I'd love to see what is being achieved by these massive parallel agent approaches. If it's so much more productive, where is all the great software that's being built with it? What is the OP building?
Most of what I'm seeing is AI influencers promoting their shovels.
Even if somebody shows you what they've built with it, you're none the wiser. All you'll know is that it seemingly works well enough for a greenfield project.
The jury is still very far out on how agentic development affects mid/long term speed and quality. Those feedback cycles are measured in years, not weeks. If we bother to measure at all.
People in our field generally don't do what they know works, because by and large, nobody really knows, beyond personal experiences, and I guess a critical mass doesn't even really care. We do what we believe works. Programming is a pop culture.
Does good design up front matter as much if an AI can refactor in a few hours something that would take a good developer a month? Refactoring is one of those tasks that's tedious, and too non-trivial for automation, but seems perfect for an AI. Especially if you already have all the tests.
I’m constantly using code agents to work on feature development and they are constantly getting things wrong. They can refactor high level concepts but I have to nudge them to think about the proper abstractions. I don’t see how a multiagent flow could handle those interactions. The bus factor is 1, me.
> Especially if you already have all the tests.
Most tests people write have to be changed if you refactor.
Upgrades, API compatibility, and cross version communication are really important in some domains. A bad design can cause huge pain downstream when you need to make a change.
I'm using Claude Code (loving it) and haven't dipped into the agentic parallel worker stuff yet.
Where does one get started?
How do you manage multiple agents working in parallel on a single project? Surely not the same working directory tree, right? Copies? Different branches / PRs?
You can't use your Claude Code login and have to pay API prices, right? How expensive does it get?
Check out Claude Code Team Orchestration [1].
Set an env var and ask to create a team. If you're running in tmux it will take over the session and spawn multiple agents all coordinated through a "manager" agent. Recommend running it sandboxed with skip-dangerous-permissions otherwise it's endless approvals
Churns through tokens extremely quickly, so be mindful of your plan/budget.
1. https://code.claude.com/docs/en/agent-teams
git checkout four copies of your repo (repo, repo_2, repo_3, repo_4) within each one open claude code Works pretty well! With the $100 subscription I usually don't get limited in a day. A lot of thinking needs to go into giving it the right context (markdown specs in repo works for us)
Obv, work on things that don't affect each other, otherwise you'll be asking them to look across PRs and that's messy.
Look into git worktrees and thank me later!
I am now releasing software for projects that have spent years on the back-burner. From my perspective, agent loops have been a success. It makes the impractical pipe-dream doable.
Yeah, I have a never ending need of things I could easily make myself I I could set aside 7-10 hours to plan it out, develop and troubleshoot but are also low priority enough that they sit on the back burner perpetually.
Now these things are being made. I can justify spending 5-10 minutes on something without being upset if AI can't solve the problem yet.
And if not, I'll try again in 6 months. These aren't time sensitive problems to begin with or they wouldn't be rotting on the back burner in the first place.
That’s completely ignoring the point of the person you are responding to. They weren’t talking about small greenfield projects.
Agent loops also enables the "hard discipline" of making sure all of the tests are written, documentation is up to date, specs are explicitly documented, etc. Stuff that often gets dropped/deprioritized due to time pressure & exhaustion. Gains from automation applies to greenfield & complex legacy projects.
I just avoided $1.8 million/year in review time w/ parallel agents for a code review workflow.
We have 500+ custom rules that are context sensitive because I work on a large and performance sensitive C++ codebase with cooperative multitasking. Many things that are good are non-intuitive and commercial code review tools don't get 100% coverage of the rules. This took a lot of senior engineering time to review.
Anyways, I set up a massive parallel agent infrastructure in CI that chunks the review guidelines into tickets, adds to a queue, and has agents spit up GitHub code review comments. Then a manager agent validates the comments/suggestions using scripts and posts the review. Since these are coding agents they can autonomously gather context or run code to validate their suggestions.
Instantly reduced mean time to merge by 20% in an A/B test. Assuming 50% of time on review, my org would've needed 285 more review hours a week for the same effect. Super high signal as well, it catches far more than any human can and never gets tired.
Likewise, we can scale this to any arbitrary review task, so I'm looking at adding benchmarking and performance tuning suggestions for menial profiling tasks like "what data structure should I use".
You're not wrong. The current bottleneck is validation. If you use orchestration to ship faster, you have less time to validate what you're building, and the quality goes down.
If you have a really big test suite to build against, you can do more, but we're still a ways off from dark software factories being viable. I guessed ~3 years back in mid 2025 and people thought I was crazy at the time, but I think it's a safe time frame.
It's for personal use, and I wouldn't call it great software, but I used Claude Code Teams in parallel to create a Fluxbox-compatible window compositor for Wayland [1].
Overall effort was a few days of agentic vibe-coding over a period of about 3 weeks. Would have been faster, but the parallel agents burn though tokens extremely quickly and hit Max plan limits in under an hour.
1. https://github.com/ecliptik/fluxland
This is really cool. Out of curiosity did you know how to do this sort of programming prior to LLMs?
