A month ago I started a weekend project. I wanted to see if I could build a good task list manager, something my own brain actually needed. Today that project is EndyList.com: a full cross-platform app you can install on your iPhone or Android, with sign-in, sync across devices, encryption, passkeys, and support for multiple languages.
Here is the part that surprises everyone I show it to: the entire application runs on WordPress.
Not “the marketing site is WordPress.” The whole product. Every task you create, every sync, every login, every API call is handled by WordPress. And I built it as a beginner-level developer, with AI coding agents writing the overwhelming majority of the code.
I want to walk you through what happened, because I think it changes how we should all think about building things on the web.
It started as a simple question
I am not a professional developer. I know enough PHP, JavaScript, and MySQL to be dangerous, and I wanted to learn what app development with AI agents actually feels like. So I started building a task manager as a standalone web app: a list, some priorities, a clean design.
Partway through, I asked a different question: what if this entire thing ran on WordPress?
I already believed WordPress had a bigger future than most people give it credit for. Earlier this year I wrote about why I think WordPress can become the operating system of the agentic web. EndyList became my test of that idea. Not a slide deck, a real product.
What WordPress gave me for free
We (my AI agent and I) migrated the app into WordPress, with the product itself packaged as a WordPress plugin. Here is what I did not have to build:
- User accounts and login. WordPress has had battle-tested user management for over 20 years.
- Single sign-on. WordPress.com and Google login, plus passkeys for a password-free future.
- A database and APIs. WordPress’s REST API framework gave the app a clean, documented way to read and write data.
- Permissions and security. Roles, capabilities, session handling, all peer-reviewed by one of the largest open source communities in the world.
- Hosting that just works. EndyList runs on managed WordPress hosting, with backups, caching, and scaling handled for me.
When I asked my AI agent what we had gained by moving to WordPress, it listed these benefits unprompted. Six months ago I would have told you an app like this needed a native iOS/Android developer and a custom backend team. Instead, it is one plugin on a WordPress site, and it installs to your phone straight from the browser with no app store approval in sight.
How AI agents actually built it
The honest answer to “how did you build this” is that AI coding agents wrote the code and I acted as the product owner and quality gate. But this was not chaotic, prompt-and-pray coding. We ran a real engineering process: every change on its own branch, safety checks before anything touched live user data, backups before every deploy, and verification after. Over 100 versioned releases shipped in about a month.
The reason that worked, and this is the point I most want to land, is WordPress itself. AI agents learn from code, and WordPress is one of the most documented, most studied, most peer-reviewed web platform in existence. It powers over 40% of the web. Its plugin ecosystem is enormous, open source, and built on consistent conventions. Every time we needed something hard (authentication, permissions, APIs, translations), the agents did not have to invent it. They composed it from patterns that thousands of developers have already tested in production.
Compare that to the typical AI-built app: a bespoke stack, a hand-rolled login system, dependencies nobody is watching. Every one of those is a future security incident and a permanent maintenance burden. Building on WordPress meant my app inherited two decades of hardening on day one.
Try it, and try building your own
EndyList is live at endylist.com. It is a real product I use every day: recurring tasks, subtasks, encrypted notes, notifications that never leak your task titles to your lock screen. There is even a full developer platform at endylist.com/developers/, so other apps and AI agents can connect to it. Your AI assistant can literally manage your task list for you.
But the bigger takeaway is not my app. It is that this path is open to anyone. If you have an idea and an AI agent, you do not need to start from scratch, and I would argue you should not. WordPress already has the primitives every application needs: users, storage, permissions, APIs, commerce, hosting. The agentic web is going to need a foundation that is open, transparent, and trustworthy, and I think that foundation is WordPress.
I learned more building this in a month than in years of reading about it. Go build something! And if you do, I would genuinely love to hear about it.
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