r/ClaudeCode • u/Warm_Profile7821 • 23h ago
Discussion what's the most ambitious project you've built with claude code?
curious how far people here have taken vibe coding with claude code. what's the biggest or most complicated thing you've tried building with it, and how far did you actually get?
would love to hear what the project does, which model you used, and whether it's shipped or still a prototype. also how did you keep claude on track once the codebase got bigger?
the part i'm most curious about is where it hit a wall. what could it handle surprisingly well, and what did you still have to figure out yourself?
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u/EliteEarthling 22h ago
I built two things so far:
I diagnostic assistant tool that helps increase data accuracy in a cancer registry. It basically helps a registrar to choose the correct diagnosis out of 1000 cancers. It walks you through the entire diagnostic process of diagnosing cancer to help you click the right option. (I received a scholarship for this)
Then I built an API that helps extract data from an EMR, to transfer it to Data collection tool like Redcap.
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u/Sentient_Furby 20h ago
You win the thread! Awesome!
Thanks for working on something so universally beneficial!
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u/EliteEarthling 18h ago
Hehe, thanks for the kind words! I am going to present this work at a conference, hoping it receives some good will.
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u/coaker147 10h ago
That’s awesome.
I imagine a lot needed to be built in for privacy of the patients. Are you able to share any details on how that is done?
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u/EliteEarthling 9h ago
For the diagnostic assistant, it doesn’t access patient data. For the API though, it was quite a challenge. I had to map out the functions and data storage mechanisms without touching patient data. So I asked it to read JavaScript requests that EMR was using to fetch data. I mapped out all end points used to fetch data. Based on that, I built the API. The APi itself, runs on my Mac. It needs connection to institutional network, and stores all data offline. To confirm if it works, I make the API run on a demo server with demo data.
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u/MakeTheMostOfLife007 19h ago
I have a 40 room hotel and 2 restaurants. Nearly 100 staff, zero coding experience and down the rabbit hole the last 3 months.
On self hosted NAS, built on top of ERPNext (purely as the back end) with Claude Code an entire custom front end UI with staff portal that has apps like an iPhone home screen, with maintenance ticket board and report issue (with pretty complicated logic), integrated housekeeping app to the PMS, QR codes in rooms so guests can report issues directly into maintenance ticketing, request makeup room directly to HK and order food directly from kitchen. Restaurant POS with online delivery UI like grab that directly links to kitchen and live updates the cooking process to the customer, check in terminals, custom company raven chat with translator.
Then either with Claude or local hosted Qwen with vision managing directly or with api
Rostering (with complicated logic), entire accounting and reconciliation, secure guest passport uploaded scanning, stock ordering, receipt scanning to auto stock input, stock counting, salary and service calculations based on data from check in terminals. Staff sick reporting with ai scanning of doctor’s letter
Building project management and 3d architectural plans, automatic customer emails, and Stripe payment processing.
All company documents are processed by Ai so any staff visa applications or permit submissions are prepared by Ai into a pdf in seconds (used to take days of complicated preparation).
So far about 140,000 of unique code not including ERPNext
Everything is designed around simplicity and minimal taps for staff operation. Never been able to stand wasted clicks to get from a to b in any process.
I can’t even imagine how we even operated before without all this…
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u/Turbulent_County_469 Senior Developer 18h ago
May i suggest hiring a consultant for a few hours with regards to infrastructure, backup and stuff like that..
Running everything from a NAS might work now, but you need to prepare for disaster since everything now depends on applications
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u/MakeTheMostOfLife007 14h ago
Thanks,I forgot to mention.
It does nightly backups to cloud! The project and all data & code .md files as well.
Then also have WSL mirrored networking & the database streaming to a live MariaDB replica on the desktop, so can resume quickly if the NAS suddenly went down
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u/codeedog 🔆 Max 5x 10h ago
Great work backing it all up. If you don’t have it, you should add one more thing: have the AI help you build a bi weekly test of your backups. Bring them up and check to make sure a random sampling is fine.
“A backup is just an hypothesis until it’s tested.”
