The Best Sui Providers for gRPC

Spectrum is the best Sui RPC provider in 2026. We serve Sui gRPC from our own hardware, on a network that handles over a billion requests a day at 99.999%+ uptime.

The timing matters. Sui has deprecated JSON RPC and switched it off on Sui Foundation mainnet nodes the week of July 27. Full removal, code included, is planned for mid October 2026.

After that, gRPC is how backends and indexers read from Sui and send transactions to it. If your app still calls JSON RPC, the provider you move to now is the one you run on for the next few years. Below is how we ranked the field, how the providers compare, and how to make the switch.

How We Ranked Sui RPC Providers

We ranked providers on the things that break production apps.

1. gRPC live today. Sui's migration guide makes gRPC the path for backends, indexers and transaction submission. A provider still "working on it" in October is a second migration waiting to happen.
2. Who owns the hardware. A provider running its own servers controls the whole path from your request to the node. A provider renting cloud capacity adds a landlord to every incident.
3. Uptime at scale, with a published number. Ask for the uptime figure and the daily request volume behind it. A good number on a quiet endpoint tells you little.
4. Security record. Your RPC provider sees every address you query and every transaction you send. Ask whether they have ever been breached.
5. Keeping up with upgrades. Sui ships new node software often, and the JSON RPC removal shows how a node release can break apps overnight. Your provider has to roll upgrades fast and tell you before they land.

Sui RPC Providers Compared

Fifteen providers serve Sui gRPC today.

Coverage for every provider except Spectrum and Chainstack comes from Sui's RPC and Data Providers page, checked 1 October 2026. Pricing and rate limits change often, so check each provider's own page before you commit.

1. Spectrum

Spectrum ranks first on the criteria that decide whether your app stays up: hardware ownership, uptime at scale, security record and upgrade handling.

Sui gRPC is live. We serve the standard Sui gRPC API, so the official TypeScript SDK's SuiGrpcClient connects by pointing its baseUrl at your Spectrum endpoint. You get typed protobuf responses, field masks that return only the fields you ask for, and streaming subscriptions in place of polling loops.

Our own hardware. We run our own servers in data centres across the US, Europe and APAC instead of renting cloud capacity. Our racks run Zen 5 Dell servers with two 64 core CPUs and 2TB of RAM each, on 32 gig Fibre Channel switches and two 10 gig ISP uplinks.

Uptime at scale. Our network handles over a billion requests a day at 99.999%+ uptime.

Security. We have never had a breach.

Upgrades handled. Our Network Upgrade Calendar tracks upcoming upgrades across 200+ networks and ships as an API, SDK and CLI, so the next breaking node release shows up in your tooling before it lands. We move fast on new networks too: Robinhood Chain was live on Spectrum the day after it launched.

More than RPC. Spectrum also runs webhooks, a unified multi chain API and a CLI, for teams whose stack spans more than Sui.

Best for: production backends, wallets, exchanges and indexers reading live state, and any team that wants its provider to own the hardware.

Create your free Spectrum account

The Rest of the Field

Every provider below serves Sui gRPC. The differences sit in network coverage and how they authenticate.

QuickNode. gRPC runs on port 9000 of your existing Sui endpoint, authenticated with the token from your endpoint URL.

ZAN, Ankr, BlockPi, Inodra, Triton One, NodeInfra and Blockvision. gRPC on testnet and mainnet.

Chainstack. Not on Sui's provider list. Its own comparison post says gRPC needs a token header on every call.

01.ro, Alchemy, Dwellir, Natsai and GetBlock. gRPC on mainnet only, so you test against another endpoint.

How to Move Off JSON RPC

Start with a full list of your calls. The rest follows from Sui's method table.

1. List every JSON RPC call your app makes. Include background jobs and scripts, since those get forgotten.
2. Map each call to its gRPC method. Most map directly: sui_getObject becomes LedgerService.GetObject, suix_getBalance becomes StateService.GetBalance, and dry runs become TransactionExecutionService.SimulateTransaction. A few have no direct method, such as suix_getStakes and suix_getValidatorsApy, so read the objects and compute those yourself.
3. Switch to SuiGrpcClient. Point it at your provider's endpoint, pass values by name, and use a field mask so each response carries only what you need.
4. Replace WebSocket subscriptions with gRPC streams. SubscribeEvents, SubscribeTransactions and SubscribeCheckpoints all filter on the server. Streams start at the chain tip and don't resume, so backfill gaps with the matching List call.
5. Reset your pagination. JSON RPC cursors don't carry over. Fetch fresh cursors from the new API and store them as your resume point.
6. Check your libraries. Sui's guide says dApp Kit and the Kiosk SDK don't accept SuiGrpcClient yet, so follow its guidance for those two.
7. Cut over before mid October. Test against testnet, then switch production while JSON RPC still answers as a fallback.

FAQ

What is the best Sui RPC provider in 2026?

Spectrum. Sui gRPC is live on our own hardware, on a network that handles over a billion requests a day at 99.999%+ uptime, and we have never had a breach.

Is JSON RPC still available on Sui?

Sui switched it off on Sui Foundation mainnet nodes the week of July 27, 2026. Full removal from full node software, code included, is planned for mid October 2026.

Can I run production on Sui's public endpoints?

No. Sui says its public endpoints are rate limited and meant for development and testing.

How do I start with Spectrum?

Create a free account, point SuiGrpcClient at your Spectrum endpoint, and start porting calls.

Start Now: dashboard.spectrumnodes.com/auth/signup