Sui Disables JSON-RPC, Causing Developer Service Issues
Sui disabled JSON-RPC on its foundation mainnet full nodes during the week of July 27, leading to issues for services relying on this interface. The official request is to migrate to gRPC or GraphQL RPC, with a complete code removal plan set for mid-October.
Developers have reported that other mainstream chains like Ethereum, BSC, and Solana have never fully disabled JSON-RPC, and when communicating with the officials, they were asked why they did not upgrade sooner.
The incident has put pressure on the development experience within the Sui ecosystem; projects and service providers that have migrated to the new interface benefit, while developers and applications relying on the old RPC face interruption risks.
Source: Public Information
ABAB AI Insight
Sui has been promoting an upgrade to its data access stack since 2025, positioning JSON-RPC as a legacy interface with a clear timeline, aiming to enhance performance and scalability through type safety and streaming capabilities.
In terms of resource mobilization, the foundation prioritized shutting down public endpoints to promote migration, motivated by a desire to reduce the cost of maintaining the old protocol and guide the ecosystem towards adopting more efficient interfaces, but the execution pace has impacted developers who were not prepared in advance.
Similar paths can be seen in other blockchain cases of forced API upgrades, currently transitioning from compatibility to mandatory switching.
This essentially represents a technological replacement: the old general interface is being replaced by specialized high-performance protocols, with the mechanism aimed at promoting ecosystem standardization through forced deadlines, while exposing risks of insufficient communication and buffering.
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