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AI agents and tool use · Intermediate · 6 h

Tool use and the agent loop

Define tools, let the model call them, return results and errors, and stop safely.

Why employers care: Customer-facing AI features increasingly act, not just answer. Tool use is the building block.

In the roadmaps for: AI/ML Engineer, Forward Deployed Engineer

Lessons, in order

  1. A data question agent with real toolsGive Claude a schema tool and a read-only SQL tool over 3.4 million taxi trips, and watch it plan, query and answer.5 min

Next shelf: Designing agents you can trust