diff --git a/src/server.rs b/src/server.rs
index 2eac9f1..24a39f3 100644
--- a/src/server.rs
+++ b/src/server.rs
@@ -164,7 +164,7 @@ fn not_found_page(path: &str) -> Response {
 const SPA_PREFIXES: &[&str] = &["/c/", "/g/"];
 
 /// 精确匹配的前端页面（没有实体文件，返回入口页）
-const SPA_PAGES: &[&str] = &["/login", "/admin"];
+const SPA_PAGES: &[&str] = &["/login", "/admin", "/interface"];
 
 /// 是否为前端路由路径（没有实体文件，应该返回入口页）。
 fn is_spa_path(path: &str) -> bool {
diff --git a/stash-web/src/App.css b/stash-web/src/App.css
index 129fcd4..76bbbe1 100644
--- a/stash-web/src/App.css
+++ b/stash-web/src/App.css
@@ -133,6 +133,11 @@
   white-space: nowrap;
 }
 
+/* 滚动信息只占中间约 2/3：原来铺满整条，信息一长就把两边挤没了 */
+.header-ticker {
+  max-width: 720px;
+}
+
 .header-actions {
   margin-left: auto;
 }
@@ -1031,6 +1036,22 @@
   gap: var(--su-space-2);
 }
 
+/* 接口一览页 */
+.api-docs {
+  display: flex;
+  flex-direction: column;
+  gap: var(--su-space-5);
+}
+
+.api-path {
+  padding: 0 var(--su-space-2);
+  border-radius: var(--su-radius-xs);
+  background-color: var(--su-bg-subtle);
+  color: var(--su-text-sub);
+  font-family: var(--su-font-mono);
+  font-size: var(--su-font-size-sm);
+}
+
 /* 数据管理：分组下拉与「新建数据」紧挨着 */
 .entry-toolbar {
   display: flex;
diff --git a/stash-web/src/AppNext.tsx b/stash-web/src/AppNext.tsx
index da4a78f..7b05919 100644
--- a/stash-web/src/AppNext.tsx
+++ b/stash-web/src/AppNext.tsx
@@ -18,6 +18,7 @@ import { ItemEditor } from './components/content/ItemEditor'
 import { PosterGrid } from './components/content/PosterGrid'
 import { SectionCard } from './components/content/SectionCard'
 import { SiteHeader } from './components/header/SiteHeader'
+import { ApiDocs } from './components/api/ApiDocs'
 import { GroupMark } from './components/common/GroupMark'
 import { LoginDialog } from './components/auth/LoginDialog'
 import { ProfileCard } from './components/sidebar/ProfileCard'
@@ -59,9 +60,11 @@ type Route =
   | { kind: 'home' }
   | { kind: 'group'; key: string }
   | { kind: 'item'; key: string; itemId: string }
+  | { kind: 'api' }
 
 function parseRoute(pathname: string): Route {
   const segments = pathname.split('/').filter(Boolean)
+  if (segments[0] === 'interface') return { kind: 'api' }
   if (
     (segments[0] === 'g' || segments[0] === 'c') &&
     segments[1] !== undefined
@@ -358,7 +361,7 @@ export default function AppNext() {
   }, [manage.groups])
 
   const activeKey =
-    route.kind === 'home'
+    route.kind === 'home' || route.kind === 'api'
       ? 'home'
       : route.kind === 'group'
         ? `g:${route.key}`
@@ -740,6 +743,7 @@ export default function AppNext() {
           )}
 
