Stage 02 · 02 · Tools & architecture · skill 3 of 3

Agent architecture

A loop: observe, think, act, observe. Keep it small enough to debug.

Recommended first: Tools & function calling

After this you will be able to

• Implement a tool-using loop in <150 lines
• Log every tool call
• Stop on max steps

Hugging Face · why we picked it

Completing this unlocks: Memory & planning, Multi-agent patterns, Agent safety, Agent frameworks in practice