The Sui Foundation confirmed on March 24, 2026 that its three-tier data infrastructure is generally available for production use. The new stack replaces JSON-RPC, which has served as Sui's primary data interface since the network launched but was increasingly inadequate for the demands of a maturing DeFi, gaming, and institutional applications ecosystem. The deprecation process began in September and October 2025, making the July 31, 2026 cutoff the final stage of a planned transition rather than a sudden announcement. An earlier working deadline of April 2026 appeared in the documentation before July 31 was confirmed as the hard cutoff. Any application still calling JSON-RPC endpoints after July 31, 2026 will break. The Sui Foundation has characterized that date as a hard cutoff.

What the New Stack Is and Who It Serves

The replacement infrastructure has three layers, each targeting a different class of application.

gRPC is the direct JSON-RPC replacement on full nodes and is designed for applications where speed matters most. DeFi protocols, exchanges, and MEV bots will likely migrate here. It uses Protocol Buffers, a binary serialization format that parses faster and transmits more efficiently than the JSON text format, delivering measurably lower overhead at scale.

GraphQL RPC sits on top of the General-Purpose Indexer, which maintains a relational database of on-chain state. It is aimed at web applications with standard latency requirements, such as wallets and NFT platforms. The main practical advantage is the ability to combine data from multiple tables in a single query rather than chaining sequential calls. The schema remains consistent across checkpoints, which supports more predictable front-end development. It is worth noting that the GraphQL RPC layer and the General-Purpose Indexer originally targeted general availability by December 2025; the March 2026 confirmation reflects a brief slip from that earlier target.

The Archival Store solves a different problem. Sui full nodes prune old checkpoint data as the chain grows, meaning queries for historical state fail silently with NOT_FOUND errors. The Archival Store, backed by Google Bigtable or a compatible backend, exposes the same LedgerService gRPC API as a full node. Applications can fall back to it when a full node returns a NOT_FOUND error, though implementing that fallback behavior requires work on the developer's side. Default retention in the underlying database is approximately four weeks, but operators can configure longer periods.

Managed Providers and Public Endpoints

Teams that do not want to self-host can delegate the entire stack to managed providers. As of late 2025, Dwellir and Quicknode were the first major RPC providers to complete full gRPC support. The March 2026 general availability announcement adds Ankr, BlockPi, and ZAN to the confirmed full-stack provider list, completing the managed provider ecosystem. A developer team in Lagos, Karachi, or anywhere else can now access production-grade infrastructure without operating their own nodes.

The Sui Foundation also runs two public Archival Service endpoints at no cost, with strict rate limits applied. Testnet developers can reach archive.testnet.sui.io; mainnet developers can use archive.mainnet.sui.io. These free endpoints are relevant for academic projects and early-stage teams that cannot budget for managed Bigtable infrastructure, but teams planning production workloads should account for the strict limits before committing to them.

Regional Stakes: Africa at the Center

The deadline has direct consequences for developers in markets where Sui has been actively recruiting talent. SuiHub Lagos, which opened in July 2025 as Sui's fourth global physical hub (joining Dubai, Vietnam, and Athens), runs developer workshops focused on Move, zkLogin, and Walrus, along with developer office hours and demo days. Adeniyi Abiodun, co-founder of Mysten Labs, personally launched a $1.3 million fund to train Nigerian developers in blockchain software development.

Those developers, along with teams in Ghana and Kenya that SuiHub Lagos plans to engage, are now facing the same July 31 deadline as developers anywhere else. All teams need to verify their current setup and confirm their provider supports the new stack.

South Asia also has an active Sui developer community, particularly in India and Pakistan, but no regional hub equivalent to Lagos currently exists. Teams in that region have engaged primarily through conference events, including India Blockchain Week in December 2025 and the forthcoming Unchained Summit in India scheduled for November 2026. Based on available data, the GraphQL RPC layer is likely the most practical migration target for South Asian teams building web-facing dApps, given its compatibility with JavaScript and TypeScript SDKs already common in that developer base. This assessment reflects regional analysis rather than primary sources and should be read accordingly.

Market Context

SUI is trading at roughly $0.95 to $0.98 as of late March 2026, with a market cap of approximately $3.7 to $3.8 billion and a circulating supply of 3.9 billion tokens. The network ranks around 29th by market cap. Total value locked on Sui sits near $578 million, down sharply from a peak of approximately $2.6 billion in late 2025. That decline most likely reflects broader market conditions in Q1 2026 rather than Sui-specific ecosystem deterioration. Developers should also note that 42.9 million SUI tokens are scheduled to unlock in April 2026, an additional supply-side factor in the near term.

On the network activity side, daily active addresses are up 83% year over year, on-chain transactions have grown 77.5%, and network fee revenue has risen 268%. The reference periods for those three metrics were not specified in available data and may not correspond to the same interval as the developer growth figure, which is explicitly for 2024: developer growth that year came in at 219% year over year. Monthly active wallets now exceed 600,000.

What Comes Next

Mysten Labs has framed this infrastructure completion as a prerequisite for the next layer of applications it wants to support in 2026, including privacy features for institutional use, deeper DeFi tooling, and infrastructure for autonomous systems such as AI agents and robotics. For developers, the immediate task is simpler: audit which endpoints your application calls, confirm your provider supports gRPC or GraphQL RPC, and start the migration now. At 129 days out, the window is workable. At 30 days out, it will not be.