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Privacy Policy

Last Updated: May 2026

1. Introduction

Arknights Global Gacha Helper is an open source tool to help players export and analyze gacha records.

This privacy policy explains how we handle your data.

2. Data We Collect

We only read the following specific auth info with your explicit action:

• Your login Cookie

3. How We Use Your Data

• Single Purpose: These are ONLY used to fetch your gacha records from Yostar servers and destroyed immediately.
• No Third-Party Sharing: We do not share these with any third parties.
• No Other Uses: Credentials won't be used for anything else.

4. Data Transfer and Storage

Auth info is sent securely via HTTPS to our Firebase server for proxying due to CORS.

• Secure Transfer: All communications are HTTPS/TLS encrypted.
• No Persistent Storage of Tokens: Records are temporarily cached by UID, but your login status, Cookies, and Tokens are NEVER persistently stored.

5. Extension Permissions Justification

Our extension requires these permissions:

• cookies: To read Yostar login cookies.
• scripting: To extract X-Role-Token.
• activeTab: Ensures extension only runs when clicked on official page.
• storage: To temporarily store extracted tokens.

6. Your Rights

Using this tool means you consent to short-term processing of auth info.

To revoke consent:

1. Click Logout on our site.
2. Remove the extension.
3. Logout from the Yostar official site.

7. Contact Us

If you have questions, please open an issue on our GitHub repository.