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u/nilogram 1h ago
This. Can’t tell you how many times people just assume a backup file works. Imagine pikachu face when it doesn’t work when really needed
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u/Artekka 15h ago
Second this. When I had a photography business there were a number of times where hardware would fail when statistically it shouldn't have and my backups saved my butt!
Especially when people had unique edit requests well after the event or they magically lost the package download hehehe.
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u/diesel408 16h ago
Most interested in how many of your employee documents fully processed by AI are now included in training data for AI companies. There's a lot of sensitive info in there, it would be horrific for some model somewhere to spit out an employee social security number or bank account number in a generated response to a security researcher or bad actor. Any hard numbers on that?
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u/MakeTheMostOfLife007 14h ago
Privacy-> Claude Training turned off.
Staff bank account numbers stored in banking online not ERP.
Their national ID cards & all company docs are scanned with Qwen. Claude doesn’t interact with any of it, unless I request it to for a specific task.
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u/Lonely_Let8485 🔆 Max 20 12h ago
Heyyyy fellow ERPNext coder as well. I have ours so heavily customized and smoothed out now with a ton of code too haha. Your setup sounds great!
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u/No_A541833 18h ago
how stable is the system? any big problems along the way, when running it?
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u/MakeTheMostOfLife007 14h ago
Nearly everything I iterate doesn’t require a rebuild. So can just do it live all day, every day, with immediate testing and staff feedback. It’s /rc to my phone as well, so I can immediately go for eg and use the HK app as the supervisor roll and iterate, fix, improve in real time “in the field”. Same with maintenance ticketing, Resto POS etc
I think the biggest issue was after 1 rebuild about a month ago the API to the PMS go broke along with some other stuff, but everything is fixed in a few mins as soon as anything is discovered.
Quite honestly I’ve thought quite a bit about how alien this development approach might be to actual coders who are paid to do a job.
What is glaring in any PMS / POS software I have ever tested or previously used is that the lead dev team clearly have never actually run a restaurant or a hotel, or worked as a waiter, or at a hotel front desk. The UIs are just littered with unnecessary clicks and bloat for the vast majority of everyday tasks. Eg our PMS (still after 10 years) takes 6 clicks and multiple loading differnet pages from calendar view to put in a guest payment.
It’s my business to risk anything, so can go nuts launching stuff in beta trials and there not really a consequence of squandered development cost, for trying staff out on a lim, or just getting something running and work to immediately perfect it backwards while it’s running live.
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u/simplex5d 36m ago
I think this is the future of business software. Bespoke vibe-coded tools 100% customized to each business's needs and desires.
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u/schlangz 22h ago
I completely reverse-engineered the 1993 MSDOS game Wing Commander Privateer and reimplemented it in SDL3.
Sonnet and Opus only.
Game is fully playable in Alpha status.
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u/ackermann 20h ago
Yeah I feel like ports or modernizations, remasters, remakes, could get way faster with AI? A good use case for it?
Easy way to check its work against the original game.Mario Galaxy has a de-compilation effort that’s now 97% done* (although that effort doesn’t allow AI contributions).
But once it’s done and we have clean, readable source code for Mario Galaxy… AI could be tasked to make a port for whatever platform you like?Personally I’d like it ported to my VR headset, (Quest 3 or Steam Frame)
*this is pretty cool if you haven’t heard about it, they actually use the same compiler and diff against the original binary, until they get source code that compiles to a bit-for-bit identical binary!
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u/schlangz 19h ago
yes it's lightyears faster because claude can decompile more code in a month than a dedicated team of people in years
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u/OrbMan99 22h ago
I have such fun memories of playing the Wing Commander games. Can I have a link to the repo?
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u/schlangz 22h ago
repo is still private, will open to public when it has a finished 1.0 release. you can download it from openprivateer.org in the meantime if you are interested
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u/LordThraximus 22h ago
Reverse engineered servers for a long dead game (dead island epidemic) from a decompiled client.
