I've been working on my own coding agent setup for a while. I mostly use pi [0] because it's minimal and easy to extend. When the leak happened, I wanted to study how Anthropic structured things: the tool system, how the agent loop flows, A 500K line codebase is a lot to navigate, so I mapped it visually to give myself a quick reference I could come back to while adapting ideas into my own harness and workflow.

I'm actively updating the site based on feedback from this thread. If anything looks off, or you find something I missed, lmk.

[0] https://pi.dev/

If you don't have a rigid, external state machine governing the workflow, you have to brute-force reliability. That codebase bloat is likely 90% defensive programming; frustration regexes, context sanitizers, tool-retry loops, and state rollbacks just to stop the agent from drifting or silently breaking things.

The visual map is great, but from an architectural perspective, we're still herding cats with massive code volume instead of actually governing the agents at the system level.

Isn't it a simple REPL with some tools and integrations, written in a very high level language? How the hell is it so big? Is it because it's vibecoded and LLMs strive for bloat, or is it meaningful complexity?

I love your implementation.

Here was my first stab:

https://news.ycombinator.com/item?id=47595140

https://brandonrc.github.io/journey-through-claude-code/

I looked at the leaked code expecting some "secret sauce", but honestly didn't found anything interesting.

I don't get the hype around Claude Code. There's nothing new or unique. The real strength are the models.

https://ccprompts.info

Also I definitely want a Claude Code spirit animal

Website : https://coticsy.com/aime.html

iOS: https://apps.apple.com/us/app/aime-ondevice-ai/id6754805828

Android: https://play.google.com/store/apps/details?id=com.coticsy.ll...

For example the whole animation on this website, what does it say beyond that you make a request to backend and get a response that may have some tool call?

This deployment is temporarily paused

What I've learned about cost management: the real decision isn't "should I code this myself or use Claude Code" — it's "should I spawn Claude Code or handle this through a different approach entirely?" For complex builds where I need something architected from scratch, Claude Code is worth it. For smaller tasks or iteration on existing code, I've started using Sonnet in the web interface with the file as context instead. The visual guide here is helpful because it shows you what Claude Code is actually doing under the hood — understanding that workflow helps you predict whether a task will be a quick fix or a deep exploration that burns through your budget.

Kept working on it day and night to fix all the issues. I was using vercel free plan and did not expect this huge response. The site went down when I took a nap of 3 hours.

Woke up with calls from my team for a meeting. Saw the msgs of people telling me site is down.

Fixed the issue.

And now, I am updating it on regular speed.

Thank you for all the positive and negative feedback, Will consider it all in my future projects.

The real value of Anthropic is in the models that they spent hundreds of millions training. Anyone can build a frontend that does a loop, using the model to call tools and accomplish a task. People do it every day.

Sure, they've worked hard to perfect this particular frontend. But it's not like any of this is revolutionary.

I can't evaluate the source code architecture. What I can say is that before this, I had ideas I couldn't execute without hiring a developer. Now I ship them myself. Not prototypes, not demos. Real products that people use and pay for.

The leaked internals are interesting to engineers. From where I sit, the interesting part is that it works well enough that someone without a CS degree can build production software with it. That's the actual story.

I use it all day and love it. Don't get me wrong. But it's a terminal-based app that talks to an LLM and calls local functions. Ooookay…

Here is another one that goes in depth as well: www.markdown.engineering for anyone going deep on learning.

First command I looked at:

  /stickers:
  
  Displays earned achievement stickers for milestones like first commit, 100 tool calls, or marathon sessions. Stickers are stored in the user profile and rendered as ASCII art in the terminal.

What is the motivation for someone to put out junk like this?

https://github.com/simple10/agents-observe

How is this on the front page?

0 - https://github.com/zackautocracy/claude-code/blob/main/src/u...

The utils directory should only contain truly generic, business-agnostic utilities (such as date retrieval, simple string manipulation, etc.).

We can see that the code produced by Vibe is not what a professional engineer would write. This may be due to the engineers using the Vibe tool.

- find nothing - still manage to fill entire lages - somehow have a similar structure - are boring as fuck

At least this one is 3/4, the previous one had BINGO.

War flashbacks to genshin

i do shift ctrl F

The fact that now every agent designer knows what was already built is a huge shot of steroids to their codebase!