RAG with Autogen 0.4

[sridharratna]

Hi All,
I have a use case where I have to search knowledge base with RAG, web search and communication with custom agents. I have started with the below, but it's with 0.2 version, but RetrieveUserProxyAgent is not available in 0.4. How can i run the same with 0.4?
https://microsoft.github.io/autogen/0.2/docs/topics/retrieval_augmentation/#example-setup-rag-with-retrieval-augmented-agents-with-pgvector

[ekzhu]

You can start with tools. You can build RAG tools and provide it to the agent, such as using LangChainToolAdapter: https://microsoft.github.io/autogen/dev/reference/python/autogen_ext.tools.langchain.html#autogen_ext.tools.langchain.LangChainToolAdapter, and the graph rag tool (next release) (#4612).

How's your experience with the RAG agents in v0.2? Do you feel a need to have specialized RAG agents, or is Agent + RAG tools enough for you.