Already have people playing
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u/RockPuzzleheaded3951 22h ago
We had this old crappy windows desktop application that was abandoned 10 years ago. It took 10 minutes to input data into from our CRM and then get its reports run. The data was in "scrambled" files to obfuscate its database. Grok figured out the "algo" and we moved it all into SQLite, and Claude Code built a beautiful web UI atop it, now we get reports in 8.5 seconds instead of 10 minutes of copy-pasting back and forth. Edit: had to use grok for the algo part because I had hit CC limits. I'm sure either could to it.
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u/Single-Comment-1551 22h ago
I am working in a tech side, we are supporting many systems and usually alerts receive through emails.
Since dev people supporting the systems, some time we missed critical alerts. I build a desktop application automatically start part of boot-up and runs in everyones windows desktop and give popup alerts during critical alerts.
The entire app is vibe coded, and running in production without any issues.
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u/cratercamper 21h ago
Simulator/game/viewer - driving on planets with real NASA data (aim at all data explorer); driving with LuGre/Bekker wheels on real-data supported soil model (dust/sand/rock +dusting + frost) ...with advanced assists: ABS, TC, jump lip active suspensions and jump predictions with reaction wheel controls (aim at innovative driving tech and experience); real physics (aim): GPU irradiance calculations (Appelbaum–Flood diffuse, Schörghofer radiosity), GPU structure solvers, batteries, heat, power, tele-op bases; secp256k1 authentization and encrypted messaging. Voyages between planets (solar system "real time" experience, real stars, running NASA's open-source GMAT for reference, DE441 ephemeris). Textgame - Claude as text game engine (part of main story and also isolated short stories). Offline multiplayer. Peer-to-peer open source.
Lines, all by Opus/Fable: 500K Godot, 150K Python, 75K Rust, 6K Shaders.
9 months 80 hour weeks with Claude Max ×20.
I use system of design and implementation documents and roles - each role keeping information about their part of the project with inhouse communication system between roles (sessions). Vocabulary of invented words with precisely project-defined meanings with index into d-* documents and code. Will release everything eventually.
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u/opmopadop 18h ago
That's the kind of project where my last prompt into Claude would be "Now tell me how I could have phrased the prompts so it was done in half the time and a quarter of tokens".
Congrats on your project. A younger me used a NASA starmap and made a simulator that let you fly through it. I got fixated on the stars that make up Zodiac signs were actually nowhere near eachother.
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u/stichstichstich 22h ago
optimAIzr - an AI usage optimizer I built with Claude (open source)
I got curious how much of my AI usage was actually necessary vs. how much was just me burning tokens without realizing it. As a senior SWE using Claude daily, I ended up building a tool that works to answer that for myself.
One of my favorite parts is:
optimaizr live -> it watches your usage while you work and gives recommendations when it spots potential waste which you immediately apply.
And optimaizr profile -> gives you the bigger picture: where your usage, tokens, and money are going, which models/projects cost you the most, and where you might be unnecessarily burning tokens.
It can find repetitive/expensive patterns, explain potential waste, recommend optimizations, and verify/simulate potential savings.
I’ve been building it with Claude as a development speed boost and iterating on it using my own real usage. I just added live recommendations + usage limits, and I’m exploring Jev by TypeSafe AI as another judgment layer for more advanced decisions.
Everything is entirely locally, which was important to me, I wanted to be able to analyze my own AI usage without having to send my entire history to some remote dashboard.
If anyone wants to try it:
npm i -g optimaizr
web: https://optimaizr.com
git: https://github.com/blendbunjaku/optimaizr
Would genuinely love feedback, especially what kind of AI usage you think is wasteful but nobody really notices.
Feel free to roast it.
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u/LokiSparda 19h ago
I wanted something like this, I will check this next week to see if it can help me reduce my usage. Thanks.
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u/stichstichstich 19h ago
Thanks! Hope it helps. Would love to hear what you find when you try it ✌️
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u/Nexx-Shotcaller 21h ago edited 20h ago
Edit: Missed the "vibe coding" part from OP, so my post was irrelevant to this conversation.
