities/plugin';
 import { extractI18nObject } from '@/i18n/I18nProvider';
@@ -253,17 +256,23 @@ function MarketPageContent({
 
   // 初始加载
   useEffect(() => {
-    fetchPlugins(1, false, true);
-    fetchAvailableTags();
-    fetchRecommendationLists();
+    // Resolve the cloud service base URL (from system info) before any
+    // marketplace fetch — otherwise the sync client may still hold the default
+    // URL and hit space.langbot.app instead of the configured instance.
+    (async () => {
+      await getCloudServiceClient();
+      fetchPlugins(1, false, true);
+      fetchAvailableTags();
+      fetchRecommendationLists();
+    })();
     // eslint-disable-next-line react-hooks/exhaustive-deps
   }, []);
 
   // 获取推荐列表（精选，混合插件/MCP/Skill）
   const fetchRecommendationLists = async () => {
     try {
-      const { lists } =
-        await getCloudServiceClientSync().getRecommendationLists();
+      const client = await getCloudServiceClient();
+      const { lists } = await client.getRecommendationLists();
       setRecommendationLists(lists || []);
     } catch (error) {
       console.error('Failed to fetch recommendation lists:', error);