eth_chainId - Mantle RPC Method
Get the chain ID for Mantle. Essential for transaction signing and network verification.
Returns the chain ID used for transaction signing on Mantle.
Why Mantle? Build on the world's largest ZK rollup by TVL with $2.5B+ secured and deep Bybit integration with near-instant ZK finality via OP Succinct, $6.2B treasury backing, mETH liquid staking, and 25% Bybit trading fee discounts.
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
Request Parameters
This method accepts no parameters.
Response Body
Chain ID in hexadecimal
Code Examples
curl -X POST https://api-mantle-mainnet.n.dwellir.com/YOUR_API_KEY \
-H "Content-Type: application/json" \
-d '{
"jsonrpc": "2.0",
"method": "eth_chainId",
"params": [],
"id": 1
}'Related Methods
net_version- Get network versioneth_syncing- Check sync status
debug_traceTransaction
Trace a transaction execution on Mantle. Requires archive node for debugging liquid staking (mETH $1.87B TVL), institutional DeFi via Bybit, and yield optimization strategies.
eth_syncing
Check the sync status of your Mantle node. Returns sync progress or false when fully synced — essential for node health monitoring and dApp reliability.