Mainnet
Mainnet JSON-RPC
https://kucoin-mainnet.gateway.tatum.io
Free Kucoin RPC (KCS)
Discover Kucoin Chain, an EVM-compatible blockchain for decentralized finance. Build scalable dApps using the RPC gateway and tools.
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FREE
RPC Gateway
Connect to Kucoin RPC
Access reliable, enterprise-grade RPC endpoints that power your dApp with ultra-low latency and 99.9% uptime.
Connect to Kucoin Gateway
Make your first RPC call on Kucoin's Blockchain Gateway.
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
Get Free API Key
Increase your limit and access all Kucoin features in Tatum Development Platform.
Estimate Gas on Kucoin
Calculate the optimal gas fee for any transaction on Kucoin.
Smart Contract Tools on Kucoin
Deploy, create, and interact with smart contracts on Kucoin.
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 Kucoin Data Insights
Complete on-chain data access for Kucoin. Query wallets, tokens, NFTs, and transaction history with lightning-fast APIs - no need to run your own nodes.
About Kucoin
The Kucoin RPC documentation provides developers with a guide to interact with Kucoin’s blockchain network. Kucoin Chain is an EVM-compatible blockchain designed for decentralized finance (DeFi) and asset management. Through the RPC gateway, developers can query blockchain data, submit transactions, and manage smart contracts efficiently. Kucoin’s proof-of-stake (PoS) consensus mechanism ensures low fees and fast transactions, making it ideal for building scalable decentralized applications (dApps).
FAQ
Frequently Asked Questions
Everything you need to know about Kucoin RPC endpoints
What is Kucoin RPC?
Kucoin RPC (Remote Procedure Call) is an interface that allows developers to interact with the Kucoin blockchain. It enables you to read data, send transactions, and deploy smart contracts programmatically using standard JSON-RPC methods.
How do I connect to Kucoin 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 Kucoin 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.
Is Kucoin RPC free forever?
Yes! Our free tier Kucoin 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's the difference between mainnet and testnet?
Mainnet is the live Kucoin 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.