Wallet-Inject

One-button web page that opens MetaMask Mobile from Android Chrome and prefills a Sepolia ETH transfer using a MetaMask deeplink.

Live: https://willfx.github.io/Wallet-Inject/

What it does

Tap the button to:

• open MetaMask
• set network to Sepolia (chainId 11155111)
• prefill recipient + amount
• you confirm the transaction in MetaMask

How it works

It builds this deeplink and redirects the browser to it:

https://link.metamask.io/send/<RECIPIENT>@11155111?value=<VALUE_WEI>

value is in wei (1 ETH = 1e18 wei).

Configure

Edit index.html:

• RECIPIENT = address to receive the test ETH
• VALUE_WEI = amount in wei

Examples:

• 0.0007 ETH → 700000000000000
• 0.0006 ETH → 600000000000000

Notes

• Android Chrome doesn’t have an injected MetaMask provider, so the transfer is initiated through a deeplink.
• If MetaMask shows “Review alerts”, it’s usually due to a flagged recipient (e.g., 0x…dEaD) or insufficient balance for gas.