This plugin can be installed from within VSCode by searching for Helios and picking the plugin with the following caption: Helios language support for VS Code.
Currently this plugin only provides syntax highlighting for files ending with the
The Helios IDE plugins repository can be found on github.
Third party language server
There is also a third party language server plugin with more advanced features like auto-complete (Helios versions <= 0.9 only). This plugin requires separate installation of the python language server. This plugin can be found within VSCode by searching for Helios Language Server.