diff --git a/adm/activitypub_form.php b/adm/activitypub_form.php
new file mode 100644
index 0000000..b1751e8
--- /dev/null
+++ b/adm/activitypub_form.php
@@ -0,0 +1,55 @@
+<?php
+$sub_menu = "990100";
+require_once './_common.php';
+
+auth_check_menu($auth, $sub_menu, 'w');
+
+$g5['title'] = '액티비티 생성';
+require_once './admin.head.php';
+
+// add_javascript('js 구문', 출력순서); 숫자가 작을 수록 먼저 출력됨
+add_javascript(G5_POSTCODE_JS, 0);    //다음 주소 js
+?>
+
+<form name="factivity" id="factivity" action="./activitypub_form_update.php" method="post" enctype="multipart/form-data">
+    <div>
+		<input type="hidden" name="token" value="">
+	</div>
+	
+    <div class="tbl_frm01 tbl_wrap">
+        <table>
+            <caption><?php echo $g5['title']; ?></caption>
+            <colgroup>
+                <col class="grid_4">
+                <col>
+            </colgroup>
+            <tbody>
+                <tr>
+                    <th scope="row"><label for="object_id">원글 URL</label></th>
+                    <td>
+                        <input type="text" id="object_id" name="object_id" value="" class="frm_input" size="45">
+                    </td>
+                </tr>
+				<tr>
+                    <th scope="row"><label for="to">전송할 위치</label></th>
+                    <td>
+                        <input type="text" id="to" name="to" value="" class="frm_input" size="45"> (쉼표로 구분)
+                    </td>
+                </tr>
+				<tr>
+                    <th scope="row"><label for="content">내용</label></th>
+                    <td>
+						<textarea id="content" name="content" rows="20"></textarea>
+                    </td>
+				</tr>
+			</tbody>
+		</table>
+	</div>
+	
+    <div class="btn_fixed_top">
+        <input type="submit" name="act_button" value="전송" onclick="document.pressed=this.value" class="btn btn_01">
+    </div>
+</form>
+
+<?php
+require_once './admin.tail.php';
diff --git a/adm/activitypub_form_update.php b/adm/activitypub_form_update.php
new file mode 100644
index 0000000..5d4a372
--- /dev/null
+++ b/adm/activitypub_form_update.php
@@ -0,0 +1,18 @@
+<?php
+$sub_menu = "200100";
+require_once './_common.php';
+
+check_demo();
+
+auth_check_menu($auth, $sub_menu, 'w');
+
+check_admin_token();
+
+$object_id = isset($_POST['object_id']) ? trim($_POST['object_id']) : '';
+$to = isset($_POST['to']) ? trim($_POST['to']) : '';
+$content = isset($_POST['content']) ? trim($_POST['content']) : '';
+
+$data = activitypub_publish_content($content, $object_id, $member, array(), explode(',', $to));
+activitypub_add_activity("outbox", $data, $member);
+
+goto_url('./activitypub_outbox.php');
diff --git a/adm/activitypub_inbox.php b/adm/activitypub_inbox.php
new file mode 100644
index 0000000..0f5c76c
--- /dev/null
+++ b/adm/activitypub_inbox.php
@@ -0,0 +1,126 @@
+<?php
+$sub_menu = "990200";
+require_once './_common.php';
+
+auth_check_menu($auth, $sub_menu, 'r');
+
+$sql_common = " from " . ACTIVITYPUB_G5_TABLENAME . " ";
+
+$sql_search = " where ca_name = 'inbox' ";
+
+if ($stx) {
+    $sql_search .= " and ( ";
+    switch ($sfl) {
+        case "mb_id":
+            $sql_search .= " ({$sfl} = '{$stx}') ";
+            break;
+        default:
+            $sql_search .= " ({$sfl} like '%{$stx}%') ";
+            break;
+    }
+    $sql_search .= " ) ";
+}
+
+if ($sst) {
+    $sql_order = " order by {$sst} {$sod} ";
+} else {
+    $sql_order = " order by wr_datetime desc ";
+}
+
+$sql = " select count(*) as cnt {$sql_common} {$sql_search} {$sql_order} ";
+$row = sql_fetch($sql);
+$total_count = $row['cnt'];
+
+$rows = $config['cf_page_rows'];
+$total_page  = ceil($total_count / $rows);  // 전체 페이지 계산
+if ($page < 1) {
+    $page = 1; // 페이지가 없으면 첫 페이지 (1 페이지)
+}
+$from_record = ($page - 1) * $rows; // 시작 열을 구함
+
+$sql = " select * {$sql_common} {$sql_search} {$sql_order} limit {$from_record}, {$rows} ";
+$result = sql_query($sql);
+
+$listall = '<a href="' . $_SERVER['SCRIPT_NAME'] . '" class="ov_listall">처음</a>';
