Building Copilot Declarative Agents: Everything I’ve learned building ClothesPilot

Declarative Agents allow developers to extend what Microsoft 35 Copilot can do out of the box, by creating and registering agents to take on specific workloads. Users can choose to engage with these agents directly, or mention them in passing.

As an experiment, I created ClothesPilot to help me choose what to wear each day. With knowledge of my wardrobe, my calendar and the day’s weather, ClothesPilot made suggestions, and I followed them without question.

In this talk, I’ll go through everything I learnt during this process and how you can combine different APIs to create your own Declarative Agents. We’ll cover the pre-requisites, how to shape the APIs you have, how to build and modify your agent, and all the tricks and gotchas I picked up along the way.

I’ll be digging into the code and demo’ing the effect of various changes along the way to keep things interesting, and you’ll leave with a clear implementation plan for how you can build your own Declarative Agent for Microsoft 365 Copilot.