diff --git a/public/script.js b/public/script.js
index 780e28dbd..6b3b10e3a 100644
--- a/public/script.js
+++ b/public/script.js
@@ -2017,6 +2017,20 @@ function getLastMessageId() {
     return '';
 }
 
+/**
+ * Returns the ID of the first message included in the context.
+ * @returns {string} The ID of the first message in the context.
+ */
+function getFirstIncludedMessageId() {
+    const index = document.querySelector('.lastInContext')?.getAttribute('mesid');
+
+    if (!isNaN(index) && index >= 0) {
+        return String(index);
+    }
+
+    return '';
+}
+
 /**
  * Returns the last message in the chat.
  * @returns {string} The last message in the chat.
@@ -2119,6 +2133,7 @@ function substituteParams(content, _name1, _name2, _original, _group, _replaceCh
     content = content.replace(/{{group}}/gi, _group);
     content = content.replace(/{{lastMessage}}/gi, getLastMessage());
     content = content.replace(/{{lastMessageId}}/gi, getLastMessageId());
+    content = content.replace(/{{firstIncludedMessageId}}/gi, getFirstIncludedMessageId());
     content = content.replace(/{{lastSwipeId}}/gi, getLastSwipeId());
     content = content.replace(/{{currentSwipeId}}/gi, getCurrentSwipeId());
 
diff --git a/public/scripts/templates/macros.html b/public/scripts/templates/macros.html
index 2eeb6537c..a3e0e83a0 100644
--- a/public/scripts/templates/macros.html
+++ b/public/scripts/templates/macros.html
@@ -17,6 +17,7 @@
     <li><tt>&lcub;&lcub;char&rcub;&rcub;</tt> – the Character's name</li>
     <li><tt>&lcub;&lcub;lastMessage&rcub;&rcub;</tt> - the text of the latest chat message.</li>
     <li><tt>&lcub;&lcub;lastMessageId&rcub;&rcub;</tt> – index # of the latest chat message. Useful for slash command batching.</li>
+    <li><tt>&lcub;&lcub;firstIncludedMessageId&rcub;&rcub;</tt> - the ID of the first message included in the context. Requires generation to be ran at least once in the current session.</li>
     <li><tt>&lcub;&lcub;currentSwipeId&rcub;&rcub;</tt> – the 1-based ID of the current swipe in the last chat message. Empty string if the last message is user or prompt-hidden.</li>
     <li><tt>&lcub;&lcub;lastSwipeId&rcub;&rcub;</tt> – the number of swipes in the last chat message. Empty string if the last message is user or prompt-hidden.</li>
     <li><tt>&lcub;&lcub;// (note)&rcub;&rcub;</tt> – you can leave a note here, and the macro will be replaced with blank content. Not visible for the AI.</li>