August 19 (Wed) at 8 PM · YouTube Live · Free
Hello, this is Development Captain. I have an announcement for those who took the C++ Development Environment and Modern CMake courses.
I built my work environment using AI tools. At first, I added things without any clear concept or plan. I followed recommendations that this or that was good, and added skills, subagents, and MCPs as I came across them.
The result was the opposite. Instead of working better, it just consumed more tokens and behaved strangely. So I threw it all out. After that, I rebuilt the system I use now, reviewing everything one by one myself, and I’m still building it.
The skeleton that remained through that process consisted of five things. Even after switching tools from Claude Code to Codex, those five remained unchanged.
Once you install the tools, items come pouring in. If you use them without deciding what goes where, you end up using them the way the tools tell you to.
On the evening of August 19, I’ll open those five exactly as they are on the screen. This isn’t a presentation with slides; I’ll open the environment I actually use and show you where each item sits.
Handling things
Workspace — workspace · project. Where does this work take place?
Manual — system prompt. Something you don't have to repeat every time.
Workflow — skill. Running the same kind of work through the same procedure
Tools — MCP · CLI. What reaches the outside world
Agent — subagent. Something you send off separately
User scope and project scope — which one follows me around, and which one is attached only to this task?
Where do you get skills from?
Claude Code and Codex Side by Side — What Is Specific to the Tool, and What Is Independent of the Tool
For those who: - Have installed the tools but don’t know what each item does and are using the default settings - Have added more skills but can’t tell whether things have improved - Are using someone else’s configuration
Those who have installed the tools but do not know what each item does and are using the default settings.
Those who have increased their skills but cannot tell whether things have improved.
Those who copied someone else’s settings exactly but find that they don’t suit their own work.
Those who are wondering which one to commit to between Claude Code and Codex
Where to watch
https://www.youtube.com/watch?v=UF7r8vvoL8M
There’s no registration or application. Just join at the scheduled time. Questions will be taken through the YouTube chat.
The level we deal with is concepts. We don’t cover installation procedures or where to put files. Those aren’t things people need to memorize; they’re things you can simply tell a tool to do. We also don’t distinguish which tool is better, since that information becomes outdated in three months.