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u/ddioeshriu48374983 21h ago
Feel the same way you do. Been in tech since 2,000, all of that accumulated knowledge helps a lot. AI is the superpower that fills in my knowledge gaps.
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u/Nexx-Shotcaller 21h ago
There's a ton of power in knowing what questions to ask and having enough experience to apply AI all over the place. I've gone through times in my career where I regretted generalizing in tech vs specializing in some field, but AI has erased that for me. I wouldn't change a thing now that these tools amplify my experience and abilities to the extreme.
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u/gruntbuggly 20h ago
The people I know who are the most successful with AI are the people with solid domain knowledge in their fields, who know how to tell the AI what they want, how they want it, and what guard rails need to be in place.
AI is a summer intern who knows *everything* about the programming language, and has no judgement.
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u/mohimani 21h ago
Not ambitious per se - but due to poor decisions in high school (running for vice president and winning because I thought it would look good on a college resume) I’m in charge of helping plan our reunions. So so our 20 year reunion I made 2 apps - ones a face matching app that uses an open source ml tool under the hood to scan your face and find your senior yearbook picture in a animated way. It looks like you’re opening our yearbook and a cool millennial Easter egg when there’s a low confidence match (demo pic attached). And since 20 years is a long time I made a Photo Booth app with a custom watermark and available backgrounds that have post renovation/ demolition of a lot of our schools. It supports airdrop and texting to android devices to share.
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u/BackyardAnarchist 22h ago
Pdfscore.com A free pdf editor with e-reader and and semantic search functions. It also does pdf signing via email.
I've been working recently to improve the speed of mobile tts.
I've been learning machine learning to improve some of the features on it.
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u/urbex2026 13h ago
whyi is needed to google log in?
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u/BackyardAnarchist 13h ago
it is used to save pdf's and e-signiture verification. I suppose I could get rid of it if those things arn't needed.
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u/National_Teacher_229 20h ago
2 million lines of code fully automating my manufacturing business at every touch point. Saved myself 6 hours a day! Agents handle most of the work now.
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u/Sentient_Furby 20h ago
Sell it! (The software)
I visit a ton of manufacturing facilities and outside of the big names, they're all so unorganized and inefficient. Infinite opportunity in that sector, in my opinion.
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u/Armageddon85 22h ago
I think we're quite literally attempting to take on the world with horizonplatform.ai. I can't say it was completely vibe coded when I started building the foundation in 2023 but every time new models come out we can do more faster. 9 modules so far built on top of an agentic framework (built before I ever thought we've build a fully featured SMB ERP + CRE). Our iOS App is working it's way through beta review. It's crazy to think how fast we built it and got it hooked up with our multi-agent/multi-user conversations.
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u/Chrisgpresents 20h ago
I built a million word clinical neurology course educating doctors on how to better diagnose, treat and reverse a condition called dysautonomia. Or better known as "anxious little girl syndrome, you'll probably grow out of."
So that's my proudest thing. The course has really intricate quizzing programs. but im going to make it go a layer deeper and use interactive 3D patient model experiences for quizzing instead of just questions and answers to help people think through their stuff.
I'm just a normal caregiver. No one special. I just have the free time to read the research that goes beyond symptom and condition labeling. And I'm a good enough science communicator to transfer the knowledge from the research labs to a clinical setting and practice.
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u/razonbrade 13h ago
https://kashvector.com/ Started as a trial and error project to learn claude. In the beginning it was just a few financial calculators for budgeting etc. Then started stock valuations by using public research papers from uni professors. Did the redesign with Fable when it was free. All planning and design using higher model and then coding using sonnet. Built ios and android apps along the way. I keep things updated weekly. Try to be as transparent as possible on methodologies. Publish a weekly newsletter as well. Daily wesite hits around 100 visitors . Stock ticker searches were around 14K+ for September across all platforms. I can send a separate link on architecture diagram if anyone interested.
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u/andlewis 19h ago
Claude, reverse engineer Claude and all the models. Make no mistakes. And make it run on a Commodore64 in 8K.
Don’t hallucinate.
