diff --git a/src/backend/functions/get-scores.ts b/src/backend/functions/get-scores.ts
index 70adf25..739c66d 100644
--- a/src/backend/functions/get-scores.ts
+++ b/src/backend/functions/get-scores.ts
@@ -1,6 +1,26 @@
 import { User } from '../models/entities/user';
 import { toSignedString } from '../../common/functions/to-signed-string';
 import {Count} from '../models/count';
+import {api} from '../services/misskey';
+import {Score} from '../../common/types/score';
+import {MiUser} from './update-score';
+
+/**
+ * ユーザーのスコアを取得します。
+ * @param user ユーザー
+ * @returns ユーザーのスコア
+ */
+export const getScores = async (user: User): Promise<Score> => {
+	// TODO 毎回取ってくるのも微妙なので、ある程度キャッシュしたいかも
+	const miUser = await api<MiUser>(user.host, 'users/show', { username: user.username }, user.token);
+
+	return {
+		notesCount: miUser.notesCount,
+		followingCount: miUser.followingCount,
+		followersCount: miUser.followersCount,
+		...getDelta(user, miUser),
+	};
+};
 
 /**
  * ユーザーのスコア差分を取得します。
diff --git a/src/backend/services/misskey.ts b/src/backend/services/misskey.ts
index 3fe6e71..775bb0b 100644
--- a/src/backend/services/misskey.ts
+++ b/src/backend/services/misskey.ts
@@ -9,7 +9,7 @@ const RETRY_COUNT = 5;
 /**
  * Misskey APIを呼び出す
  */
-export const api = async <T = Record<string, unknown>>(host: string, endpoint: string, arg: Record<string, unknown>, token?: string): Promise<T> => {
+export const api = async <T extends Record<string, unknown> = Record<string, unknown>>(host: string, endpoint: string, arg: Record<string, unknown>, token?: string): Promise<T> => {
 	const a = { ...arg };
 	if (token) {
 		a.i = token;
diff --git a/src/backend/services/send-alert.ts b/src/backend/services/send-alert.ts
index d313278..e1cc472 100644
--- a/src/backend/services/send-alert.ts
+++ b/src/backend/services/send-alert.ts
@@ -1,5 +1,30 @@
 import { User } from '../models/entities/user';
 import { api } from './misskey';
+import {format} from '../../common/functions/format';
+import {getScores} from '../functions/get-scores';
+
+
+/**
+ * アラートを送信する
+ * @param user ユーザー
+ */
+export const sendAlert = async (user: User) => {
+	const text = format(user, await getScores(user));
+	switch (user.alertMode) {
+		case 'note':
+			await sendNoteAlert(text, user);
+			break;
+		case 'notification':
+			await sendNotificationAlert(text, user);
+			break;
+		case 'both':
+			await Promise.all([
+				sendNotificationAlert(text, user),
+				sendNoteAlert(text, user),
+			]);
+			break;
+	}
+};
 
 /**
  * ノートアラートを送信する
diff --git a/src/common/types/log.ts b/src/common/types/log.ts
new file mode 100644
index 0000000..a119392
--- /dev/null
+++ b/src/common/types/log.ts
@@ -0,0 +1,5 @@
+export type Log = {
+	text: string;
+	level: 'error' | 'warn' | 'info';
+	timestamp: Date;
+}
diff --git a/src/frontend/App.tsx b/src/frontend/App.tsx
index 813d1cc..7c99ef6 100644
--- a/src/frontend/App.tsx
+++ b/src/frontend/App.tsx
@@ -6,11 +6,13 @@ import { useTranslation } from 'react-i18next';
 import { store } from './store';
 import { ModalComponent } from './Modal';
 import { useTheme } from './misc/theme';
-import { BREAKPOINT_SM } from './const';
+import {BREAKPOINT_SM, LOCALSTORAGE_KEY_ACCOUNTS} from './const';
 import { useGetSessionQuery } from './services/session';
 import { Router } from './Router';
-import { setMobile } from './store/slices/screen';
+import {setAccounts, setMobile} from './store/slices/screen';
 import { GeneralLayout } from './GeneralLayout';
+import {$get} from './misc/api';
+import {IUser} from '../common/types/user';
 
 const AppInner : React.VFC = () => {
 	const { data: session } = useGetSessionQuery(undefined);
@@ -35,6 +37,11 @@ const AppInner : React.VFC = () => {
 		}
 	}, [$location]);
 