Not really, most of my programming experience is for devops/sysadmin scripts with shell/perl. I can read python/ruby from supporting application teams, but never programmed a large project or application with it myself. Last I used C was 25 years ago in some college courses and was never very good with it.
Pretty cool!
I'm experimenting with building an agent swarm to take a very large existing app that's been built over the past two decades (internal to the company I work for) and reverse engineer documentation from the code so I can then use that documentation as the basis for my teams to refactor big chunks of old-no-longer-owned-by-anyone features and to build new features using AI better. The initial work to just build a large-scale understanding of exactly what we actually run in prod is a massively parallelizable task that should be a good fit for some documentation writing agents. Early days but so far my experiments seem to be working out.
Obviously no users will see a benefit directly but I reckon it'll speed up delivery of code a lot.
People are building software for themselves.
Correct. I've started recording what I've built (here https://jodavaho.io/posts/dev-what-have-i-wrought.html ), and it's 90% for myself.
The long tail of deployable software always strikes at some point, and monetization is not the first thing I think of when I look at my personal backlog.
I also am a tmux+claude enjoyer, highly recommended.
tmux too.
Trying workmux with claude. Really cool combo
I’ve known too many developers and seen their half-assed definition of Done-Done.
I actually had a manager once who would say Done-Done-Done. He’s clearly seen some shit too.
I work for Snowflake and the code I'm building is internal. I'm exploring open sourcing my main project which I built with this system. I'd love to share it one day!
In my view, these agent teams have really only become mainstream in the last ~3 weeks since Claude Code released them. Before that they were out there but were much more niche, like in Factory or Ralphie Wiggum.
There is a component to this that keeps a lot of the software being built with these tools underground: There are a lot of very vocal people who are quick with downvotes and criticisms about things that have been built with the AI tooling, which wouldn't have been applied to the same result (or even poorer result) if generated by human.
This is largely why I haven't released one of the tools I've built for internal use: an easy status dashboard for operations people.
Things I've done with agent teams: Added a first-class ZFS backend to ganeti, rebuilt our "icebreaker" app that we use internally (largely to add special effects and make it more fun), built a "filesystem swiss army knife" for Ansible, converted a Lambda function that does image manipulation and watermarking from Pillow to pyvips, also had it build versions of it in go, rust, and zig for comparison sake, build tooling for regenerating our cache of watermarked images using new branding, have it connect to a pair of MS SQL test servers and identify why logshipping was broken between them, build an Ansible playbook to deploy a new AWS account, make a web app that does a simple video poker app (demo to show the local users group, someone there was asking how to get started with AI), having it brainstorm and build 3 versions of a crossword-themed daily puzzle (just to see what it'd come up with, my wife and I are enjoying TiledWords and I wanted to see what AI would come up with).
Those are the most memorable things I've used the agent teams to build in the last 3 weeks. Many of those things are internal tools or just toys, as another reply said. Some of those are publicly released or in progress for release. Most of these are in addition to my normal work, rather than as a part of it.
Further, my POV is that coding agents crossed a chasm only last December with Opus 4.5 release. Only since then these kinds of agent teams setups actually work. It’s early days for agent orchestration
can you tell us about this "ansible filesystem swiss army knife"?
I'd be happy to! I find in my playbooks that it is fairly cumbersome to set up files and related because of the module distinction between copying files, rendering templates, directories... There's a lot of boilerplate that has to be repeated.
For 3-4 years I've been toying with this in various forms. The idea is a "fsbuilder" module that make a task that logically groups filesystem setup (as opposed to grouping by operation as the ansible.builtin modules do).
You set up in the main part of the task the defaults (mode, owner/group, etc), then in your "loop" you list the fs components and any necessary overrides for the defaults. The simplest could for example be:
Which defaults to a template with the source of "myapp.conf.j2". But you can also do more complex things like: I am using this extensively in our infrastructure and run ~20 runs a day, so it's fairly well tested.More information at: https://galaxy.ansible.com/ui/repo/published/linsomniac/fsbu...
People are building for themselves. However I’d also reference www.Every.to
They built the popular compound-engineering plugin and have shipped a set of production grade consumer apps. They offer a monthly subscription and keep adding to that subscription by shipping more tools.
The influencers generate noise, but the progress is still there. The real productivity gains will start showing up at market scale eventually.
There are dozens and dozens of these submitted to Show HN, though increasingly without the title prefix now. This one doesn't seem any more interesting than the others.
I picked up a number things from others sharing their setup. While I agree some aspects of these are repetitive (like using md files for planning), I do find useful things here and there.
I wrote a Cash flow tracking finance app in Qt6 using claude and have been using it since Jan 1 to replace my old spreadsheets!
https://git.ceux.org/cashflow.git/
I built a Erlang based chat server implementing a JMAP extension that Claude wrote the RFC and then wrote the server for
Erlang FTW. I remember the days at the ol' lab!
i have no use for it at my work, i wish i did, so i did this project for run intead.
look at Show HN. Half of it is vibe-coded now.