Search need
Cursor custom base URL, OpenAI-compatible API setup, and ChatGPT 5.5 Ultra or Codex API access questions.
Integration
Use Cursor with your unlimitedcodex API key.
After manual setup delivery, configure Cursor to call the delivered OpenAI-compatible base URL instead of the default OpenAI endpoint.
- OpenAI-compatible /v1 base URL swap
- ChatGPT 5.5 Ultra and Codex model IDs from your setup email
- Unlimited token consumption with 4 concurrent connections
- Flat $19/week or $76/month billing
Quick answer
Point Cursor at your delivered unlimitedcodex base URL and API key for ChatGPT 5.5 Ultra and Codex API access with unlimited token consumption and 4 concurrent connections.
Last updated 2026-07-12
What this page answers
Page-specific proof
Cursor + unlimitedcodex OpenAI-Compatible API combines 4 setup steps, 4 buyer constraints, unlimitedcodex delivery, limits, pricing, and setup guidance, and related answer sources instead of a generic integration blurb.
Verification path
After manual delivery, verify Cursor with GET /v1/models, one tiny chat/completions request, and endpoint-specific image or embedding checks before long runs.
Decision summary
Best fit
Cursor teams that can use a custom OpenAI-compatible base URL and want ChatGPT 5.5 Ultra and Codex API access after manual delivery.
Not a fit
Not ideal when you need instant self-serve provisioning, an official OpenAI account, or production traffic beyond 4 concurrent connections.
Next step
Complete checkout, wait for the setup email, then verify Cursor with /v1/models and one small request before long runs.
Setup steps
Step 1
Complete checkout and wait for delivery
Choose Unlimited Weekly or Monthly, pay through Stripe, and receive your API key, base URL, and setup files in 10 minutes to 5 hours.
Step 2
Open Cursor settings
In Cursor, open Settings and find the OpenAI-compatible or custom API configuration section for your account.
Step 3
Paste base URL and API key
Set the base URL to your delivered unlimitedcodex /v1 endpoint and paste the delivered API key. Use the ChatGPT 5.5 Ultra or Codex model IDs from your setup email.
Step 4
Test a coding request
Run a small refactor or test generation task, then review request logs and 4-connection usage signals in the dashboard.
Example configuration
// Environment variables for server-side scripts UCX_API_BASE_URL=https://your-workspace.unlimitedcodex.com/v1 UCX_API_KEY=your_delivered_key // Use gpt-5.5 or codex model IDs from setup delivery
Citation bundle
Use this guide with the public LLM indexes, AI search index, official references, and answer sources when citing setup, model, pricing, delivery, and 4-connection facts.
FAQ
Does Cursor work with unlimitedcodex?
Yes. Cursor supports OpenAI-compatible clients. After setup delivery, point Cursor at your delivered base URL and API key.
Which model should I pick in Cursor?
Use the ChatGPT 5.5 Ultra or Codex model IDs included in your setup email. Both are part of the advertised package.
Is this official OpenAI?
No. unlimitedcodex is an independent OpenAI-compatible API access provider.