StarKey Installation

Install StarKey from the surface you use:

• Browser extension — Chrome Web Store  (Chrome, Brave, Edge)
• iOS — App Store 
• Android — Google Play 

After installing the extension, pin it in the browser toolbar and reload any dApp tab that was already open — the provider is injected at page load.

Checking for the extension from a dApp

The extension injects a starkey object into the top-level document of any http:// or https:// page. To check whether it is present:

const isStarkeyInstalled = typeof window !== 'undefined' && 'starkey' in window

The wallet is multi-chain, so the object is namespaced per chain — window.starkey.supra for Supra, window.starkey.ethereum for EVM networks. Check the namespace you actually use rather than the top-level object alone:

const provider = window.starkey?.supra
 
if (!provider) {
  window.open('https://starkey.app/', '_blank')
}

Related pages

• Detecting the Provider — the full detection flow for dApps
• Get started with Supra
• Get started with EVM networks