+	useEffect(() => {
+		const accounts = JSON.parse(localStorage.getItem(LOCALSTORAGE_KEY_ACCOUNTS) || '[]') as string[];
+		Promise.all(accounts.map(token => $get<IUser>('session', token))).then(a => dispatch(setAccounts(a as IUser[])));
+	}, [dispatch]);
+
 	useEffect(() => {
 		const qMobile = window.matchMedia(`(max-width: ${BREAKPOINT_SM})`);
 		const syncMobile = (ev: MediaQueryListEvent) => dispatch(setMobile(ev.matches));
diff --git a/src/frontend/components/LogView.tsx b/src/frontend/components/LogView.tsx
new file mode 100644
index 0000000..9a41a57
--- /dev/null
+++ b/src/frontend/components/LogView.tsx
@@ -0,0 +1,50 @@
+import React, {useMemo, useState} from 'react';
+import {Log} from '../../common/types/log';
+import dayjs from 'dayjs';
+
+const LogItem: React.FC<{log: Log}> = ({log}) => {
+	const time = dayjs(log.timestamp).format('hh:mm:ss');
+
+	return (
+		<div className={`log ${log.level}`}>
+			[{time}] {log.text}
+		</div>
+	);
+};
+
+export const LogView: React.FC<{log: Log[]}> = ({log}) => {
+	const [isVisibleInfo, setVisibleInfo] = useState(true);
+	const [isVisibleWarn, setVisibleWarn] = useState(true);
+	const [isVisibleError, setVisibleError] = useState(true);
+
+	const filter = useMemo(() => {
+		const levels: Log['level'][] = [];
+		if (isVisibleError) levels.push('error');
+		if (isVisibleWarn) levels.push('warn');
+		if (isVisibleInfo) levels.push('info');
+
+		return levels;
+	}, [isVisibleError, isVisibleWarn, isVisibleInfo]);
+
+	const filteredLog = useMemo(() => log.filter(l => filter.includes(l.level)), [log, filter]);
+
+	return (
+		<>
+			<label className="input-check">
+				<input type="checkbox" checked={isVisibleInfo} onChange={e => setVisibleInfo(e.target.checked)} />
+				<span><i className="fas fa-circle-info fa-fw" /> INFO</span>
+			</label>
+			<label className="input-check">
+				<input type="checkbox" checked={isVisibleWarn} onChange={e => setVisibleWarn(e.target.checked)} />
+				<span><i className="fas fa-circle-exclamation fa-fw" /> WARN</span>
+			</label>
+			<label className="input-check">
+				<input type="checkbox" checked={isVisibleError} onChange={e => setVisibleError(e.target.checked)} />
+				<span><i className="fas fa-circle-xmark fa-fw" /> ERROR</span>
+			</label>
+			<div className="log-view vstack slim">
+				{filteredLog.map(l => <LogItem log={l} key={l.text} />)}
+			</div>
+		</>
+	);
+};
diff --git a/src/frontend/pages/admin.tsx b/src/frontend/pages/admin.tsx
index 8a3efa2..c20bf9b 100644
--- a/src/frontend/pages/admin.tsx
+++ b/src/frontend/pages/admin.tsx
@@ -8,6 +8,8 @@ import { $delete, $get, $post, $put } from '../misc/api';
 import { showModal } from '../store/slices/screen';
 import { useDispatch } from 'react-redux';
 import { useTitle } from '../hooks/useTitle';
+import {Log} from '../../common/types/log';
+import {LogView} from '../components/LogView';
 
 
 export const AdminPage: React.VFC = () => {
@@ -25,7 +27,7 @@ export const AdminPage: React.VFC = () => {
 	const [draftTitle, setDraftTitle] = useState('');
 	const [draftBody, setDraftBody] = useState('');
 
