[Feature Request]: JSON API response

[dangerousbeans]

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Is your feature request related to a problem?

I wish to use the completions API to optionally also return JSON so I can call RAGflow from another app

Describe the feature you'd like

POST /api/v1/chats/{chat_id}/completions

with a new body param: "json": boolean

Describe implementation you've considered

Asking the LLM to produce JSON output seems to just cause errors

Documentation, adoption, use case

Additional information

No response