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The Chainstack Sui endpoint serves both JSON-RPC and gRPC on the same node, so you can move off JSON-RPC without re-syncing or switching providers. Sui Foundation’s public endpoints no longer serve JSON-RPC, and Sui removes JSON-RPC from the full node code in mid-October 2026 — see Migrate Sui from JSON-RPC to gRPC and GraphQL. Keep calling JSON-RPC while you port your code, then move each call to gRPC on the same endpoint. Sui Mainnet Global Nodes also serve GraphQL for filtered queries — see Sui GraphQL endpoint.

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What you get

  • One node, both interfaces — JSON-RPC over HTTPS and native gRPC over HTTP/2, from a single Chainstack Sui node.
  • Deep checkpoint retention — tens of millions of checkpoints of history for point lookups and backfills.
  • Server reflection enabled on gRPC — explore services and call methods with grpcurl, no proto compilation needed.
  • x-token authentication on gRPC; auth token or basic auth on JSON-RPC.

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Endpoints

Find your endpoint and credentials on Chainstack — see View node access and credentials. Copy the full HTTPS endpoint (shown below as YOUR_CHAINSTACK_ENDPOINT) — it already carries your auth token. Testnet gRPC is sui-testnet.core.chainstack.com:443. The auth token and x-token are the node’s access credentials, not your Chainstack platform API key. For every authentication option, see Authentication methods available on Chainstack.

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Checkpoint retention

The Chainstack Sui node holds a window of checkpoints from lowestAvailableCheckpoint to the tip, not the full ledger from genesis. GetServiceInfo reports both ends of the window — the tip (checkpointHeight) and the oldest checkpoint the node holds (lowestAvailableCheckpoint):
In this response from Sep 27, 2026, the node held checkpoints 237,661,232 through 327,352,270 — about 89.7M checkpoints. lowestAvailableCheckpointObjects is the matching floor for historical object versions. The floor can change, so read lowestAvailableCheckpoint at runtime instead of hard-coding it. How the window applies to each interface:
  • gRPC — checkpoints, transactions, and object versions older than the window return NotFound.
  • GraphQL — point lookups share this floor, and filtered transaction and event queries keep a shorter window. serviceConfig.availableRange reports each window — see How far back GraphQL history goes.
  • JSON-RPC — object versions older than the window return VersionNotFound. On Mainnet, JSON-RPC also resolves older checkpoint and transaction lookups through the implicit archival fallback built into Sui’s JSON-RPC, which Sui’s deprecation timeline disconnects at the end of September 2026. Do not build on JSON-RPC reads below lowestAvailableCheckpoint.
For data older than the window, query an archival service — see Sui’s Archival Store and Service.

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Verify your endpoint

The list output shows the node’s sui.rpc.v2 services — Sui tooling describes what each one is for.
The official Sui TypeScript SDK (@mysten/sui) works here over both its default gRPC-Web transport and a native gRPC transport — see the setup in Sui tooling. gRPC-Web is served over HTTPS on Mainnet and Testnet, so browser apps can use the SDK directly, no proxy required.

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Next steps

Last modified on September 29, 2026