Embedding HTML in tool output

[ftowfic]

Thank you for developing MCPO. It's been helpful to rapidly brainstorm ideas for new tools.

I see on the OpenWebUI features page that HTML embedding has now been introduced. However, it requires a "Content-Disposition": "inline" header.

Utilizing the mcpo commandline, I have tried including a custom header parameter for my server:

/root/.local/bin/uvx mcpo --port $PORT --api-key $API_KEY --header '{"Content-Disposition": "inline"}' -- mcp_custom_command

However, I see the raw HTML being output by the tool and LLM model, but not rendered/embedded inside the openwebui interface. Has anyone attempted this? Any advice on how to embed HTML from MCPO would be really appreciated. Thank you