Hyperliquid’s testnet has launched the ‘Stars’ feature, supporting whitelisted trading for HIP-3 DEX addresses.

Hyperliquid’s testnet recently rolled out a new feature dubbed "Stars". This feature introduces an optional transaction address whitelist mechanism for the HIP-3 DEX, enabling deployers to restrict opening or adding positions exclusively to whitelisted addresses. Currently, the testnet whitelist has a cap of 10,000 addresses; unauthorized addresses can still deposit funds into accounts and submit only position reduction orders to close or cut existing positions. Community analysts believe this feature is set to expand the HIP-3 DEX’s use cases. For instance, tokenized stocks, real-world assets (RWAs), institutional indices, and other regulated products can use the address whitelist to open trading only to users who have completed KYC or meet eligibility requirements. New markets can also be tested first with market makers, partners, or community members, reducing risks of spam trading, wash trading, or malicious manipulation in early market stages. The design allowing non-whitelisted users to continue reducing positions also prevents users from being unable to exit holdings due to permission limits. Notably, the "Stars" feature does not change Hyperliquid’s base layer permissionless nature—it adds an optional access control function that developers can enable or disable as needed. This means scenarios like DAOs, trading clubs, private funds, or partner-exclusive markets can build closed trading markets with access mechanisms while retaining Hyperliquid’s advantages in matching engines and settlement layers. The feature remains in the testnet phase, and the official has not announced its specific use cases. Future applications will need to be confirmed after the mainnet launch and further developer documentation is released.