diff --git a/apps/server/src/services/plugins/plugin-api.ts b/apps/server/src/services/plugins/plugin-api.ts
index 47e0a2473..62e4de48e 100644
--- a/apps/server/src/services/plugins/plugin-api.ts
+++ b/apps/server/src/services/plugins/plugin-api.ts
@@ -594,15 +594,21 @@ export function createPluginApi(options: {
     },
   };
 
+  // One reused handle per plugin generation (the SDK contract and the fake
+  // host both promise reuse). A plugin that closes the handle itself gets a
+  // fresh one on the next call; the host closes whatever is open on dispose.
+  let databaseHandle: Database.Database | undefined;
   const storage: PluginStorage = {
     kv,
     database() {
       assertLive();
+      if (databaseHandle?.open) return databaseHandle;
       const dir = join(dataDir, "plugins", pluginId);
       mkdirSync(dir, { recursive: true });
       const database = new Database(join(dir, "data.db"));
       database.pragma("journal_mode = WAL");
       database.pragma("busy_timeout = 5000");
+      databaseHandle = database;
       databaseHandles.push(database);
       return database;
     },