Free ZKsync RPC (ZK)

Discover zkSync, a Layer 2 scaling solution for Ethereum using ZK rollups. Build scalable decentralized applications using its RPC gateway.

99.99%

24/7

FREE

RPC Gateway

Connect to ZKsync RPC

Access reliable, enterprise-grade RPC endpoints that power your dApp with ultra-low latency and 99.9% uptime.

Connect to ZKsync Gateway

Make your first RPC call on ZKsync's Blockchain Gateway.

Mainnet

Explorer

JSON-RPC

https://zksync-mainnet.gateway.tatum.io

Testnet

Explorer

JSON-RPC

https://zksync-sepolia.gateway.tatum.io

* Rate limit enabled - perfect for testing and development. For production, we recommend to Upgrade.

Ready for production?

Get 200 requests/second, priority support and advanced blockchain features.

Global Load Balancer

Route to nearest node

Batch RPC Calls

Multiple requests at once

Archive Nodes

Historical blockchain data

Debug & Trace

Advanced debugging

Advanced Analytics

Usage & performance

Bring Your Own RPC

Custom RPC gateways

Upgrade

Get Free API Key

Increase your limit and access all ZKsync features in Tatum Development Platform.

Get API Key How to authenticate

Smart Contract Tools on ZKsync

Deploy, create, and interact with smart contracts on ZKsync.

Accessible to Everyone

No signup. No paywalls. Just RPC that works. Great ideas come from everywhere.

Our Mission

With love by Tatum

Blockchain Data

Indexed ZKsync Data Insights

Complete on-chain data access for ZKsync. Query wallets, tokens, NFTs, and transaction history with lightning-fast APIs - no need to run your own nodes.

Get Token Exchange Rates

Check exchange rates for tokens and fiat on ZKsync.

1 ZK=? USD

Check ZKsync Malicious Address

Verify if an address on ZKsync is flagged as malicious.

0x1a2b...3c4d

Flagged

About ZKsync

The zkSync RPC documentation provides developers with the necessary tools to interact programmatically with zkSync, a Layer 2 scaling solution for Ethereum. zkSync uses zero-knowledge rollups (ZK rollups) to achieve faster transactions and lower fees while maintaining the security of the Ethereum network. The documentation includes API endpoints for querying blockchain data, managing transactions, and deploying smart contracts. Developers can use zkSync to build scalable decentralized applications (dApps) with enhanced performance and lower transaction costs.

FAQ

Frequently Asked Questions

Everything you need to know about ZKsync RPC endpoints

Quick Answer: What is ZKsync RPC?

ZKsync RPC (Remote Procedure Call) is an interface that allows developers to interact with the ZKsync blockchain. It enables you to read data, send transactions, and deploy smart contracts programmatically using standard JSON-RPC methods. Our free tier provides 5 requests per minute with no registration required, perfect for testing and development. For production applications, upgrade to Tatum Premium for 200 requests per second and enterprise-grade reliability.

What is ZKsync RPC?

How do I connect to ZKsync using these RPC endpoints?

Simply copy the RPC endpoint URL from above and configure it in your Web3 library (ethers.js, web3.js), wallet (MetaMask, Trust Wallet), or development tool (Hardhat, Truffle). The endpoint works immediately with no registration required for the free tier.

What are the rate limits for free ZKsync RPC?

Free tier RPC endpoints are limited to 5 requests per minute. This is perfect for testing and development. For production applications, we recommend upgrading to Tatum Premium which offers 200 requests per second with no daily limits.

When should I upgrade to Premium?

Consider upgrading to Premium when you're moving to production, need higher rate limits (200 req/sec), require 99.9% uptime SLA, want access to archive nodes for historical data, or need advanced features like batch RPC calls, debug/trace methods, and priority support.

Is ZKsync RPC free forever?

Yes! Our free tier ZKsync RPC endpoints are free forever with 5 requests per minute. This tier is perfect for learning, testing, and small projects. There are no hidden fees or time limits on the free tier.

What happens if I exceed the free tier rate limit for ZKsync RPC?

If you exceed 5 requests per minute on the free tier ZKsync RPC, you'll receive an HTTP 429 (Too Many Requests) error. This is a standard rate limiting response. To avoid this, you can upgrade to Tatum Premium which offers 200 requests per second with no daily limits, perfect for production applications.

Can I use these ZKsync RPC endpoints with MetaMask?

Yes! You can configure MetaMask to use our ZKsync RPC endpoints. Simply copy the endpoint URL from above, go to MetaMask Settings > Networks > Add Network (or edit existing), and paste the RPC URL. This works with all EVM-compatible blockchains including ZKsync.

Are the ZKsync RPC endpoints secure?

Yes, all our ZKsync RPC endpoints use HTTPS encryption and follow enterprise-grade security practices. They're powered by Tatum's infrastructure which maintains 99.99% uptime and is trusted by thousands of developers worldwide.

What's the difference between ZKsync mainnet and testnet RPC endpoints?

Mainnet endpoints connect to the live ZKsync blockchain where real transactions occur with real assets. Testnet endpoints connect to a separate testing network with free test tokens. Always test your dApp on ZKsync testnet before deploying to mainnet.

How do I troubleshoot ZKsync RPC connection errors?

If you're experiencing connection errors with ZKsync RPC, check: 1) The RPC endpoint URL is correct, 2) You're not exceeding rate limits (5 req/min for free tier), 3) Your network allows HTTPS connections, 4) The ZKsync network is currently operational. For persistent issues, check our status page or contact support.

What's the difference between mainnet and testnet?

Mainnet is the live ZKsync blockchain where real transactions occur with real assets. Testnet is a separate network used for testing and development with free test tokens. Always test your dApp on testnet before deploying to mainnet.

Can I use these endpoints in production?

Free tier endpoints can be used in production for low-traffic applications (under 5 req/min). For production apps with higher traffic, we strongly recommend Tatum Premium for guaranteed uptime, faster rate limits, and enterprise SLA.

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