SlitherSessions - Privacy Policy

Last updated: 09 August 2026

SlitherSessions is a browser extension that adds a control panel to slither.io, letting you spawn and manage snakes that are hosted on a private server.

The extension talks only to the private SlitherSessions server configured by the developer. It does not send your data to the developer, to any analytics service, or to any other third party. It does not sell or share your data with anyone. There are no ads and no tracking.

What information is handled

Account credentials - the username and password you create for the SlitherSessions server. These are sent to that server to log you in.
A login token - after you log in, the server returns a token that is stored locally in your browser (localStorage) so you stay signed in.
The server address configured (ss_api), stored locally.
In-game details - your chosen snake name and the server you have selected in slither.io, read from the page only to pre-fill the spawn form and to label your hosted snakes.
Your slither.io game settings and NTL team credentials (opt-in) - if, and only if, you turn on "settings sync" in the panel, the extension sends a specific set of your slither.io / NTL mod settings to your SlitherSessions server so that your hosted snakes match your chosen look and render preferences. The exact data sent is limited to: your snake name (nick), your custom skin, cosmetic selections, team roster, and your NTL settings. (custom_skin, want_custom_skin, cosmetic), your clan tag and its unlock code (tag, hst), your bot's "circles after length" setting (botlen), and the NTL mod's own saved preferences (the ntl_… settings). No other localStorage values are read or sent - unrelated site data, other extensions' data, and your login token are never included in this sync.

The settings sync is off until you explicitly enable it from the panel (an "Allow" prompt shown after you sign in). Until you allow it, none of your game settings leave your browser. You can decline, and hosted snakes will simply use default cosmetics.

Where the information goes

All of the above is sent only to the SlitherSessions server address in the extension. That server is operated by Sav, the developer running the SlitherSessions instance. The server itself is only maintained by the developer. The extension makes no other network requests to any third party.

What is stored on your device

The login token, the configured server address, and (optionally) an operator key are stored in your browser's localStorage for the slither.io origin. You can clear them at any time by logging out in the panel or clearing site data for slither.io.

What is NOT collected

No browsing history, no data from other websites.
No analytics, telemetry, advertising identifiers, or fingerprinting.
No personal information beyond the account you choose to create.
Nothing is ever sold or shared with third parties.

Permissions

The extension runs only on slither.io and slither.com, which it needs in order to add its control panel to the game page. It contains no remote code.

Data collection & your control

Account and snake data live on the SlitherSessions server and are controlled by the developer (for example, the developer, Sav, can remove and add accounts). Locally stored account information is removed when you log out or clear your browser's site data. You can turn the data sync off in the SlitherSessions panel to stop collection if needed.

Changes to this policy

If this policy changes, the "Last updated" date above will change. Continued use after an update means you accept the revised policy.

Contact

Questions about this policy: savfarlands@gmail.com (developed by Sav).