+
+$g5['title'] = '액티비티 수신함';
+require_once './admin.head.php';
+
+$colspan = 3;
+?>
+
+<form name="fsearch" id="fsearch" class="local_sch01 local_sch" method="get">
+    <label for="sfl" class="sound_only">검색대상</label>
+    <select name="sfl" id="sfl">
+        <option value="wr_7" <?php echo get_selected($sfl, "wr_7"); ?>>수신자</option>
+        <option value="wr_content" <?php echo get_selected($sfl, "wr_content"); ?>>내용</option>
+    </select>
+    <label for="stx" class="sound_only">검색어<strong class="sound_only"> 필수</strong></label>
+    <input type="text" name="stx" id="stx" value="<?php echo $stx ?>" required class="required frm_input">
+    <input type="submit" value="검색" class="btn_submit">
+</form>
+
+<div class="tbl_head01 tbl_wrap">
+    <table>
+        <caption><?php echo $g5['title']; ?> 목록</caption>
+        <thead>
+            <tr>
+                <th scope="col">수신시간</th>
+                <th scope="col">수신자</th>
+                <th scope="col">내용</th>
+            </tr>
+        </thead>
+        <tbody>
+<?php
+        for ($i = 0; $row = sql_fetch_array($result); $i++) {
+            
+            $activities = array();
+            $sql2 = "select * from {$g5['board_file_table']}
+                where bo_table = '" . ACTIVITYPUB_G5_BOARDNAME . "' and wr_id = '{$row['wr_id']}' and bf_content = 'application/activity+json'";
+            $result2 = sql_query($sql2);
+            while ($row2 = sql_fetch_array($result2)) {
+                $filename = $row2['bf_file'];
+                $filepath = G5_DATA_PATH . "/file/" . ACTIVITYPUB_G5_BOARDNAME . "/" . $filename;
+                if(file_exists($filepath)) {
+                    array_push($activities, activitypub_json_decode(file_get_contents($filepath), true));
+                }
+            }
+            
+?>
+        <tr>
+            <td><?php echo $row['wr_datetime']; ?></td>
+            <td><?php echo implode(', ', explode(',', $row['wr_7'])); ?></td>
+            <td><?php echo $row['wr_content']; ?></td>
+        </tr>
+
+        <tr>
+            <td colspan="<?php echo $colspan; ?>">
+<?php
+                if (count($activities) > 0) {
+                    foreach($activities as $activity) {
+?>
+                <textarea rows="10" readonly="readonly" style="border: 0; margin:0; padding: 0; background: none;"><?php echo json_encode($activity, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES); ?></textarea>
+<?php
+                    }
+                } else {
+?>
+                <textarea rows="10" readonly="readonly" style="border: 0; margin:0; padding: 0; background: none;">첨부된 전문이 없습니다.</textarea>
+<?php
+                }
+?>
+            </td>
+        </tr>
+<?php
+        }
+?>
+        </tbody>
+    </table>
+</div>
+
+<?php
+$pagelist = get_paging(G5_IS_MOBILE ? $config['cf_mobile_pages'] : $config['cf_write_pages'], $page, $total_page, $_SERVER['SCRIPT_NAME'] . '?' . $qstr . '&amp;page=');
+echo $pagelist;
+?>
+
+<?php
+require_once './admin.tail.php';
diff --git a/adm/activitypub_outbox.php b/adm/activitypub_outbox.php
new file mode 100644
index 0000000..b24a91f
--- /dev/null
+++ b/adm/activitypub_outbox.php
@@ -0,0 +1,126 @@
+<?php
+$sub_menu = "990300";
+require_once './_common.php';
+
+auth_check_menu($auth, $sub_menu, 'r');
+
+$sql_common = " from " . ACTIVITYPUB_G5_TABLENAME . " ";
+
+$sql_search = " where ca_name = 'outbox' ";
+
+if ($stx) {
+    $sql_search .= " and ( ";
+    switch ($sfl) {
+        case "mb_id":
+            $sql_search .= " ({$sfl} = '{$stx}') ";
+            break;
+        default:
+            $sql_search .= " ({$sfl} like '%{$stx}%') ";
+            break;
+    }
+    $sql_search .= " ) ";
+}
+
+if ($sst) {
+    $sql_order = " order by {$sst} {$sod} ";
+} else {
+    $sql_order = " order by wr_datetime desc ";
+}
+
+$sql = " select count(*) as cnt {$sql_common} {$sql_search} {$sql_order} ";
+$row = sql_fetch($sql);
+$total_count = $row['cnt'];
