Quickstart

Open Settings

Navigate to Cursor → Settings → Cursor Settings → MCP

Cursor → Settings → Cursor Settings → MCP

Configure Server

Click “Add new Global MCP server” and add this configuration to mcp.json:

{
  "mcpServers": {
    "sei": {
      "command": "npx",
      "args": ["-y", "@sei-js/mcp-server"]
    }
  }
}

Restart

Restart Cursor to activate the MCP server. You’ll see a notification when it’s ready.

Verification

After setup, verify the server is working by asking your AI assistant:

Test Connection

Ask: “What Sei tools are available?”You should see a list of available blockchain tools.

Test Read Operations

Ask: “What’s the latest block on Sei?”This tests basic blockchain connectivity.

Test Wallet (Optional)

If you configured wallet access (see environment variables for setup):Ask: “What’s my wallet address?”This confirms wallet tools are enabled.