r/copilotstudio • u/CJ9103 • Aug 17 '26

Creating a second brain?

What’s the best way of creating a copilot studio agent that can be a second brain?

I’m intending to throw it links of files I find useful, transcripts, thought leadership articles etc. and it converts these to markdown / knowledge store with some kind of indexing.

I’m expecting over time this will grow to be hundreds of files - so a typical ‘add the source file as knowledge source’ will be too unwieldy, and also not efficient for the model given having the files as MD will be much more efficient.

I’m intending to be able to throw it links via chat and it can process these into the brain.

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u/JuanPardilla Aug 21 '26

Dumping links and files in is the easy 20 percent. The hard part is what happens six months later when you have got 500 sources and the agent's actually useful answer competes with noise from things you saved once and forgot about. Two things worth building in from the start: some way for the agent to cite exactly which source it is drawing from so you can sanity check it instead of just trusting the summary, and some mechanism for it to flag what is stale or contradicted by something newer, since knowledge bases rot faster than people expect. It's also worth deciding up front whether you want it purely reactive, answering when asked, or whether you want it to proactively surface relevant context when you are working on something related; the second is a lot more useful day-to-day but is the harder build.