A Framework-Free Walkthrough of the Control Loop Behind Every Tool-Calling AI Agent

Short summary

A framework-free walkthrough explaining the four-step control loop—send context, evaluate response, execute tools, terminate—that powers every tool-calling AI agent beneath abstractions like LangGraph and CrewAI. The guide includes working Python code for tool definitions, dispatch logic, and conversation state management using Gemini's free-tier API. An explicit iteration ceiling prevents infinite loops when models fail to converge.

• •Every AI agent runs the same 4-step loop: send context, evaluate, execute tools, terminate
• •Working Python code for tool definitions, dispatch, and state management with Gemini
• •Uses Gemini free-tier API so developers can follow along without paid barriers

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