Support HTML Rendering in Agents Playground

[major-mayer]

Is your feature request related to a problem? Please describe.
Yes, without HTML rendering the Agents Playground makes it very hard to read tables or lists for example.

Describe the solution you'd like
HTML should be rendered as in Microsoft Teams for feature parity

Describe alternatives you've considered
None, but i am open to suggestions
Adding adaptive cards for all elements seems to be overkill

Additional context
Example in the playground

Equivalent message in Teams:

[m365-agent-toolkit-assistant]

👋 Hi @major-mayer,

Thank you for reporting this issue! We want to let you know that:

⏱️ Our team will personally review your issue
🎯 You can expect a response within 2 business days

✨ This is an AI-generated initial response
🤖 AI-Generated Preliminary Analysis:

Thanks for your detailed feature request. This is a known limitation: the Microsoft 365 Agents Playground currently does not support rich HTML rendering and only provides basic markdown, making tables and lists hard to read—unlike native Teams conversations.

Workarounds & Status:

• There is currently no built-in support for HTML rendering in the Playground.
• Using Adaptive Cards for all HTML-like content can be excessive, as you noted.
• Similar feedback has been noted by others, but no native fix is published yet.
• For fidelity, always verify message appearance in actual Teams clients.

Action:
If this is critical, consider upvoting or commenting on official feature request threads on the Agents Toolkit GitHub repo to raise its priority.

Sorry for the inconvenience—your feedback helps improve future tooling!

✨We'd love your feedback! Please take a moment to fill out our survey.

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Note: This is an automated first response generated by AI. A human team member will review your issue and provide a more detailed response soon. We appreciate your patience!

[qinzhouxu]

Hi @major-mayer , we have created an internal backlog for this feature request. Once it's supported we will let you know.

[major-mayer]

Great, thanks for the update