Sign EVM Messages with MetaMask Connect

When to use

Use this skill when:

• Signing a plaintext message with personal_sign for authentication or verification
• Signing structured EIP-712 typed data with eth_signTypedData_v4 for permits, orders, or typed messages
• Using the connectAndSign shortcut to connect and sign in a single user approval
• Handling signature errors and user rejections

Workflow

Step 1: Get the provider and connected account

Ensure the client is connected before requesting a signature:

import { createEVMClient, getInfuraRpcUrls } from '@metamask/connect-evm';