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Build an AI Agent in Python

Build a tiny coding agent that can read files, edit code, run Python, and loop on feedback.

What will you learn?

Write a toy agentic code editor in Python, similar to Claude Code or Cursor's Agent Mode. Understand how agents work from scratch by using the Google Gemini API to create an LLM-powered code agent. You'll use function calling and feedback loops to build an agent that can find and fix bugs in a real project!

Chapter List

1
LLMs
Learn how LLMs work and send prompts to the Gemini API using the Python client library
2
Functions
Write the functions your AI agent will need to modify files and run Python code
3
Function Calling
Give your AI agent the ability to call functions based on its system prompt and context window
4
Agents
Give your tool a proper feedback loop to make it truly "agentic" and fix a real bug

Join 16,101 students in the Build an AI Agent in Python course

Read reviews of their learning experiences

Awesome to see how things work behind the scenes :)

(5/5)
Simon Thinggaard profile image

Simon Thinggaard

Denmark

Great use of functional programming

(5/5)
Darrin Davis profile image

Darrin Davis

United States

Fun project!

(5/5)
Jacob C profile image

Jacob C

United States

Great companion project to peak any interest in LLM

(5/5)
G Ursus profile image

G Ursus

United States

Highly challenging. A strong introduction to agentic AIs but a neat project overall. At the very least, it taught me to debug more efficiently. It is tough, but you can learn some important things.

(4/5)
G-Junction  profile image

G-Junction

United States

This project, while guided, definitely felt like taking the training wheels off.

(5/5)
DrProfWallaby  profile image

DrProfWallaby

United States

This one feels closer to a project that one day you'll work with someday.

(5/5)
Vran_n  profile image

Vran_n

Philippines

讚啦!

(5/5)
子揚 曾 profile image

子揚 曾

Taiwan

Some instructions were a little bit hard to follow, but everything else was fun.

(3/5)
Adrian Herdin profile image

Adrian Herdin

Mexico

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Mediocrity doesn't cut it anymore

The only way to become a great developer is to write a lot of code

Avoid tutorial hell

by writing a ton of code

Stay motivated with

a game-like curriculum

Build portfolio projects

to prove your skills

Delve deeper

into foundational concepts

Learn flexibly online

without interrupting your life

For 1% the price of college

to minimize your financial risk

Frequently asked Questions

Got questions? We've got answers

Yes! It's free to create an account and start learning. You'll get all the immersive and interactive features for free for a few chapters. After that, if you still haven't paid for a membership, you'll be in read-only (content only) mode.