Sui Mainnet RPC Endpoints & API Access | OnFinality

Sui Mainnet RPC Endpoints

Sui is a Layer 1 blockchain designed for fast, secure, and scalable digital asset ownership. Its object-centric data model enables parallel transaction execution, making it ideal for high-throughput applications like DeFi, gaming, and social platforms. Developers building on Sui need reliable RPC endpoints to interact with the network—reading on-chain data, submitting transactions, and powering backend services.

OnFinality provides managed Sui Mainnet RPC endpoints, giving you authenticated API access without the overhead of running your own full node. Whether you're building a wallet, a dApp, or an analytics tool, OnFinality's infrastructure is designed for production workloads.

Why Use OnFinality for Sui RPC?

• Managed API endpoints: No need to sync or maintain a Sui full node. Get started with a few clicks.
• Observability: Monitor request volume, error rates, and usage limits through the OnFinality dashboard.
• Scalability: Start with a shared API plan and upgrade to higher capacity as your project grows.
• Global regions: Endpoints available in N. Virginia and Hong Kong for low-latency access.

Sui Mainnet RPC Endpoint Details

• Network: Sui Mainnet
• Protocol: JSON-RPC over HTTP
• Transport: HTTP
• Authentication: API key required (free tier available)
• Common use cases: dApps, wallets, DeFi products, analytics tools, games, bots, and backend services

How to Connect

1. Create or sign in to your OnFinality account.
2. Select Sui Mainnet from the supported networks list.
3. Create an API endpoint and copy your unique URL.
4. Use the endpoint in your application to make RPC calls (e.g., suix_getAllBalances, suix_getOwnedObjects).
5. Monitor usage and adjust your plan as needed.

Production-Ready Infrastructure

OnFinality's Sui RPC endpoints are suitable for production applications. With authenticated access, you get stable rate limits, request analytics, and a clear path to higher-capacity plans. For teams with demanding workloads, dedicated node options are available.

Sui RPC Methods

Sui exposes a rich set of JSON-RPC methods organized into categories:

• Coin Query API: suix_getAllBalances, suix_getCoins, suix_getBalance
• Extended API: suix_getOwnedObjects, suix_getDynamicFields, suix_queryTransactionBlocks
• Governance Read API: suix_getValidators, suix_getStakes
• Move Utils: suix_getNormalizedMoveModules, suix_getMoveFunctionArgTypes

Refer to the Sui API Reference for full documentation.

Get Started

Ready to build on Sui? OnFinality offers a free tier to get you started. Sign up today and connect to Sui Mainnet in minutes.