KeyBridge privacy policy
Last updated: 11 October 2026
KeyBridge is a browser extension that, when you ask it to, finds an access key that belongs to you on a website you're signed in to and hands it to an app you choose. How it works, including the recipe format: keybridge.kuld.dev.
In short
- KeyBridge has no servers of its own and collects nothing about you.
- Keys are found and handled on your device. A key leaves your browser only when you click a button that sends it to a destination named in the recipe (for example "Open in My app"), or when you copy it yourself.
- No analytics, no tracking, no advertising, and no selling or sharing of data.
What KeyBridge handles
| Data | When | Where it goes |
|---|---|---|
| The access key or token you grab (authentication information) | Only after you press Grab key on a supported site | Shown to you in the extension popup. It is sent on only when you choose a destination, in the way described below. |
| Recipes you add, and your settings | When you add or change them | Stored in your browser's extension storage (chrome.storage.local). Never uploaded. |
Network requests KeyBridge makes
- Key check: if a recipe defines a check, KeyBridge asks that same service whether the key works, usually with a single request to that service. No cookies are sent.
- Handing the key over: when you click a destination button, KeyBridge opens the app's address
with the key, usually in the URL fragment (
#…), which browsers don't send to servers. The QR code contains the same address and is made on your device. - Recipe library: when you press Load on the Recipes page, KeyBridge downloads
library.jsonfromkeybridge.kuld.dev, which is hosted on Cloudflare. Cloudflare can see your IP address, as with any web request (Cloudflare privacy policy). The developer keeps no logs of these requests.
Storage and retention
Grabbed keys are kept only in the open popup. Recipes and settings stay in your browser until you remove them or uninstall KeyBridge. The developer receives none of this data.
Permissions
activeTabandscripting: read the key from the tab you are on, only when you click KeyBridge and press Grab key.storage: save your recipes and settings on your device.
Limited Use
KeyBridge's use of information complies with the Chrome Web Store User Data Policy, including the Limited Use requirements. Data is used only to provide the extension's single purpose. It is not transferred to third parties, not used for advertising, and not used to determine creditworthiness or for lending.
Contact
Questions or concerns: use the developer contact email on KeyBridge's Chrome Web Store listing.