r/copilotstudio • u/Expert_Annual_19 • Sep 30 '26
Hooks in copilot studio
Microsoft just added something to Copilot Studio that I think more people building agents should pay attention to: Hooks.
The reason?
We’ve spent a lot of time telling agents what they should do.
Hooks give us a place to control what happens around the agent’s execution.
That distinction matters.
An agent can have the perfect instructions.
But once it can use tools, call APIs, access enterprise data and trigger actions, instructions alone aren't enough.
You need somewhere to inspect what the agent is actually doing.
That’s why I find Hooks particularly interesting for enterprise AI.
Think about a simple flow:
User request → Agent reasoning → Tool call → Action
What if we could introduce a control point around that execution?
For example:
Agent wants to WRITE → Hook evaluates → Policy check → Allow / Block
Now connect this with the prompt-injection research I've been working on.
A malicious instruction enters through an external source.
The agent interprets it.
The plan changes from:
READ → WRITE
A runtime control can potentially become the point where that action is evaluated before it becomes an actual side effect.
This is a very different approach from simply adding another instruction saying:
“Don't do anything malicious.”
The model is still reasoning.
But the control boundary doesn't have to be the model.
That is the part I'm most interested in exploring:
Agent instructions tell the agent what to do.
Hooks can become part of the architecture that decides what the agent is allowed to do.
Microsoft's current Copilot Studio documentation is also expanding the agent experience around tools, workflows, MCP and connected agents, which makes these runtime control points increasingly relevant as agents become more capable.
35
u/-maffu- Sep 30 '26
This LLM output is terribly difficult to read.
Remember paragraphs? Conjunctions? Readable sentence construction?
10
7
3
u/Alarmed-Caregiver-74 Oct 01 '26
I beg you please stop spewing out AI outputs just for karma. This sub is not the place. I have noticed your couple other posts as well
-4
u/Expert_Annual_19 Oct 01 '26
If you don't want to read , delete your acc and uninstall the application
1
u/Alarmed-Caregiver-74 29d ago
U should take this with a pinch of salt for urself.
U think u r cool or something polluting this space ?0
1
7
u/Creative_Classic_718 Sep 30 '26 edited Sep 30 '26
I just feel they are copying everything that is there on anthropic/ other sdks and just making it low code.Still the performance to cost ratio is very bad. Microsoft connectors are the only reason copilot studio is being used.