eth_chainId - Moonbase RPC Method
Get the chain ID for Moonbase Alpha. Essential for transaction signing and network verification.
Returns the chain ID used for transaction signing on Moonbase Alpha.
Why Moonbase? Build on the Moonbeam testnet for risk-free EVM dApp development and deployment testing with free testnet tokens, full EVM compatibility, XCM testing capabilities, and identical feature set to Moonbeam mainnet.
Use Cases
The eth_chainId method is essential for:
- Transaction signing - Ensure transactions are signed for the correct network
- Network verification - Confirm connection to the expected chain
- Multi-chain apps - Handle different networks programmatically
- Wallet integration - Validate network before transactions
Code Examples
Related Methods
net_version- Get network versioneth_syncing- Check sync status
eth_newPendingTransactionFilter
Create a filter for pending transaction notifications on Moonbase Alpha. Essential for mempool monitoring, transaction tracking, and MEV opportunity detection for EVM dApp testing, XCM integration validation, and pre-mainnet deployment verification.
eth_syncing
Check the sync status of your Moonbase Alpha node. Returns sync progress or false when fully synced — essential for node health monitoring and dApp reliability.