Geir Freysson

Thanks for having me!

I'm talking about building AI agents at PyData London. Very much looking forward to this!

Building a Fantasy Premier League Chatbot with Vibe Coding (and Tears) – Geir’s notes I’ve been having fun recently vibe coding a chatbot that can access data, in this case from the Fantasy Premier League. Spoiler: Vibe coding is both amazing and infuriating.

Wrote some notes on the experience here:

geirfreysson.com/posts/2025-0...

It even understands Icelandic

Hopefully it will help me beat my mini league

Had fun vibe coding a chatbot that knows Fantasy Premier League statistics.
fpl.withrobots.ai

I'm addicted to piping things into the llm tool, which runs LLMs in the command line.

Here is how I wrote tests for codegrab using ChatGPT:

Command line tool to download code or functions to use as an AI prompt – Geir’s notes I ran into a bug where one function handled stats correctly, but another didn’t. To compare them, I wrote codegrab, a simple command-line tool to pull code from GitHub and pipe it into an AI for analy...

I wrote a tool to quickly grab code from github and pipe it into an AI prompt. Then I used it to write tests for itself.

geirfreysson.com/posts/2025-0...

LLM codegen workflow – Geir’s notes

Interesting blog post trending on Hacker News on codegen workflows with LLMs.

TLDR: Best for new, small, modular projects.

www.geirfreysson.com/posts/2025-0...

I had fun piping the code review results into @simonwillison.net's llm tool:

llm-code-review.. | llm --system "Is this fix absolutely critical, answer only with critical or not critical"

> Not critical

Command Line Tool for Code Reviews with an AI Model Running Locally – Geir’s notes

Here's my attempt to become the least popular person on my team: Command-line AI code review tool: geirfreysson.com/posts/2025-0...

Searching PDF documents using LLMs with RAG – Geir’s notes Embeddings can be used to search documents with results that reflect the meaning of your search rather than the actual search words and terms. In this post, I implement a RAG search with the help of L...

With bigger context windows, RAG maybe less relevant than it was a week ago. That didn't stop me from implementing a basic RAG search for my PDFs 🙃
geirfreysson.com/posts/2025-0...

Chat with Deepseek on your Mac via the browser – Geir’s notes

TIL: Chat with Deepseek on my Mac via a browser. WebUI is neat, I wonder if anyone is using it in an enterprise setting. geirfreysson.com/posts/2025-0...

Simpler version:

The fact that you can write code that realises that:
- "The man with the tie ran for office."
is closer to
- "The woman in the dress became a politician.
than
- "The man with the tie ran for a bus.",
is amazing...

Understanding AI embeddings - how machines see language – Geir’s notes

Trying to teach myself AI. Thought I'd start with embeddings, which are fascinating. geirfreysson.com/posts/2025-0...

‪Full chat: chatgpt.com/share/6779c9...

ChatGPT: "Create an image of people that look Icelandic"

"Make them look so Icelandic there have never been more Icelandic people in one picture"

... and more, and more...

Jólafrí á Íslandi í hnotskurn. Skrefafjöldi hrapar á meðan maður keyrir milli kaffiboða 🎄

Takk fyrir hjálpina Google Maps 😂 Vesturbæingar þurfa kannski ekki reiðufé.

Flott stell! (Miðaldra comment, ég veit.)

This guy's essays never fail to make me smile ludic.mataroa.blog/blog/the-bro...

Ég er ekki einu sinni sammála sjálfum mér...

Hvað gera bændur þá? #kosningar

Var ekki var við svona mikið fjör þegar ég var fastagestur í HQ á Hverfisgötunni

Skemmtilegt viðtal við CEO Bluesky - tiltrú mín á þessari tilraun jókst við að hlusta podcasts.apple.com/gb/podcast/h...

Ekkert á móti útlendingum svona þannig séð 🙈

Is this place going to take off if X goes 💥?

Mættur á Bláskjá ef X skyldi fara á hausinn.