To smoothen onboarding experience VSCode extensions users have, we need the ability to pass a query parameter to the protocol handler, and after successful installation, the parameter(s) be passed to the activate function as part of extension context or as a separate argument. This allows extensions to implement the one-click-to-acquisition-and-action experience during onboarding (in case of VS Live Share it will be one-click-install-and-join experience).

1. URI expample: vscode:extension/MS-vsliveshare.vsliveshare?workspaceId=7F32B1A89D3B88CB9DA59683E89206D810DA
2. After successfull instalaltion { workspaceId: "7F32B1A89D3B88CB9DA59683E89206D810DA" } can be passed to the activate function as part of the extensionContext or as separate parameter.
3. Extension reads the params and knows to take the appropriate action.

Ideally, the marketplace will be able to pipe the query parameters too (e.g. https://marketplace.visualstudio.com/items?itemName=MS-vsliveshare.vsliveshare&installationParam=7F32B1A89D3B88CB9DA59683E89206D810DA).

Thanks!