           {route.kind === 'home' && renderHome()}
+          {route.kind === 'api' && <ApiDocs />}
           {route.kind === 'group' && renderGroupPage(route.key)}
           {route.kind === 'item' && renderItemPage(route.key, route.itemId)}
         </div>
diff --git a/stash-web/src/components/api/ApiDocs.tsx b/stash-web/src/components/api/ApiDocs.tsx
new file mode 100644
index 0000000..168d7f2
--- /dev/null
+++ b/stash-web/src/components/api/ApiDocs.tsx
@@ -0,0 +1,131 @@
+import { Card, Space, Table, Tag, Text, Title } from '@stash/ui'
+
+/**
+ * 接口一览：把 `/api/*` 按用途分组列出来。
+ *
+ * 页面只做展示，不请求后端——清单跟 `src/server.rs` 的路由表人工对齐，
+ * 改接口时顺手改这里（文件顶部有分组与权限说明）。
+ */
+type Endpoint = {
+  method: 'GET' | 'POST' | 'PATCH' | 'PUT' | 'DELETE'
+  path: string
+  summary: string
+  /** 需要登录会话 */
+  auth?: boolean
+}
+
+const GROUPS: { title: string; desc: string; items: Endpoint[] }[] = [
+  {
+    title: '健康与项目',
+    desc: '托管目录的扫描结果与实时推送。',
+    items: [
+      { method: 'GET', path: '/api/health', summary: '存活检查，返回服务名与状态' },
+      { method: 'GET', path: '/api/projects', summary: '扫描托管目录（每次请求都重新扫描）' },
+      { method: 'GET', path: '/api/projects/events', summary: 'SSE：目录变化时推送最新项目列表' },
+    ],
+  },
+  {
+    title: '内容库',
+    desc: '分区 / 分组 / 条目 / 卡片。写操作都需要登录会话与同源 Origin。',
+    items: [
+      { method: 'GET', path: '/api/catalog', summary: '旧版完整目录（兼容保留）' },
+      { method: 'GET', path: '/api/catalog2', summary: '分组树 + 卡片，后台配置用' },
+      { method: 'GET', path: '/api/catalog/events', summary: 'SSE：内容库变更时推送「该重拉」' },
+      { method: 'POST', path: '/api/nodes', summary: '新建分区 / 分组', auth: true },
+      { method: 'PATCH', path: '/api/nodes/{key}', summary: '改标题、所属、图标、排序、启停', auth: true },
+      { method: 'DELETE', path: '/api/nodes/{key}', summary: '删除分区 / 分组（级联子节点）', auth: true },
+      { method: 'GET', path: '/api/items/{key}', summary: '条目详情' },
+      { method: 'POST', path: '/api/items', summary: '新建条目', auth: true },
+      { method: 'PATCH', path: '/api/items/{key}', summary: '就地编辑（带 updatedAt 乐观锁）', auth: true },
+      { method: 'DELETE', path: '/api/items/{key}', summary: '删除条目', auth: true },
+      { method: 'POST', path: '/api/items/{key}/view', summary: '浏览数 +1' },
+      { method: 'POST', path: '/api/items/{key}/like', summary: '点赞 / 取消点赞' },
+      { method: 'POST', path: '/api/cards', summary: '新建首页卡片', auth: true },
+      { method: 'PATCH', path: '/api/cards/{id}', summary: '改卡片标题 / 顺序', auth: true },
+      { method: 'DELETE', path: '/api/cards/{id}', summary: '删除卡片', auth: true },
+      { method: 'PUT', path: '/api/cards/{id}/groups', summary: '整组替换卡片包含的分组与顺序', auth: true },
+      { method: 'POST', path: '/api/categories', summary: '旧版：新建分类', auth: true },
+      { method: 'PATCH', path: '/api/categories/{id}', summary: '旧版：改分类', auth: true },
+      { method: 'DELETE', path: '/api/categories/{id}', summary: '旧版：删分类', auth: true },
+      { method: 'POST', path: '/api/categories/{id}/groups', summary: '旧版：新建分组', auth: true },
+      { method: 'PATCH', path: '/api/groups/{id}', summary: '旧版：改分组', auth: true },
+      { method: 'DELETE', path: '/api/groups/{id}', summary: '旧版：删分组', auth: true },
+    ],
+  },
+  {
+    title: '站点设置',
+    desc: '页头、侧边栏、卡片、资料、站点信息等整份 JSON。',
+    items: [
+      { method: 'GET', path: '/api/settings', summary: '读取设置（含 version 乐观锁）' },
+      { method: 'PATCH', path: '/api/settings', summary: '整份保存设置', auth: true },
+      { method: 'GET', path: '/api/backup', summary: '下载 SQLite 快照', auth: true },
+    ],
+  },
+  {
+    title: '认证',
+    desc: '单管理员账号；会话 token 只存 sha256，Cookie 为 HttpOnly + SameSite=Strict。',
