Seán McNamara
Software engineering & other rabbit holes
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Library · 58
Everything in one place: longer posts, short notes, and links worth passing on.
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AI
Two AI Skills Everyone Should Use
The humanizer skill stops your writing sounding like AI slop, and i-have-adhd makes AI replies easier to digest while you iterate.
22 Oct 2026
6 min
Find
pi.dev
Pi
A minimal, open-source coding agent harness that leaves out sub-agents and plan mode so you can add only what you want through extensions and packages.
18 Oct 2026
Link ↗
Post
AI
AI's Environmental Impact
Training a model has a huge one-off energy cost and a single prompt barely registers, but billions of prompts a day can still outweigh the training. There's a calculator to try your own usage too.
17 Oct 2026
5 min
Post
AI
AI Hero's Grill and Wayfinder Skills
When I reach for grill-me, grill-with-docs and wayfinder, three of Matt Pocock's AI Hero skills.
10 Sep 2026
2 min
Find
ralphex.com
Ralphex
A CLI that runs Claude Code or Codex through a plan you write, one fresh session per task, then reviews the result in several rounds.
5 Sep 2026
Link ↗
Post
Productivity
My Opinionated MacBook Setup
Everything I change on a fresh machine, in four parts: the settings anyone benefits from, the habits to unlearn if you're coming from Windows, the next level up, and the bits that only matter if you write code.
10 Aug 2026
15 min
Post
Programming
Building Chinwag, a WhatsApp Chat Analyser
Parsing WhatsApp exports into a timeline, running lexicon-based sentiment over it, and keeping every byte on your own machine.
7 Apr 2026
5 min
Post
AI
What Are World Models in AI?
My notes on what people mean by "world models" in AI: models that predict what happens next, explained with chess and driving.
1 Apr 2026
3 min
Post
Productivity
Parallel Claude Code with Git Worktrees
How I run several Claude Code sessions at once, each in its own git worktree with its own Docker containers, so nothing ever needs stashing.
23 Jul 2025
5 min
Post
Productivity
My Development Workflow in 2024
How I develop in 2024, from Docker for PHP and Go to why I still host on DigitalOcean rather than AWS.
9 Nov 2024
5 min
Note
Explainers
What's the point of Flight Mode?
Why we still switch to flight mode when we fly, and when that might change.
11 Jun 2023
2 min
Post
AI
How I'm utilising ChatGPT
How I use ChatGPT for programming, from answering questions that used to send me to Stack Overflow to parsing web pages.
13 May 2023
1 min
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