How to add the Linea network to MetaMask? (ConsenSys L2)

Understanding Linea Network Integration

1. Linea is a Layer 2 scaling solution developed by ConsenSys, designed to enhance Ethereum’s throughput while maintaining full EVM compatibility and security guarantees through zero-knowledge proofs.

2. Adding Linea to MetaMask requires manual configuration of RPC endpoints, chain ID, currency symbol, and block explorer URL — no automatic network detection is available at launch.

3. The official Linea mainnet chain ID is 59144, and its native currency remains ETH, with no separate token issued for gas fees.

4. Users must verify the correctness of each parameter before submission, as incorrect values may result in failed transactions or asset misdirection.

5. Linea supports both standard Ethereum accounts and smart contract wallets, but wallet interactions must align with its zkEVM implementation details.

Step-by-Step Manual Configuration

1. Open MetaMask and click the network selector dropdown located in the top-left corner of the interface.

2. Select “Add Network” and then choose “Add a network manually” from the options presented.

3. Enter https://rpc.linea.build as the New RPC URL — this is the official public endpoint maintained by ConsenSys.

4. Input 59144 as the Chain ID, ensuring no leading zeros or formatting errors.

5. Set the Currency Symbol to ETH and the Block Explorer URL to https://lineascan.build.

Verifying Successful Connection

1. After saving the network, MetaMask should display “Linea Mainnet” in the network selector dropdown.

2. Navigate to the account balance section — ETH balances held on Ethereum mainnet will not appear automatically; only assets bridged to Linea will be visible.

3. Attempting to send a test transaction to a known Linea address confirms functional connectivity and correct gas estimation.

4. Check transaction status using https://lineascan.build to validate on-chain confirmation and block inclusion.

5. MetaMask may show slightly delayed balance updates after bridging — refreshing the page or toggling networks can force synchronization.

Common Bridging Considerations

1. Assets must be transferred via the official Linea Bridge at https://bridge.linea.build — third-party bridges are not endorsed and carry operational risks.

2. ETH bridging typically completes within two minutes, though delays may occur during peak network congestion on Ethereum mainnet.

3. ERC-20 tokens require individual approval per contract address before bridging — no batch approval functionality is supported.

4. Gas fees on Linea are denominated in ETH and remain significantly lower than Ethereum mainnet, averaging under $0.01 per simple transfer.

5. Wallets using hardware signers like Ledger or Trezor must ensure firmware and app versions support EIP-1559 and zkEVM-compatible signing flows.

Frequently Asked Questions

Q: Can I use the same seed phrase for Linea that I use for Ethereum mainnet?A: Yes. Linea uses the same derivation path and cryptographic standards as Ethereum, so your existing seed phrase works without modification.

Q: Why does my ETH balance show zero after adding Linea to MetaMask?A: Linea operates as an independent execution layer. ETH must be explicitly bridged from Ethereum mainnet to appear in your Linea account.

Q: Is MetaMask Mobile compatible with Linea?A: Yes. MetaMask Mobile version 11.12.0 and later fully support Linea mainnet configuration and transaction signing.

Q: Do I need to change my MetaMask settings to interact with Linea dApps?A: No. Once configured, dApps detecting MetaMask will auto-switch to Linea when visiting domains associated with the network, provided they implement proper chain detection logic.