Source: https://ailoot.ai/docs/en/integrations/hugging-face-chat-ui/
Canonical: https://ailoot.ai/docs/en/integrations/hugging-face-chat-ui/
Language: en

[Chat applications](https://ailoot.ai/docs/en/integrations/#chat) 

# Hugging Face Chat UI

[Markdown](https://ailoot.ai/docs/en/integrations/hugging-face-chat-ui/index.md)

Self-hosted web chat · OpenAI Chat

| Format | Where to set it up |
| --- | --- |
| OpenAI Chat | The .env.local file (OPENAI\_BASE\_URL, OPENAI\_API\_KEY) |

## [](https://ailoot.ai/docs/en/integrations/hugging-face-chat-ui/#setup)Setup

Copy the configuration and replace `sk-...` with your key from the Ailoot Dashboard. Prefer storing the key in the environment variable `AILOOT_API_KEY`, if the application supports it.

Before starting, request GET /v1/models with your Ailoot key. Choose an exact model ID whose methods include POST /v1/chat/completions, then use that ID in the configuration. For agents, also check tool support and the features required by your client version.

```bash
OPENAI_BASE_URL=https://api.ailoot.ai/v1
OPENAI_API_KEY=sk-...
```

Example model: `deepseek-v4-pro`. Choose any other model from the [catalog](https://ailoot.ai/models/en/) — check that it supports the format you need.

## [](https://ailoot.ai/docs/en/integrations/hugging-face-chat-ui/#notes)Good to know

Chat UI works only with OpenAI-compatible APIs through OPENAI\_BASE\_URL and retrieves its model list from /models.

## [](https://ailoot.ai/docs/en/integrations/hugging-face-chat-ui/#check)Test

- For the OpenAI format, the URL is `https://api.ailoot.ai/v1` (or the full path if the application asks for a full URL).
- Ask a short question. If you get an error, check the code and Request ID, then consult [Errors and limits](https://ailoot.ai/docs/en/errors/).
- 404 immediately after setup almost always means the URL is wrong: an extra or missing `/v1`.
- 402 — insufficient balance for the reserve. Agents reserve more than chat: [why](https://ailoot.ai/docs/en/billing/reserve/).

Application documentation: [https://github.com/huggingface/chat-ui](https://github.com/huggingface/chat-ui)

Still have questions? Send your Request ID and a description — we'll help you troubleshoot.[Contact support](mailto:support@ailoot.ai)

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