From 6bd793bea5328fdc4af4ec25390871aa49abfab1 Mon Sep 17 00:00:00 2001
From: Yasuhiro Matsumoto <mattn.jp@gmail.com>
Date: Wed, 15 Jul 2026 08:35:16 +0900
Subject: [PATCH] helpers: reject kind numbers above 65535 instead of silently
 truncating them to uint16.

---
 helpers.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/helpers.go b/helpers.go
index 8190b48..524513f 100644
--- a/helpers.go
+++ b/helpers.go
@@ -627,6 +627,9 @@ func getSchema() (schema.Schema, error) {
 
 func stringToKind(value string) (nostr.Kind, error) {
 	if n, err := strconv.Atoi(value); err == nil && n >= 0 {
+		if n > 65535 {
+			return 0, fmt.Errorf("kind number %d is out of range (0-65535)", n)
+		}
 		return nostr.Kind(n), nil
 	}