Hi @Martser,

Try checking the docs on other limitations and requirements that may be preventing the agent brick from working. Here are some things you could check...

Verify prerequisites and region
Ensure your workspace has Agent Bricks preview enabled, serverless compute, Model Serving, partner-powered AI, and Unity Catalog, and that you’re in a supported region for Knowledge Assistant.

Use a supported Vector Search index type
Knowledge Assistant supports Vector Search indexes that use the Databricks-managed embeddings with the databricks-gte-large-en model. It does not support self-managed or direct-access indexes. If you’re selecting an existing index, make sure it’s a Delta Sync index configured with gte-large-en; avoid Direct Access indexes.

Using UC Files
Place your files in a Unity Catalog volume (txt, pdf, md, ppt/pptx, doc/docx). Files larger than 50 MB are skipped. When you create the agent with UC Files, Knowledge Assistant will handle parsing and build a supported index under the hood.

Check workspace limitations
Knowledge Assistant is not supported in workspaces with Enhanced Security and Compliance enabled.

After checking the above, if you made any changes, try re-creating the agent. I hope that helps, but please let me and the team know if it doesn't resolve the issue.

-James