[Smart Accounts Kit] Add Embedded Wallets guide

[AyushBherwani1998]

Description

• Adds guide for using MetaMask Embedded Wallets as a signer

Issue(s) fixed

Part of #2424

Preview

Checklist

• If this PR updates or adds documentation content that changes or adds technical meaning, it has received an approval from an engineer or DevRel from the relevant team.
• If this PR updates or adds documentation content, it has received an approval from a technical writer.

External contributor checklist

• I've read the contribution guidelines.
• I've created a new issue (or assigned myself to an existing issue) describing what this PR addresses.

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Note

Adds a guide for using MetaMask Embedded Wallets (Web3Auth) as a signer with Smart Accounts and links it in the sidebar.

• Docs:
  • New guide: smart-accounts-kit/guides/smart-accounts/signers/embedded-wallets.md
    • Covers prerequisites, dependency installation, setting up Web3AuthProvider/WagmiProvider with config, and creating a smart account via toMetaMaskSmartAccount using Wagmi's wallet client.
    • Includes next steps to send user operations and gasless transactions.
• Navigation:
  • Add guides/smart-accounts/signers/embedded-wallets to gator-sidebar.js under Configure signers.

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Project	Deployment	Preview	Comments	Updated (UTC)
metamask-docs	Ready	Preview	Comment	Dec 9, 2025 10:53am

[bgravenorst]

Made some suggestions, and spotted a couple of typos.

[bgravenorst]

If there's a reason why you should choose our solution over a different embedded wallet solution, this may a place to promote.

[AyushBherwani1998]

I would not prefer adding a section on why choose xyz in guides, I would prefer tutorial for that which can marketed. Also, anyone using Smart Accounts they must have already figured out what EW they want to use, because the first step towards development journey would be choosing a signer -> then thinking about using a smart account.

[AyushBherwani1998]

I'll keep this for an open discussion, and revisit once we know what's the best way to promote.