OpenAI-SDK compatible

The missing Cursor API

Cursor does not expose a standard inference API. This does.

Setup

How to use it

Cursor does not expose a standard inference API. This proxy accepts familiar OpenAI-style requests and transforms the formats into something Cursor can use.

Use the OpenAI SDK, Vercel AI SDK, or any client that can set a custom base URL. Authenticate every request with your Cursor API key as a Bearer token.

FAQ

Questions people usually ask

How much does it cost?

You need a cursor subscription to use this api. Every request must be signed by your api key - cursor plans start at $20/month. We (StandardAgents) are not making any money on this.

Is this ok with Cursor?

We really hope so! You still need a Cursor account to use this API, and it applies to your limits just like any other integration would. The folks at Cursor seem to be good-faith actors. Of course, if they publish their own API in the future, we would wholeheartedly recommend you use that instead.

How does it work?

The proxy accepts familiar OpenAI-style requests, then sends them on to Cursor in a format it can handle. Streaming requests stream back as server-sent events; non-streaming requests are buffered and returned as normal JSON.

Who is Standard Agents?

Standard Agents is a team in Virginia building reliable agent infrastructure. Follow @jpschroeder for updates.

If you want early access to what we are building, register below. If you are interested in having our team assist you in building agents, contact info@standardagents.ai.

Do you store my Cursor API key?

No. Your app sends the key as a Bearer token on each request, and the proxy forwards it to Cursor for that request.

Can I use the OpenAI or Vercel AI SDK?

Yes. Point the SDK at this proxy's base URL and keep using the same chat completions or responses shape you already know.

Which models work?

Call /v1/models for the current verified list. Cursor's public model catalog includes models like gpt-5.5, but this proxy path currently rejects that id, so we do not advertise it here until it works.

Is this production-ready?

If you want to use something like this in production, contact info@standardagents.ai. We can help you build the right agent infrastructure around your product instead of treating a demo proxy as the whole system.