Cursor

Works for chat and Agent through Cursor's OpenAI-compatible path; Tab completion, subagents and Cursor's own built-in models do not go through your key, so read the limits before switching it on.

The kano-proxy CLI does not set up Cursor. Set it up by hand.

Set it up by hand

1. Create a dedicated key on the Access page, so you can revoke it on its own.
2. In Cursor Settings › Models, turn on OpenAI API Key and paste <your-api-key>.
3. Turn on Override OpenAI Base URL and enter https://<your-domain>/openai/v1.
4. Use + Add model and type a model id from your Models page, for example claude-code/claude-opus-5 or codex/gpt-5.6-sol. Model id rules are in Endpoints and model ids.
5. Select that model in the chat model picker.

Claude models go through the OpenAI-compatible base as well. Leave Cursor's Anthropic key off.

Why the Anthropic key stays off

Cursor has no base URL override for its Anthropic key. A Claude model added there would go to Anthropic directly, not to the proxy.

Check it

Send a chat message with the model you added. The request appears on the Logs page within seconds.

Limits

• The override is global. While it is on, every model that uses one of your own keys is routed to the proxy. Cursor's built-in models and any Anthropic-key models stop working. Turn the override off when you want those back. Cursor staff list this as a known issue.
• Tab always uses Cursor's own models.
• Subagents ignore custom keys and bill against your Cursor plan.
• Background and cloud agents have no base URL override.
• Requests travel through Cursor's servers. The proxy must be reachable from the internet, and your sk-kano-proxy- key passes through Cursor on every request.

Checked against

Cursor documentation and staff replies on the Cursor forum, 2026-09-04: API keys, Override OpenAI Base URL, Anthropic models break when the override is set, Subagents ignore the override. The official docs page does not describe the base URL override; that part rests on staff replies.