Right now, VS Code doesn’t expose automatic model discovery for custom endpoints configured through chatLanguageModels.json the same way it does for built-in providers or provider extensions. That JSON-based setup is static, you must define models manually. Dynamic discovery (for example, calling an OpenAI-compatible /v1/models endpoint and populating the model list automatically) is handled by provider implementations, not by the generic custom endpoint configuration. So if you want users to enter only a base URL + API key and have models appear automatically, the supported path today is to build a language model provider extension that implements discovery logic and surfaces the models …