+
+$rows = $config['cf_page_rows'];
+$total_page  = ceil($total_count / $rows);  // 전체 페이지 계산
+if ($page < 1) {
+    $page = 1; // 페이지가 없으면 첫 페이지 (1 페이지)
+}
+$from_record = ($page - 1) * $rows; // 시작 열을 구함
+
+$sql = " select * {$sql_common} {$sql_search} {$sql_order} limit {$from_record}, {$rows} ";
+$result = sql_query($sql);
+
+$listall = '<a href="' . $_SERVER['SCRIPT_NAME'] . '" class="ov_listall">처음</a>';
+
+$g5['title'] = '액티비티 발신함';
+require_once './admin.head.php';
+
+$colspan = 3;
+?>
+
+<form name="fsearch" id="fsearch" class="local_sch01 local_sch" method="get">
+    <label for="sfl" class="sound_only">검색대상</label>
+    <select name="sfl" id="sfl">
+        <option value="mb_id" <?php echo get_selected($sfl, "mb_id"); ?>>발신자</option>
+        <option value="wr_content" <?php echo get_selected($sfl, "wr_content"); ?>>내용</option>
+    </select>
+    <label for="stx" class="sound_only">검색어<strong class="sound_only"> 필수</strong></label>
+    <input type="text" name="stx" id="stx" value="<?php echo $stx ?>" required class="required frm_input">
+    <input type="submit" value="검색" class="btn_submit">
+</form>
+
+<div class="tbl_head01 tbl_wrap">
+    <table>
+        <caption><?php echo $g5['title']; ?> 목록</caption>
+        <thead>
+            <tr>
+                <th scope="col">수신시간</th>
+                <th scope="col">발신자</th>
+                <th scope="col">내용</th>
+            </tr>
+        </thead>
+        <tbody>
+<?php
+        for ($i = 0; $row = sql_fetch_array($result); $i++) {
+            
+            $activities = array();
+            $sql2 = "select * from {$g5['board_file_table']}
+                where bo_table = '" . ACTIVITYPUB_G5_BOARDNAME . "' and wr_id = '{$row['wr_id']}' and bf_content = 'application/activity+json'";
+            $result2 = sql_query($sql2);
+            while ($row2 = sql_fetch_array($result2)) {
+                $filename = $row2['bf_file'];
+                $filepath = G5_DATA_PATH . "/file/" . ACTIVITYPUB_G5_BOARDNAME . "/" . $filename;
+                if(file_exists($filepath)) {
+                    array_push($activities, activitypub_json_decode(file_get_contents($filepath), true));
+                }
+            }
+            
+?>
+        <tr>
+            <td><?php echo $row['wr_datetime']; ?></td>
+            <td><?php echo $row['mb_id']; ?></td>
+            <td><?php echo $row['wr_content']; ?></td>
+        </tr>
+
+        <tr>
+            <td colspan="<?php echo $colspan; ?>">
+<?php
+                if (count($activities) > 0) {
+                    foreach($activities as $activity) {
+?>
+                <textarea rows="10" readonly="readonly" style="border: 0; margin:0; padding: 0; background: none;"><?php echo json_encode($activity, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES); ?></textarea>
+<?php
+                    }
+                } else {
+?>
+                <textarea rows="10" readonly="readonly" style="border: 0; margin:0; padding: 0; background: none;">첨부된 전문이 없습니다.</textarea>
+<?php
+                }
+?>
+            </td>
+        </tr>
+<?php
+        }
+?>
+        </tbody>
+    </table>
+</div>
+
+<?php
+$pagelist = get_paging(G5_IS_MOBILE ? $config['cf_mobile_pages'] : $config['cf_write_pages'], $page, $total_page, $_SERVER['SCRIPT_NAME'] . '?' . $qstr . '&amp;page=');
+echo $pagelist;
+?>
+
+<?php
+require_once './admin.tail.php';
diff --git a/adm/admin.menu990.php b/adm/admin.menu990.php
new file mode 100644
index 0000000..69ec623
--- /dev/null
+++ b/adm/admin.menu990.php
@@ -0,0 +1,7 @@
+<?php
+$menu["menu990"] = array(
+    array('990000', 'ActivityPub', '' . G5_ADMIN_URL . '/activitypub_form.php', 'board'),
+    array('990100', '액티비티 생성', '' . G5_ADMIN_URL . '/activitypub_form.php', 'board'),
+    array('990200', '액티비티 수신함', '' . G5_ADMIN_URL . '/activitypub_inbox.php', 'board'),
+    array('990300', '액티비티 발신함', '' . G5_ADMIN_URL . '/activitypub_outbox.php', 'board'),
+);