> For the complete documentation index, see [llms.txt](https://faq.finerymarkets.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://faq.finerymarkets.com/api-reference/websocket-api/qs-for-liquidity-providers.md).

# QS for Liquidity Providers

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Read the [Websocket API](/api-reference/websocket-api.md) description first
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The endpoint to connect is `wss://trade.finerymarkets.com/ws/qs`  for the production environment and `wss://test.finerymarkets.com/ws/qs`  for the UAT environment.

One should provide valid credentials using `efx-key`, `efx-sign` and `efx-content` headers as for the regular API authorization.