What does claude.ai track?
claude.ai loaded no advertising or analytics trackers before consent.
Scanned October 2, 2026 from Germany, loading claude.ai/login once and clicking nothing. How we scan
- Tracking companies
- 0
- Tracking cookies
- 0
- Third-party hosts
- 9
- Cookies in total
- 10
Consent banner
No known consent management platform was detected on the page.
Companies contacted before consent
2 of the 3 companies it contacted before consent were functional companies.
None.
Other third parties (content delivery, consent, functional, unclassified)
Cookies set before consent
| Cookie | Purpose | Set by | Lasts |
|---|---|---|---|
| __ssid | Unclassified | claude.ai | 13 months |
| activitySessionId | Unclassified | claude.ai | 1 day |
| anthropic-device-id | Unclassified | claude.ai | 10 months |
| CH-prefers-color-scheme | Unclassified | claude.ai | 12 months |
| ion-vk | Unclassified | claude.ai | Session |
| __cf_bm | Functional | hcaptcha.com (third party) | Under a day |
| __cf_bm | Functional | claude.ai | Under a day |
| _cfuvid | Functional | claude.ai | Session |
| cf_clearance | Functional | claude.ai | 12 months |
| g_state | Functional | claude.ai | 6 months |
The page also wrote 5 keys to local storage, which works like a cookie but isn't sent with requests.
Understanding this page
- How to see which cookies and trackers a website loads
A hands-on walkthrough for checking what a site sets before you've clicked anything, using Chrome and Firefox's built-in tools, plus how CookieTosser automates the same check every month.
- What counts as valid cookie consent in the EU
The rules that actually govern cookie banners — the ePrivacy Directive, the GDPR consent standard, the Planet49 ruling, the strictly-necessary exemption, and what "reject" has to offer compared with "accept.
- Consent management platforms explained
What a CMP banner is actually doing behind the scenes, how the IAB's TCF standard and Google's Consent Mode v2 fit in, and why a banner being present is no guarantee that nothing loads before you answer it.