🎛️JSON-RPC API Overview

Explore the detailed guide to the Cronos zkEVM JSON-RPC API, providing Ethereum integration and advanced Layer 2 features tailored for developers.

Overview

Welcome to Cronos zkEVM JSON-RPC API reference documentation. This page provides a comprehensive overview of our API capabilities and key information. We support the standard Ethereum JSON-RPC API while also offering Layer 2-specific features to enhance functionality.

To ensure a seamless experience, we impose rate limits on both JSON-RPC and WebSocket APIs. Rate limits will change over time.

Mainnet

Network Name: Cronos zkEVM Mainnet
RPC URL: https://mainnet.zkevm.cronos.org/
Chain ID: 388
Currency Symbol: zkCRO
Block Explorer URL: https://explorer.zkevm.cronos.org/
WebSocket (rate limited): wss://ws.zkevm.cronos.org

Testnet

Network Name: Cronos zkEVM Testnet
RPC URL: https://testnet.zkevm.cronos.org
Chain ID: 240
Currency Symbol: zkTCRO
Block Explorer URL: https://explorer.zkevm.cronos.org/testnet/
WebSocket (rate limited): wss://ws.testnet.zkevm.cronos.org

Commercial infrastructure providers

Getblock:
- Visit Getblock to obtain your API key

API Collections

Explore our curated API endpoint collections to meet a range of needs from seamless Ethereum integrations to advanced ZK integrations. Unlock the full potential of Cronos zkEVM to elevate your dApps. Discover, integrate, and innovate with our powerful API offerings.