Sui RPC/API matrix

:::warning JSON-RPC is deprecated The Sui API reference marks JSON-RPC as deprecated and directs operators to migrate by July 2026. Treat every new integration as gRPC or GraphQL RPC first. :::

Interface	Status	Best For	Transport	Production Notes
gRPC	Recommended	Backend services, indexers, low-latency object lookup, transaction submission, simulation, and streaming subscriptions	HTTP/2	Full node gRPC exposes LedgerService, StateService, TransactionExecutionService, and SubscriptionService in the Full Node protocol. Keep it private or gateway-protected.
GraphQL RPC	Recommended	Frontend reads, analytics, flexible object/address/transaction query, and historical exploration	HTTP	The GraphQL RPC guide fits query composition and pagination; publish through HTTPS, caching, and rate limits.
JSON-RPC	Deprecated	Legacy clients during migration only	HTTP; migration deadline 2026-07	The Sui API reference documents deprecation. Freeze new usage and map methods to gRPC or GraphQL before July 2026.

Use /developer/client-patterns for retry and timeout defaults, and /developer/rate-limiting for shared public endpoint policy.