Sui has deployed GraphQL Subscriptions on Mainnet and Testnet, giving developers a new way to receive blockchain data as activity occurs instead of repeatedly polling for changes. Applications can now stream checkpoints, transactions and events through the same GraphQL interface used for historical queries, extending Sui’s production data stack with a higher-level real-time option.
According to the official Sui Foundation announcement, transaction and event subscriptions support filters aligned with existing GraphQL queries, while most fields exposed through the Query schema are also available to subscriptions. Developers can therefore use similar query structures for both historical lookups and live activity, reducing the need to maintain separate data-access patterns. The rollout expands on Sui’s earlier real-time GraphQL infrastructure coverage.
Subscriptions Can Catch Up Before Going Live
A key feature is that subscriptions do not have to begin at the current chain state. Developers can start from an earlier cursor, retrieve matching transactions or events up to the present and then continue receiving new activity. The result is a continuous historical-to-live stream rather than a hard switch between separate retrieval systems. If a client disconnects, it can reconnect using its last processed cursor, backfill missed records and resume live delivery.
Sui says the service also recovers gaps if its own upstream checkpoint connection is interrupted, helping maintain an ordered feed for applications. That model can support wallets displaying payments, trading interfaces refreshing positions, monitoring services detecting selected activity and automated systems responding to on-chain events. AI agents are one potential use case rather than the exclusive purpose of the upgrade, fitting into Sui’s broader work on blockchain infrastructure for agentic commerce and applications such as AI-native trading infrastructure on Sui.
GraphQL Subscriptions can also simplify targeted indexing. A team can subscribe only to transactions or events relevant to its contracts and write those records into its own database or processing pipeline. This provides a lighter alternative for application-specific indexing, but it does not replace Sui’s Custom Indexer Framework, which remains intended for more specialized pipelines with dedicated storage and processing requirements.
GraphQL and gRPC Serve Different Workloads
The new subscription layer does not replace Sui’s existing gRPC infrastructure. Sui continues to position gRPC as the lower-level, strongly typed interface for high-performance backends, exchanges and large indexing systems, while GraphQL gives application developers more flexibility to select specific fields and related data using familiar query structures.
The two interfaces are also architecturally connected. For live activity, the GraphQL service consumes Sui’s gRPC checkpoint stream. Historical catch-up and data resolution use the gRPC Ledger Service, which can connect to archival infrastructure when deeper chain history is required. GraphQL Subscriptions therefore sit on top of Sui’s existing data stack rather than operating as an independent streaming system. That infrastructure can support increasingly complex applications as Sui expands into areas including regulated digital-securities infrastructure.
GraphQL RPC and Sui’s General-purpose Indexer entered public beta in September 2025 and became generally available for production workloads in March 2026. Real-time subscriptions had been identified as a future capability during that earlier rollout. Their Mainnet availability now completes that planned addition, leaving developer adoption as the next measurable milestone, particularly among wallets, trading applications, analytics platforms and custom indexers seeking to replace repeated polling with filtered, resumable streams.