That initial feeling when the first three sources connect cleanly is such a relief, isn't it? I remember finally getting a Confluence space and a Google Drive folder to index without custom glue code.
But I want to echo the others who mentioned silent failures, especially for those niche internal APIs you have. The unified pipeline is great until it isn't, and the error reporting can be lacking. For our internal tools, I found it safer to write a small standalone script that just fetches and validates the API data into plain text files first, then point the SimpleDirectoryReader at that output. It adds a step, but it gives you a checkpoint to verify data quality before it hits your embedding model.
How are you handling validation or monitoring for those API sources to make sure the pipeline stays fresh?
The right tool saves a thousand meetings.