Template notice. This document is provided for transparency and is not a substitute for legal counsel. Poly Syncer does not run analytics or advertising cookies. The list below is the complete inventory of cookies the site can set.
A cookie is a small text file that a website asks your browser to store and send back on the next visit. Cookies are used for everything from remembering a logged-in session to tracking advertising performance. Because Poly Syncer is a privacy-first service, the site is configured to set as few cookies as is technically possible while still functioning.
1. What cookies are
Cookies are small key-value pairs stored by the browser. They can be classified by who sets them (first-party or third-party), by how long they last (session or persistent), and by what they are used for (strictly necessary, preference, analytics, advertising). Poly Syncer uses only first-party, strictly necessary or preference cookies. There are no third-party cookies, no analytics cookies, and no advertising cookies on the site.
2. Cookies we set
The complete inventory is the table below. There are no other cookies.
| Name | Purpose | Duration | Type |
|---|---|---|---|
polysyncer_session |
Maintains your authenticated panel session after you sign an EIP-712 login. Without this cookie the panel cannot remember which wallet is connected from one page to the next. | Session (cleared when the browser tab closes) | Strictly necessary |
polysyncer_csrf |
Holds a per-session anti-CSRF token. The panel rejects state-changing requests that do not include this token, which prevents a malicious site from triggering actions on your behalf. | Session | Strictly necessary |
polysyncer_theme |
Remembers your dark or light theme preference so the site does not flash the wrong theme on first paint. The cookie holds only the literal string dark or light. |
180 days | Preference (no tracking) |
3. Cookies we do not set
For clarity, the site does not set, and does not allow third-parties to set, any of the following:
- Analytics cookies (no Google Analytics, Plausible, Fathom, Matomo, or similar).
- Advertising or retargeting cookies (no Meta Pixel, Google Ads tag, LinkedIn Insight, TikTok Pixel, or similar).
- Social-media share or login cookies.
- Cross-site tracking identifiers, fingerprints, or advertising IDs.
- Customer-data-platform cookies, A/B-testing cookies, or session-replay cookies.
The full data picture is described in the privacy policy.
4. How to disable cookies
You can disable, block, or delete cookies through your browser settings. Doing so will not break browsing, but it will sign you out of the panel on every page load (because the session cookie cannot persist) and will reset the theme to the default on each visit.
- Manage cookies in Google Chrome
- Manage cookies in Mozilla Firefox
- Manage cookies in Safari
- Manage cookies in Microsoft Edge
- Manage cookies in Brave
The control panel also offers a "minimum cookies" toggle that suppresses the theme preference cookie if you prefer to leave only the strictly necessary session and CSRF cookies enabled.
5. Changes to this policy
If a new cookie is ever added to the site, this page is updated before the cookie is set in production, and the change is announced in the changelog. The "last reviewed" date at the top of the page reflects the most recent revision.