NextChat, Chatbox & Other OpenAI Clients

Any application that accepts a custom OpenAI-compatible endpoint works with Nyxos API. Every app needs two values:

• Host / Endpoint URL: https://api.nyxos.shop
• API Key: your sk-... key.

Important: the apps below build the full request path (/v1/chat/completions) from the host you enter. Enter the root URL without /v1 — otherwise you get /v1/v1/... and a 404 (see Base URL Rules).

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NextChat (ChatGPT-Next-Web)Copy Anchor Link

1. Open Settings → find the custom endpoint / access settings.

2. Endpoint: https://api.nyxos.shop

3. API Key: sk-YOUR_NYXOS_KEY

4. In Custom Models, list the exact IDs you want, separated by commas (each prefixed with +):

   Copy Text

   +claude-sonnet-4-5,+gpt-5,+grok-4

   (Copy current IDs from the /pricing page — the example above is illustrative.)

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ChatboxCopy Anchor Link

1. Open Chatbox → Settings.
2. AI Provider: OpenAI API.
3. API Host: https://api.nyxos.shop (Chatbox appends /v1/chat/completions automatically).
4. API Key: sk-YOUR_NYXOS_KEY.
5. Model: an exact ID from /pricing.

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Cherry Studio, LibreChat & OthersCopy Anchor Link

Same pattern in each app's custom OpenAI endpoint settings:

If any of these apps still returns 404 with /v1/v1/... in the request log, the app already added /v1 — that's the signal the root URL is the right value.