> ## Documentation Index
> Fetch the complete documentation index at: https://goldrush.dev/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Hyperliquid HIP-4 Outcomes, Web App Snapshots, and Builder-Aware Streams

*Published June 19, 2026*

![Hyperliquid HIP-4 Outcomes, Web App Snapshots, and Builder-Aware Streams](https://www.datocms-assets.com/86369/1781902693-goldrush-changelog-post-jun19.jpg)

GoldRush has added three new types to the Hyperliquid Info API and two new GoldRush-native streams to the Hyperliquid WebSocket API.

On the Info API (`POST https://hypercore.goldrushdata.com/info`):

* `settledOutcome` - resolution details for a settled HIP-4 binary outcome market on HyperCore: the resolved side, resolution price, and settlement timestamp.
* `webData2` - the composite payload the Hyperliquid web frontend loads for a wallet on page open, combining perp clearinghouse state, spot balances, open orders with trigger metadata, and recent fills in one round-trip.
* `userTwapSliceFillsByTime` - a wallet’s TWAP slice fills bounded by a `[startTime, endTime)` window. Served from GoldRush’s dedicated HyperCore historical store, so windows past Hyperliquid’s 10,000-fill retention still return data.

On the WebSocket API (`wss://hypercore.goldrushdata.com/ws`), two new streams with no public Hyperliquid equivalent:

* `allFills` - every fill on HyperCore as it executes, batched per block as `[address, fill]` tuples, with optional coin and aggregateByTime filters.
* `builderFills` - every fill routed through one or more builder addresses, with the matched `builder` and `builderFee` on each entry.

[Learn more](https://goldrush.dev/docs/goldrush-hyperliquid/overview)