-	const [misshaiLog, setMisshaiLog] = useState<string[] | null>(null);
+	const [misshaiLog, setMisshaiLog] = useState<Log[] | null>(null);
 
 	const submitAnnouncement = async () => {
 		if (selectedAnnouncement) {
@@ -64,7 +66,7 @@ export const AdminPage: React.VFC = () => {
 	};
 
 	const fetchLog = () => {
-		$get<string[]>('admin/misshai/log').then(setMisshaiLog);
+		$get<Log[]>('admin/misshai/log').then(setMisshaiLog);
 	};
 
 	const onClickStartMisshaiAlertWorkerButton = () => {
@@ -163,7 +165,7 @@ export const AdminPage: React.VFC = () => {
 											))}
 											{!isDeleteMode && (
 												<button className="item fluid" onClick={() => setEditMode(true)}>
-													<i className="icon fas fa-plus"/ >
+													<i className="icon fas fa-plus" />
 													Create New
 												</button>
 											)}
@@ -200,7 +202,7 @@ export const AdminPage: React.VFC = () => {
 								ミス廃アラートワーカーを強制起動する
 							</button>
 							<h3>直近のワーカーエラー</h3>
-							<pre><code>{misshaiLog?.join('\n') ?? 'なし'}</code></pre>
+							{misshaiLog && <LogView log={misshaiLog} />}
 						</div>
 					</>
 				)
diff --git a/src/frontend/pages/index.session.tsx b/src/frontend/pages/index.session.tsx
index d71efcb..8bc0080 100644
--- a/src/frontend/pages/index.session.tsx
+++ b/src/frontend/pages/index.session.tsx
@@ -1,28 +1,17 @@
-import React, { useEffect }  from 'react';
+import React from 'react';
 
 import { useTranslation } from 'react-i18next';
-import { useDispatch } from 'react-redux';
-import { LOCALSTORAGE_KEY_ACCOUNTS } from '../const';
-import { IUser } from '../../common/types/user';
-import { setAccounts } from '../store/slices/screen';
 import { useGetScoreQuery, useGetSessionQuery } from '../services/session';
-import { $get } from '../misc/api';
 import { useAnnouncements } from '../hooks/useAnnouncements';
 import { Link } from 'react-router-dom';
 
 export const IndexSessionPage: React.VFC = () => {
 	const {t} = useTranslation();
-	const dispatch = useDispatch();
 	const { data: session } = useGetSessionQuery(undefined);
 	const score = useGetScoreQuery(undefined);
 
 	const announcements = useAnnouncements();
 
-	useEffect(() => {
-		const accounts = JSON.parse(localStorage.getItem(LOCALSTORAGE_KEY_ACCOUNTS) || '[]') as string[];
-		Promise.all(accounts.map(token => $get<IUser>('session', token))).then(a => dispatch(setAccounts(a as IUser[])));
-	}, [dispatch]);
-
 	return (
 		<article className="fade">
 			<section>
diff --git a/src/frontend/style.scss b/src/frontend/style.scss
index d33cf54..99d90d2 100644
--- a/src/frontend/style.scss
+++ b/src/frontend/style.scss
@@ -166,4 +166,20 @@ small {
     height: 1em;
     width: 1em;
     vertical-align: -0.1em;
+}
+
+.log-view {
+    background-color: var(--black);
+}
+
+.log {
+    &.info {
+        color: var(--skyblue);
+    }
+    &.error {
+        color: var(--red);
+    }
+    &.warn {
+        color: var(--yellow);
+    }
 }
\ No newline at end of file