Wallet Integration

Wallet integration is an essential aspect of dApp development that allows users to securely interact with blockchain-based applications.

EVM Wallet Compatibility​

Any standard EVM wallet works out of the box with Cosmos EVM chains. This includes popular wallets like MetaMask, Rabby, WalletConnect, and any other wallet that supports Ethereum and EVM-compatible chains. No special configuration or custom integration is required - simply add your chain’s RPC endpoint and chain ID to any EVM wallet.

Key Integration Points​

• Standard EVM RPC: Cosmos EVM exposes the standard Ethereum JSON-RPC API, ensuring compatibility with all EVM wallets
• EIP-1559 Support: Full support for EIP-1559 dynamic fee transactions, enabling automatic gas estimation
• Address Format: Uses standard Ethereum addresses (0x format) for EVM transactions
• Transaction Types: Supports all standard Ethereum transaction types including legacy and EIP-1559 transactions

Wallet Support​

Wallet	Type	Notes
MetaMask	EVM	Works out of the box - just add network RPC
Rabby	EVM	Works out of the box - just add network RPC
WalletConnect	EVM	Standard WalletConnect integration works
Keplr	Cosmos + EVM	Supports both Cosmos and Ethereum transaction formats
Leap	Cosmos + EVM	Supports both Cosmos and Ethereum transaction formats
Ledger	Hardware	Compatible via MetaMask or other wallet interfaces

Client Libraries​

For programmatic wallet integration, use standard Ethereum client libraries like ethers.js, web3.js, or viem which are fully compatible with Cosmos EVM chains.

Quick Start​

To add a Cosmos EVM chain to MetaMask or any EVM wallet:

1. Open your wallet and navigate to “Add Network”

2. Enter the following details:

   • Network Name: Your chain name
   • RPC URL: Your chain’s JSON-RPC endpoint (port 8545)
   • Chain ID: Your EVM chain ID (integer)
   • Currency Symbol: Your native token symbol
   • Block Explorer URL: (optional) Your chain’s block explorer

That’s it! Your wallet is now ready to interact with the Cosmos EVM chain.