Dacapo 隐私政策
Dacapo 是一个浏览器扩展，用 AI 帮你整理浏览器里的书签。我们的原则是：你的书签留在你自己的浏览器里，我们不建书签库、不同步到云端、不卖数据、不放广告。
我们会处理哪些数据
| 什么时候 | 处理什么 | 去哪里、留多久 |
|---|---|---|
| 登录 | 你关注微信服务号后，微信给我们的一个用户标识（openid），以及登录凭证 | 存在我们的服务器上，用来确认是你在使用。不包含你的微信昵称、头像、手机号 |
| 一键整理、收藏时自动归类 | 书签的标题、网址和所在文件夹的名字 | 经我们的服务器发给 AI 服务（DeepSeek）算出分类和新标题，处理完就丢掉，服务器不保存 |
| 按意思搜书签 | 书签的标题、网址、文件夹名，以及你在搜索框里输入的词 | 经我们的服务器发给 AI 服务：DeepSeek 写一句说明，阿里云通义千问算出搜索用的向量。说明和向量只存在你的浏览器里，服务器不保存 |
| 存下窗口里的标签页 | 当前窗口里各标签页的标题和网址 | 标签页存成你浏览器里的书签；标题和网址发给 AI 服务起一个文件夹名，服务器不保存 |
| 查哪些页面已经没了 | 书签的网址 | 只在你的浏览器里直接访问这些网址，看它们还在不在，结果不上传。为此会临时申请访问网站的权限，查完马上收回 |
新标签页上的"常去网站"、今日重温、整理前的备份，都只在你的浏览器里读取和保存，不会上传。
我们不做的事
- 不保存你的书签内容，不建云端书签库
- 不记录你的浏览历史，不追踪你访问了哪些网页
- 不出售、不出租任何数据，不用于广告
- 上面列出的 AI 服务只用于完成你点的那一次操作
扩展要的权限和用途
| 权限 | 用途 |
|---|---|
bookmarks | 读取和整理你的书签，这是扩展的主要功能 |
storage、unlimitedStorage | 在你的浏览器里保存登录状态、整理前的备份和搜索索引 |
tabs | 读取当前窗口标签页的标题和网址，用于"存下这个窗口的标签页" |
topSites | 在新标签页上显示你常去的网站 |
favicon | 显示书签对应网站的小图标 |
search | 书签里搜不到时，用你浏览器默认的搜索引擎搜 |
| 访问所有网站（可选） | 只在你点"查一查"时临时申请，用来查书签网址还在不在，查完收回 |
怎么删除
卸载扩展，存在浏览器里的备份、搜索索引和登录状态会一起删除；你的书签本身不受影响。要删除服务器上的登录记录，写信给 info@nietzsci.com，我们会在 7 个工作日内处理。
联系我们
对这份政策有疑问，写信给 info@nietzsci.com。政策有变化时，我们会更新本页并改上面的日期。
Dacapo Privacy Policy
Dacapo is a browser extension that uses AI to organize the bookmarks in your browser. Your bookmarks stay in your browser. We do not keep a bookmark library, do not sync to the cloud, do not sell data and do not show ads.
What we process
| When | What | Where it goes and for how long |
|---|---|---|
| Sign-in | The user identifier (openid) WeChat gives us after you follow our official account, and a sign-in token | Stored on our server to recognise you. It does not include your WeChat nickname, avatar or phone number |
| One-click tidy and auto-filing new bookmarks | Bookmark titles, URLs and folder names | Sent through our server to an AI service (DeepSeek) to work out folders and cleaner titles, then discarded. Not stored on our server |
| Search by meaning | Bookmark titles, URLs and folder names, and what you type in the search box | Sent through our server to AI services: DeepSeek writes a short description and Alibaba Cloud Qwen computes search vectors. Descriptions and vectors are kept only in your browser |
| Saving the tabs of a window | Titles and URLs of the tabs in the current window | Saved as bookmarks in your browser; titles and URLs are sent to an AI service to name the folder, not stored on our server |
| Finding pages that no longer exist | Bookmark URLs | Your browser visits these URLs directly to see whether they still exist. Results are not uploaded. Permission to access websites is requested only for this and removed right after |
Your frequently visited sites on the new tab page, the daily revisit and pre-tidy backups are read and stored only in your browser.
What we do not do
- We do not store your bookmarks or build a cloud bookmark library
- We do not record your browsing history or track the pages you visit
- We do not sell or rent any data and do not use it for advertising
- The AI services above are used only to carry out the action you started
Permissions
| Permission | Why |
|---|---|
bookmarks | Read and organize your bookmarks, the core feature |
storage, unlimitedStorage | Keep sign-in state, pre-tidy backups and the search index in your browser |
tabs | Read the titles and URLs of the tabs in the current window to save them as bookmarks |
topSites | Show your frequently visited sites on the new tab page |
favicon | Show website icons next to bookmarks |
search | Search with your default search engine when nothing matches in your bookmarks |
| Access to all sites (optional) | Requested only when you click to check for dead links, and removed right after |
Deleting your data
Uninstalling the extension removes the backups, search index and sign-in state stored in your browser; your bookmarks are not affected. To delete your sign-in record on our server, email info@nietzsci.com and we will handle it within 7 working days.
Contact
Questions about this policy: info@nietzsci.com. If the policy changes, we will update this page and the date above.