From 057a0c5843662b675e31dad6a436a7b3e822d7f7 Mon Sep 17 00:00:00 2001
From: "J. Nick Koston" <nick@koston.org>
Date: Mon, 12 Oct 2026 01:31:15 -1000
Subject: [PATCH] [api] Exclude the spare key refill from the loop blocking
 guard (#20574)

---
 esphome/components/api/api_server.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/esphome/components/api/api_server.cpp b/esphome/components/api/api_server.cpp
index 7dad4e390e..f63039a971 100644
--- a/esphome/components/api/api_server.cpp
+++ b/esphome/components/api/api_server.cpp
@@ -237,6 +237,8 @@ void APIServer::refill_spare_ephemeral_() {
       return;
     }
   }
+  // Generating the key pair cannot be split across loop passes
+  UnavoidableBlockingScope scope;
   noise::prepare_spare_ephemeral();
 }
 #endif