The tools of an Agentic Engineer

A lot of great things have origins from the 1970s: Hip Hop redefining music and street culture, Bruce Lee was taking Martial Arts to the next level and the initial development of something called editor macros (also known as Emacs) was happening. I was born in that decade, but that's purely coincidence.

My choice of primary development tool since a couple of years back is that editor from the seventies. It is my choice of development for Python, JavaScript, TypeScript and Lisp dialects such as Clojure and elisp. And today, as an agentic engineer, it turned out to be a great choice for this kind of software development too. With the rise of various CLI, TUI & Desktop based tools for AI development, it would be reasonable to think that this ancient code editor would become obsolete - right?

Not if you knew about the innovative Emacs community. It is driven by passion, support from the community itself and Open Source. These components are usually more resilient and reliable long term than the VC driven startup culture. Emacs is part of the greater Lisp community, where a lot of innovations in general take place. The Clojure community is cutting edge in many aspects of software development including AI.

More Agents

One thing that I have noticed lately is that the more I get into Agentic Engineering, the more I use Emacs. When the focus has shifted from typing code to instruct and review, I have found use of Emacs powers I haven't really needed until now. Tools like Magit (git) and I'm also learning more about the powerful Org Mode. I didn't care that much about Markdown before, but now it is an important part of the development itself. So I just configured my Emacs to have a nice-looking, simple and readable markdown experience.

"More Agentic Engineering, More Emacs"

With Emacs, I use a great AI-tool called Eca and with it I am not limited to any specific vendor for agentic development. Vendor lock-in is something I really want to avoid. The combination of Eca and the power tools mentioned before, makes a very nice Agentic Engineering toolset. Eca is actively developed and has a lot of useful features and a very nice developer experience. It supports standards like AGENTS.md, commands, skills, hooks, sub-agents and use a client-server setup in the same way as the language server protocol. It is Open Source and not only for Emacs. Have a look at the website for support of your favorite editor or IDE. By the way, Eca is developed in Lisp (Clojure).

I have my Eca-setup shared at GitHub, and have also some contributions to the Eca plugins repository.

Human Driven Development

With this setup, the human reviewing can happen in real time, and doesn't have to wait until the end where the amount of code too often is quite overwhelming. The human developer (that's me) can quickly act when noticing that things takes a different route than expected, in a similar way as the stop-the-line principle from the Toyota Way. This is a lean way to reach the end goal quickly: deploying code that is good enough for production and adds value.

I have found that many Agile practices in combination with developer friendly tools fits well with the ideas of Agentic Engineering. Even though I've seen worrying signs of a return of the Waterfall movement.

To summarize: the result of my new Agentic Engineering development-style is that I haven't put my IDE to the side - it's at the very Center of the agentic workflow.

^{Top Photo by me, taken at Åreskutan, Jämtland, Sweden.}