diff --git a/man/rules/meson.build b/man/rules/meson.build
index a7523e3aefd..d9a0f81201f 100644
--- a/man/rules/meson.build
+++ b/man/rules/meson.build
@@ -277,6 +277,7 @@ manpages = [
   ['sd_bus_message_append_string_iovec', 'sd_bus_message_append_string_space'],
   ''],
  ['sd_bus_message_append_strv', '3', [], ''],
+ ['sd_bus_message_at_end', '3', [], ''],
  ['sd_bus_message_copy', '3', [], ''],
  ['sd_bus_message_dump', '3', [], ''],
  ['sd_bus_message_get_cookie', '3', ['sd_bus_message_get_reply_cookie'], ''],
diff --git a/man/sd-bus.xml b/man/sd-bus.xml
index 14ca5c603b5..0a0297bd7b3 100644
--- a/man/sd-bus.xml
+++ b/man/sd-bus.xml
@@ -93,6 +93,7 @@
 <citerefentry><refentrytitle>sd_bus_message_append_basic</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
 <citerefentry><refentrytitle>sd_bus_message_append_string_memfd</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
 <citerefentry><refentrytitle>sd_bus_message_append_strv</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
+<citerefentry><refentrytitle>sd_bus_message_at_end</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
 <citerefentry><refentrytitle>sd_bus_message_copy</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
 <citerefentry><refentrytitle>sd_bus_message_dump</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
 <citerefentry><refentrytitle>sd_bus_message_get_cookie</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
diff --git a/man/sd_bus_message_at_end.xml b/man/sd_bus_message_at_end.xml
new file mode 100644
index 00000000000..ce21c7e748a
--- /dev/null
+++ b/man/sd_bus_message_at_end.xml
@@ -0,0 +1,86 @@
+<?xml version='1.0'?>
+<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
+  "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
+<!-- SPDX-License-Identifier: LGPL-2.1+ -->
+
+<refentry id="sd_bus_message_at_end" xmlns:xi="http://www.w3.org/2001/XInclude">
+  <refentryinfo>
+    <title>sd_bus_message_at_end</title>
+    <productname>systemd</productname>
+  </refentryinfo>
+
+  <refmeta>
+    <refentrytitle>sd_bus_message_at_end</refentrytitle>
+    <manvolnum>3</manvolnum>
+  </refmeta>
+
+  <refnamediv>
+    <refname>sd_bus_message_at_end</refname>
+
+    <refpurpose>Check if a message has been fully read</refpurpose>
+  </refnamediv>
+
+  <refsynopsisdiv>
+    <funcsynopsis>
+      <funcsynopsisinfo>#include &lt;systemd/sd-bus.h&gt;</funcsynopsisinfo>
+
+      <funcprototype>
+        <funcdef>int <function>sd_bus_message_at_end</function></funcdef>
+        <paramdef>sd_bus_message *<parameter>m</parameter></paramdef>
+        <paramdef>int <parameter>complete</parameter></paramdef>
+      </funcprototype>
+    </funcsynopsis>
+  </refsynopsisdiv>
+
+  <refsect1>
+    <title>Description</title>
+
+    <para><function>sd_bus_message_at_end()</function> returns whether all data from the currently opened
+    container in <parameter>m</parameter> or all data from all containers in <parameter>m</parameter> has
+    been read. If <parameter>complete</parameter> is zero, this function returns whether all data from the
+    currently opened container has been read. If <parameter>complete</parameter> is non-zero, this function
+    returns whether all data from all containers in <parameter>m</parameter> has been read.</para>
+  </refsect1>
+
+  <refsect1>
+    <title>Return Value</title>
+
+    <para>If all data from all containers or the current container (depending on the value of
+    <parameter>complete</parameter>) has been read, <function>sd_bus_message_at_end()</function> returns a
+    positive integer. If there is still data left to be read, it returns zero. On failure, it returns a
+    negative errno-style error code.</para>
+
+    <refsect2>
+      <title>Errors</title>
+
+      <para>Returned errors may indicate the following problems:</para>
+
+      <variablelist>
+        <varlistentry>
+          <term><constant>-EINVAL</constant></term>
+
+          <listitem><para>The <parameter>m</parameter> parameter is <constant>NULL</constant>.
+          </para></listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term><constant>-EPERM</constant></term>
+
+          <listitem><para>The message is not sealed.</para></listitem>
+        </varlistentry>
+      </variablelist>
+    </refsect2>
+  </refsect1>
+
+  <xi:include href="libsystemd-pkgconfig.xml" />
+
+  <refsect1>
+    <title>See Also</title>
+
+    <para>
+      <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
+      <citerefentry><refentrytitle>sd-bus</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
+      <citerefentry><refentrytitle>sd_bus_message_read</refentrytitle><manvolnum>3</manvolnum></citerefentry>
+    </para>
+  </refsect1>
+</refentry>