Unichain RPC Endpoints & API

Unichain RPC Endpoints on OnFinality

Unichain is a DeFi-native Ethereum Layer 2 rollup built on the OP Stack, designed to be the home for liquidity across chains. Powered by Uniswap, it offers 1-second block times (with 200ms preconfirmations via Flashblocks), reduced transaction costs, and native cross-chain interoperability as part of the Superchain. Developers building DeFi dApps, wallets, trading bots, analytics tools, or backend services on Unichain need reliable RPC access to read blockchain data, submit transactions, and interact with smart contracts.

OnFinality provides managed Unichain RPC endpoints, giving you production-ready access without the overhead of running your own node. Our infrastructure supports EVM JSON-RPC over HTTP and WebSocket, with archive and trace capabilities available depending on your plan.

What is a Unichain RPC Endpoint?

A Unichain RPC endpoint is a network URL that your application uses to communicate with the Unichain blockchain. It exposes standard Ethereum JSON-RPC methods (e.g., eth_blockNumber, eth_call, eth_sendRawTransaction) as well as OP-Stack-specific methods for rollup state and synchronization. Whether you're querying balances, deploying contracts, or monitoring mempool activity, an RPC endpoint is the gateway to the network.

Why Use OnFinality for Unichain RPC?

• Production-ready infrastructure: Authenticated endpoints with clear usage limits and request analytics.
• Archive and trace support: Access historical state and debug transactions for advanced use cases.
• Scalable plans: From shared API endpoints to higher-capacity options, with a path to dedicated nodes where supported.
• Global availability: Endpoints served through OnFinality's distributed infrastructure.

How to Connect to Unichain with OnFinality

1. Create or sign in to your OnFinality account.
2. Select Unichain from the supported networks list.
3. Create an API endpoint (or deploy a dedicated node if supported).
4. Test your endpoint using eth_blockNumber.
5. Monitor request usage, errors, and limits before moving critical traffic.

Key Facts About Unichain RPC on OnFinality

• Network: Mainnet
• Chain ID: 130
• Protocol: EVM JSON-RPC
• Transport: HTTP and WebSocket
• Advanced access: Archive and trace (plan-dependent)
• Common use cases: Production dApps, DeFi products, wallets, analytics tools, games, bots, and backend services.

When to Use Private Unichain RPC vs Public RPC

Public Unichain RPC endpoints (like those listed on ChainList) are fine for lightweight testing, but they often have no rate limit guarantees, limited observability, and may be shared by many anonymous users. For team projects, backend services, or higher-volume workloads, authenticated OnFinality endpoints provide stable access, usage analytics, and a clear scaling path.

Get Started with Unichain RPC

Ready to build on Unichain? Create an OnFinality account and get your Unichain RPC endpoint in minutes. No node management required.

Unichain RPC and developer resources

Most teams looking for Unichain RPC need to answer a practical question: can this endpoint support the app, wallet, analytics job, or backend service they are building?

Best fit: mainnet production workflows for trading systems, analytics, and production apps.

What builders usually check first:

• Read current chain state for apps, dashboards, wallets, and backend services.
• Submit transactions and monitor confirmations from Ethereum-compatible tools.
• Query logs, receipts, and historical state when indexers or analytics pipelines need more than the latest block.
• Debug contract behaviour with trace data where the network supports it.

Supported capability notes:

• Authenticated Unichain RPC/API access for trading systems, analytics, and production apps.
• HTTP plus WebSocket connectivity for app, backend, and integration workflows.
• Historical data access for analytics, audits, and state lookups.
• Debug-friendly trace access for transaction analysis and incident review.

Decision notes:

• Environment: mainnet. Protocol family: EVM JSON-RPC.
• HTTP plus WebSocket connectivity is listed for supported app and backend workflows.
• Archive support is available for historical state or older chain-data queries.
• Trace support is available for transaction debugging and execution analysis.

A quick connection check usually starts with eth_blockNumber, then moves into the exact methods your wallet, dashboard, bot, indexer, or backend service needs.

Planning the next step:

• Shared RPC is a practical starting point for integration, prototypes, dashboards, and many app backends.
• If your product becomes traffic-heavy or operationally sensitive, review the available upgrade path before relying on a single access pattern.

Next steps:

• Create or manage RPC endpoints
• Review RPC pricing
• Read the Unichain RPC guide