Cronos RPC Endpoint

Fast, flat-rate Cronos RPC node provider — free tier, no KYC, HTTP & WebSocket.

Cronos is an EVM-compatible Layer 1 built with the Cosmos SDK and a Tendermint-based consensus, backed by Crypto.com. It offers fast deterministic finality, low fees, and IBC interoperability with the broader Cosmos ecosystem.

About Cronos

Cronos mainnet launched in November 2021 as an Ethereum-compatible chain running an Ethermint EVM module on top of the Cosmos SDK. It uses a Tendermint-derived proof-of-authority/proof-of-stake consensus, producing blocks roughly every 5-6 seconds with finality reached at the same cadence.

Because it is built on Cosmos, Cronos connects to other Cosmos chains through the Inter-Blockchain Communication (IBC) protocol while still letting developers deploy Solidity contracts with standard Ethereum tooling. It targets DeFi, GameFi, and consumer applications, aided by its integration with the Crypto.com app.

Common Use Cases on Cronos

• DeFi protocols and DEXes
• GameFi and NFT applications
• Low-fee token transfers and payments
• Cross-chain transfers via IBC
• Crypto.com app integrations

Cronos Ecosystem

Notable projects include VVS Finance, Ferro, Tectonic, and Crypto.com's own DeFi and NFT integrations.

HTTP Endpoint

WebSocket Endpoint

Quick Start: Connect to Cronos

cURL

curl -X POST https://rpc.swiftnodes.io/rpc/cronos?key=YOUR_API_KEY \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_blockNumber","params":[],"id":1}'

ethers.js

import { JsonRpcProvider } from "ethers";

const provider = new JsonRpcProvider(
  "https://rpc.swiftnodes.io/rpc/cronos?key=YOUR_API_KEY"
);

const blockNumber = await provider.getBlockNumber();
console.log("Cronos block:", blockNumber);

viem

import { createPublicClient, http } from "viem";

const client = createPublicClient({
  transport: http("https://rpc.swiftnodes.io/rpc/cronos?key=YOUR_API_KEY"),
});

const blockNumber = await client.getBlockNumber();

web3.py

from web3 import Web3

w3 = Web3(Web3.HTTPProvider("https://rpc.swiftnodes.io/rpc/cronos?key=YOUR_API_KEY"))
print("Cronos block:", w3.eth.block_number)

Add Cronos to MetaMask

Bridging to Cronos

Assets bridge in via the Cronos bridge and third-party routes such as cBridge (Celer) and the IBC protocol for Cosmos-based assets.

Features of SwiftNodes for Cronos

• Multiple load-balanced upstream nodes for high availability
• Health-checked every 60 seconds with automatic failover
• Free tier available — no credit card or KYC required
• Flat-rate monthly pricing with no per-request fees
• HTTP and WebSocket support
• One API key works across all 75+ supported chains, including Cronos

Rate Limits

Frequently Asked Questions: Cronos