Build Your Own Agentic Harness in Python - Full Tutorial

Check out the AI stack I use for my own business (in partnership with HubSpot): https://clickhubspot.com/5dedde

In this video, I build a full AI agent harness in Python completely from scratch — no LangChain, no CrewAI, no framework of any kind — just Python, an LLM, and the actual mechanics that make an agent an agent.

Want to LEARN how to build useful AI agents that actually get things done? Go here: https://aiagentbuilders.co/yt

???? Tools I Use
Get 10% off with code techwithtim
Openclaw setup: https://www.hostinger.com/techwithtim
VPS setup: https://www.hostinger.com/techwithtim10
Wispr Flow (Best AI Dictation): https://ref.wisprflow.ai/TechWithTim-aug26

???? Video Resources ????
Download the code in this video: https://www.aiagentbuilders.co/yt-resources/python-agent-harness

⏳ Timestamps ⏳
00:00 | Overview
00:45 | Environment/Project Setup
03:38 | What is an LLM & How it Works
05:50 | V0: Calling LLMs
09:25 | Model Selection & Local Models
13:47 | HubSpot Free Resource
14:44 | V1: Tool Calling
22:56 | V2: Agentic Loop
25:36 | V3: MCP Servers
30:53 | V4: Saving Memory
33:55 | Full Harness Build

Hashtags
#PythonAI #AIAgents #MCP

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