Add custom model on Cursor

Hello. Can I make the API key of an AI site I am using available to me? When I enter the API key and Base URL, it does not give an error, but when I write a text in the chat, I get the following error. Here is the docs: Cortex API | Docs

Hey, is this happening only with the Claude model?

Nope all of them.

Try disabling all models and keep only claude-3.5-sonnet.

Doesnt work. This is not OpenAI or Claude API key. It’s custom AI.

I know it’s a custom API, it seems to be simply incompatible with Cursor.