--- a/libpurple/purpleconversation.h	Sat Aug 09 18:21:54 2025 -0500
+++ b/libpurple/purpleconversation.h	Sun Aug 10 23:44:08 2025 +0800
@@ -31,6 +31,7 @@
 #include <glib-object.h>
 
 #include "purpleimage.h"
+#include "purplemessage.h"
 #include "purpleconversationmembers.h"
 #include "purpletyping.h"
 #include "purpleversion.h"
@@ -1044,6 +1045,19 @@
 PurpleConversationMember *purple_conversation_find_or_add_member(PurpleConversation *conversation, PurpleContactInfo *info, gboolean announce, const char *message);
 
 /**
+ * purple_conversation_find_message_by_id:
+ * @id: The id of the message.
+ *
+ * Looks up a message in a conversation based on its id property.
+ *
+ * Returns: (transfer none): The message if found, otherwise %NULL.
+ *
+ * Since: 3.0
+ */
+PURPLE_AVAILABLE_IN_3_0
+PurpleMessage *purple_conversation_find_message_by_id(PurpleConversation *conversation, const char *id);
+
+/**
  * purple_conversation_get_url:
  *
  * Gets the URL associated with the conversation.