SUI launches GraphQL subscriptions on Mainnet
Sui (SUI)
Editor:
Eugene Serbin
cryptobriefing.com reports that SUI has enabled GraphQL subscriptions on its Mainnet, replacing the legacy JSON-RPC system. This upgrade provides developers with a single interface for accessing both historical and live blockchain data. The feature utilizes WebSocket connections via the endpoint wss://sui-mainnet.mystenlabs.com/graphql to stream checkpoints, transaction blocks, and events.
It includes built-in capabilities such as query-aligned filtering, automatic reconnection, and cursor-based backfilling. This launch marks the final phase of the migration away from JSON-RPC, which was fully phased out on Foundation nodes in late July 2026. Subscriptions allow applications to receive updates instantly through persistent connections rather than repeated polling.
Developers can filter data using GraphQL’s native query language, eliminating the need to sort information client-side. The system ensures that disconnected applications can resume from the exact point of disconnection before switching back to the live stream. Previously, accessing historical data and live updates often required different tools or protocols.
Now, both data flows use the same query language and endpoint. This feature complements SUI’s existing gRPC streaming option, which remains better suited for high-throughput, low-level integrations.
How the market reacted
Whalio's own Binance spot order flow for SUI, measured when this story was written up on 22 September 2026. Not the outlet's figures.
SUI is trading at $1.04 with a 1-hour buy ratio of 53.8% and a 4-hour buy ratio of 52.2%. These short-term ratios are higher than the 24-hour buy ratio of 52.5%, indicating that buying pressure is building in the immediate term. The 1-hour volume delta is positive at $385,701, while the 4-hour delta is $703,887. Over the last 24 hours, the volume delta stands at $11,593,504, showing sustained accumulation. CVD closed at $5,408,066 for the period, with net buying occurring in 20 of the last 24 hours.
The latest daily buy ratio of 49.7% sits at the 54th percentile of the last 322 days, against a median of 49.4% - ordinary for this coin.
Was that an ordinary day?
The same Binance spot measurements for SUI, averaged over the days leading up to the story.
The current 24-hour buy ratio of 52.5% is higher than the 7-day average of 49.1%, representing a 3.4 point increase. Trading volume for the day is 3.18 times the weekly average, signaling an unusual level of activity. While the coin has seen a 44.6% price increase over eight days, the 8-day volume delta is negative at -$2,691,934. Net buying occurred on only 2 of the last 7 days, contrasting with the consistent buying seen in the last 24 hours.