Your trades stay in your browser.
Papurrr Trade collects no personal data. Papurrr has no server, no user accounts, no analytics and no ads. Nothing you do in Papurrr gets sent to us.
Data stored on your device
Papurrr saves the following in your own browser so your paper account survives a page reload:
- Your paper balance, positions, open orders, fills, funding payments and trade history.
- Your settings: fees, default leverage, unified account mode and debug logging.
- Whether paper mode is on or off.
Trading data lives in local storage for app.hyperliquid.xyz. The on/off switch lives in Chrome's extension storage. None of this leaves your device. Uninstalling Papurrr or clearing site data for app.hyperliquid.xyz deletes the data.
Network requests
Papurrr requests public market data from api.hyperliquid.xyz: prices, order books and funding rates. The Hyperliquid app loads the same public data. These requests carry no personal information from Papurrr.
While paper mode is on, Papurrr blocks every request from app.hyperliquid.xyz to Hyperliquid's order endpoint, api.hyperliquid.xyz/exchange. Paper orders never reach Hyperliquid.
Wallets and signatures
- Papurrr never reads, stores or asks for private keys or seed phrases.
- Papurrr never asks your wallet to sign anything and never sends a transaction.
- When Hyperliquid's own interface asks you to sign "Enable Trading", Papurrr answers the request inside your browser. The signature never gets submitted to Hyperliquid.
- Your public wallet address goes only to Hyperliquid, the venue the page already talks to. See Referral checks below. Papurrr stores no record of the address.
Debug reports
The popup offers a Copy debug report button. The report goes to your clipboard only. Papurrr sends the report nowhere. If you choose to share the report with us for support, the report contains your paper orders, settings and samples of Hyperliquid market data the page received. The report holds no private keys.
Referral checks
Papurrr carries a Hyperliquid referral code. To decide whether to show the one-time prompt about creating an account, Papurrr asks Hyperliquid's public API whether the connected wallet already has a referrer and any trading volume. The request goes to Hyperliquid, the same venue the page already talks to. Papurrr sends the address nowhere else and keeps no record of the answer beyond the dismissal flag in your browser.
Permissions
| Permission | Why Papurrr needs the permission |
|---|---|
| storage | Remembers whether paper mode is on. |
| declarativeNetRequest | Blocks real order requests to Hyperliquid while paper mode is on. |
| app.hyperliquid.xyz | Runs the paper trading engine on Hyperliquid's trading page. |
| api.hyperliquid.xyz | Reads public prices, order books and funding rates. |
Sharing and sale of data
Papurrr collects no user data, so Papurrr has nothing to sell, share or transfer. Papurrr uses no third-party analytics, tracking or advertising services.
Website
papurrrtrade.xyz is a static site. The site sets no cookies and runs no analytics. Our web host keeps standard server logs, such as IP address and request time, for security. Fonts load from Google Fonts, which receives your IP address under Google's own privacy policy.
Children
Papurrr is not directed at children under 13 and collects no data from anyone.
Changes
If this policy changes, we update this page and the effective date above. Material changes also appear in the changelog.
Contact
Questions about privacy: [email protected]