From 5dbe2a774124e47468241eb48204347c93ae0420 Mon Sep 17 00:00:00 2001
From: "J. Nick Koston" <nick@home-assistant.io>
Date: Fri, 3 Apr 2026 13:36:32 -1000
Subject: [PATCH] [api] Add comment tying max_data_length = 120 to
 NAME_MAX_LENGTH

---
 esphome/components/api/api.proto | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/esphome/components/api/api.proto b/esphome/components/api/api.proto
index 9b62f8e758..afb66ebb13 100644
--- a/esphome/components/api/api.proto
+++ b/esphome/components/api/api.proto
@@ -308,6 +308,9 @@ enum EntityCategory {
   ENTITY_CATEGORY_DIAGNOSTIC = 2;
 }
 
+// Entity name/object_id max_data_length = 120 matches NAME_MAX_LENGTH
+// in esphome/config_validation.py (validated at config time).
+
 // ==================== BINARY SENSOR ====================
 message ListEntitiesBinarySensorResponse {
   option (id) = 12;