eth_protocolVersion | Hyperliquid EVM

​

Parameters

​

Response

​

Response structure

• result — The current protocol version as a hexadecimal string representing the supported Ethereum protocol version

​

Protocol version interpretation

• Protocol versions are returned in hexadecimal format with “0x” prefix
• Convert to decimal for human-readable version numbers
• Higher numbers indicate more recent protocol versions

• Use this method to verify client-server protocol compatibility
• Ensure your application supports the returned protocol version
• Check for protocol updates and compatibility requirements

​

Usage example

​

Basic implementation

// Get current protocol version
const getProtocolVersion = async () => {
  const response = await fetch('https://hyperliquid-mainnet.core.chainstack.com/YOUR_ENDPOINT/evm', {
    method: 'POST',
    headers: {
      'Content-Type': 'application/json',
    },
    body: JSON.stringify({
      jsonrpc: '2.0',
      method: 'eth_protocolVersion',
      params: [],
      id: 1
    })
  });
  
  const data = await response.json();
  const versionHex = data.result;
  const versionDecimal = parseInt(versionHex, 16);
  
  return {
    hex: versionHex,
    decimal: versionDecimal
  };
};

// Check protocol compatibility
const checkCompatibility = async (requiredVersion) => {
  try {
    const { decimal: currentVersion } = await getProtocolVersion();
    
    if (currentVersion >= requiredVersion) {
      console.log(`Compatible: Node supports protocol version ${currentVersion}`);
      return true;
    } else {
      console.warn(`Incompatible: Node version ${currentVersion} < required ${requiredVersion}`);
      return false;
    }
  } catch (error) {
    console.error('Error checking protocol version:', error);
    return false;
  }
};

// Usage
checkCompatibility(65).then(isCompatible => {
  if (isCompatible) {
    console.log('Proceeding with application initialization');
  } else {
    console.log('Application may not function properly');
  }
});

​

Example request

curl -X POST \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_protocolVersion","params":[],"id":1}' \
  https://hyperliquid-mainnet.core.chainstack.com/4f8d8f4040bdacd1577bff8058438274/evm

​

Use cases

• Compatibility verification: Ensure client applications are compatible with the node’s protocol version
• Version management: Track protocol versions across different environments and deployments
• Network diagnostics: Diagnose network connectivity and protocol support issues
• Development tools: Build development tools that adapt to different protocol versions
• Client initialization: Initialize client applications with appropriate protocol settings
• Migration planning: Plan migrations and upgrades based on protocol version support
• Integration testing: Test applications against different protocol versions
• API validation: Validate API compatibility and feature support across versions
• Multi-network support: Build applications that work across different EVM networks
• Protocol monitoring: Monitor protocol version changes and network updates
• Smart contract deployment: Ensure smart contracts are compatible with the network protocol
• DApp compatibility: Verify DApp compatibility with the underlying protocol version
• Wallet integration: Ensure wallet applications support the network’s protocol version
• Bridge operations: Validate protocol compatibility for cross-chain bridge operations
• Node management: Monitor and manage node protocol versions in infrastructure
• Debugging tools: Build debugging tools that account for protocol version differences
• Analytics platforms: Track protocol adoption and version distribution across networks
• Testing frameworks: Create testing frameworks that validate protocol compatibility
• Development environments: Set up development environments with appropriate protocol support
• Quality assurance: Implement QA processes that verify protocol version compatibility
• Documentation systems: Generate documentation that accounts for protocol version differences
• Monitoring dashboards: Build monitoring dashboards that track protocol version metrics
• Automated deployments: Implement deployment scripts that verify protocol compatibility
• Security audits: Conduct security audits that account for protocol version vulnerabilities