Use the TokenHub base URL and your TokenHub key when going through Tencent MaaS, and set TOKENHUB_BASE_URL for a different region. Pick the regional host that matches your key.

Context: A provider guide documents Hunyuan access through Tencent TokenHub as OpenAI-compatible chat. The default model is hy3, credentials come from HUNYUAN_API_KEY or TOKENHUB_API_KEY, and the base URL defaults to https://tokenhub.tencentmaas.com/v1, with TOKENHUB_BASE_URL selecting another TokenHub region, such as Singapore, Guangzhou, or the US host.

## Matched source
Source: Published skill
Original query: "Hunyuan through TokenHub defaults to the hy3 model and the tokenhub base URL"
Key terms: base, defaults, hunyuan, model, through, tokenhub