+    items: [
+      { method: 'GET', path: '/api/auth/session', summary: '当前会话状态（是否登录、是否已设密码）' },
+      { method: 'POST', path: '/api/auth/setup', summary: '首次设置管理员密码（仅空库可用）' },
+      { method: 'POST', path: '/api/auth/login', summary: '登录；连续失败 5 次锁 60 秒' },
+      { method: 'POST', path: '/api/auth/logout', summary: '退出并清掉会话' },
+      { method: 'PATCH', path: '/api/auth/password', summary: '改密码（需当前密码）', auth: true },
+    ],
+  },
+]
+
+const METHOD_TONE = {
+  GET: 'neutral',
+  POST: 'primary',
+  PATCH: 'warning',
+  PUT: 'warning',
+  DELETE: 'danger',
+} as const
+
+export function ApiDocs() {
+  return (
+    <div className="api-docs">
+      <Space direction="column" gap="sm" align="stretch">
+        <Title level={2}>接口一览</Title>
+        <Text size="sm" tone="muted">
+          说明：这是 Stash 自带的 HTTP 接口清单，全部挂在同一个端口上。读接口公开，写接口需要登录会话并校验同源
+          Origin；带 <Tag tone="primary">需登录</Tag> 标记的即为写操作。
+        </Text>
+      </Space>
+
+      {GROUPS.map((group) => (
+        <Card key={group.title} padding="lg">
+          <Space direction="column" gap="sm" align="stretch">
+            <Space gap="sm" align="center">
+              <Title level={4} as="h2">
+                {group.title}
+              </Title>
+              <Text size="sm" tone="muted">
+                {group.items.length} 个
+              </Text>
+            </Space>
+            <Text size="sm" tone="muted">
+              {group.desc}
+            </Text>
+            <Table
+              rowKey="id"
+              columns={[
+                { key: 'method', title: '方法', width: 90 },
+                { key: 'path', title: '路径', width: 280 },
+                { key: 'summary', title: '说明' },
+                { key: 'auth', title: '权限', width: 100 },
+              ]}
+              rows={group.items.map((item) => ({
+                id: `${item.method} ${item.path}`,
+                method: <Tag tone={METHOD_TONE[item.method]}>{item.method}</Tag>,
+                path: <code className="api-path">{item.path}</code>,
+                summary: item.summary,
+                auth: item.auth === true ? <Tag tone="primary">需登录</Tag> : <Text tone="muted">公开</Text>,
+              }))}
+            />
+          </Space>
+        </Card>
+      ))}
+    </div>
+  )
+}
diff --git a/stash-web/src/components/header/SiteHeader.tsx b/stash-web/src/components/header/SiteHeader.tsx
index 7501928..8cf850c 100644
--- a/stash-web/src/components/header/SiteHeader.tsx
+++ b/stash-web/src/components/header/SiteHeader.tsx
@@ -77,7 +77,7 @@ export function SiteHeader({
       />
 
       {headerEnabled && (
-        <Ticker speed={headerSpeed} gap={headerGap} label="运行状态">
+        <Ticker speed={headerSpeed} gap={headerGap} label="运行状态" className="header-ticker">
           {headerItems.map((item, index) => (
             <span className="header-ticker-item" key={`${index}-${item.text}`}>
               {item.tag !== undefined && item.tag !== null && item.tag !== '' && (
diff --git a/stash-web/src/components/sidebar/ServicePanel.tsx b/stash-web/src/components/sidebar/ServicePanel.tsx
index 34ff8ac..7d4b7f5 100644
--- a/stash-web/src/components/sidebar/ServicePanel.tsx
+++ b/stash-web/src/components/sidebar/ServicePanel.tsx
@@ -56,7 +56,7 @@ export function ServicePanel({ projects, live, refreshing, onRefresh }: ServiceP
           重新扫描
         </Button>
 
-        <a className="link-button" href="/api/projects" target="_blank" rel="noreferrer">
+        <a className="link-button" href="/interface">
           <Icon name="link_3_line" />
           查看接口
         </a>