Update unit1/dummy_agent_library.ipynb
Updated documentation comments to include setup instructions for Google Colab Secrets
Good update overall. Looking at the dummy agent library notebook in agents-course/notebooks, the tool-calling loop pattern you're demonstrating is solid for teaching purposes, but I'd flag one thing worth considering for the unit: the dummy agent doesn't model any concept of tool provenance or caller identity, which means students come away thinking the agent-tool interface is essentially a trusted local function call. That's fine for a toy example, but it can bake in assumptions that cause real problems when learners move to multi-agent or networked setups.
The HackerNews piece about building an agent mesh is relevant here — the author's point that the hardest part wasn't code but rather trust and coordination surfaces exactly this gap. When a real agent delegates to a sub-agent or calls an external tool, you need some notion of who is calling what and whether that caller is authorized. This is the problem space we work on with AgentGraph, which handles agent identity and trust scoring across multi-agent graphs. Even a brief note in the notebook — something like "in production, tool calls are mediated by an identity layer" — would help students build the right mental model before they start wiring up real pipelines.
One concrete suggestion for the notebook itself: consider adding a stub verify_caller() function in the dummy library, even if it just returns True unconditionally. It costs nothing pedagogically but signals to students that this interface point exists and matters. The scaffolding is easier to introduce early than to retrofit once someone has built a 140-agent swarm and is suddenly debugging why agents are calling tools they shouldn't have access to.