Is there a WebSocket API documentation

[ukao]

I want to extend the capabilities of code-server by using WebSocket to interact with it. Does anyone know if there’s an API documentation for WebSocket integration with code-server?
Here's my development scenario: I will first install a vscode plugin on code-server, and then i will use WebSocket interfaces to trigger the plugin's operations.

[ukao]

It's vscode api, not code-server