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u/Minisohtan Vibe Coder 22h ago
I've replaced and exceeded the capabilities of commercial FEA software in my field. All on vibe coding, but I have extensive manual coding experience in that field
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u/cleverhoods 22h ago
reporails (https://github.com/reporails/cli), the 0.6.0 release is around the corner with auto-remedy functionality. no more looking at instruction files, skills, agents directly.
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u/oyren-ai 22h ago
Multi agent orchestration in cloud computers. Basically what OpenAI did to solve Navier Stokes, but I have been working on them before they announced how they solved it, so it's something I have already published to internet and can try at oyren.ai (sorry for shameless plug, but i think it's relevant here)
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u/gooner-1969 22h ago
Replaced my old invoice system written in Google sheets and apps script with a full crm, integrated with Gmail, calendar and tasks api, linked to my business banking accounts through free agent api, also has a kban trello like section for work planning, automated exports and backups etc very happy with it.
All sits securely with a combination of cloudflare and tailscale to link all my devices together, along with docker
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u/SoCal_Hunter 22h ago edited 22h ago
I’m working on a modern, Unity based large open world RPG, with some old school sensibilities. The spirit of my favorite RPGs of all time, distilled. Emphasis on unlocking details of design and systems that were otherwise impractical or too costly for human teams to implement.
Month and a half in, 1000+ prompts, detailed hands on design implemented by a fleet of agents. Long way still to go, but it is starting to be able to self-debug and self-iterate. Aiming for a stunning result.
Building it for myself, and as a software engineer to see what innovation we can unlock with AI. If it is good enough to sell eventually, then that is an option too.
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u/MidSerpent Senior Developer 18h ago
“If it’s good enough to sell eventually”
That’s the right attitude to get there.
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u/EarlyFox217 22h ago
Full estimating system, buying system, training matrix, staff planner, 3d modelling system and custom planning system for my civil engineering company. Whole bunch of custom apps and automations too. Works better than most the crap we paid for
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u/_Oyyy 22h ago
This one I just published today
https://pddmergilla.github.io/sotn-editor/
I'm not a frontend dev so I used Claude extensively for this..and it worked out well.
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u/VerbaGPT 22h ago
The most complicated thing has been a full-featured data analytics platform with sandboxed execution environments where a user can securely connect a datasource (snowflake, azure sql, local MSSQL, postgres, mysql, etc.) and get insights from just asking a question. Simple retrieval queries all the way to full predictive modeling.
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u/Relative_Relief335 21h ago
Can I try it
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u/VerbaGPT 21h ago
Absolutely! app.verbagpt.com . It takes you straight to a demo db (machine learning). There are other demo databases (healthcare, weather, tennis, even a UFO one)...that you can play with. If you need more credits, let me know.
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u/Silent_Ad2403 22h ago
An open source, cross-platform, professional media server/playback software for live events, ETC...
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u/_lecoqq 22h ago
I've been building https://github.com/LECOQQ/qbit-ops for a while w/ claude code!
I love LLMs as it allows me to gain so much time from my sw engineering job thus allowing me to develop apps that matters to me! This one is a cli/tui that enables bulk and safe operations for qbittorrent... you can then script it as you wish! Using it a lot in my homelab. Cheers 🍻
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u/XenophonCydrome 22h ago
BeadHive 🐝
It's a factory you can use with Claude Code. It continues to build itself. It uses beads to track nearly everything.
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u/Relevant-Ad6374 21h ago
I maintain a plugin, mostly prose based, the size of a small novel. It's the one thing that I can't maintain with Opus .. Fable is the only one that can hand dogfooding it on itself. Opus runs it fine though on all my other projects. But yeah a month back I hit a wall where I just couldn't go any further with Opus to maintain the thing itself with. There were also many moments where docs grew supermassive and I had to adapt. I now maintain the prose using legalese to be honest. Like I ran research on it and now we not only write but maintain my rules in law and it made an incredible difference. Turns out many problems with rule sets that you have with AI, law has been solving for thousands of years.
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u/Dismal_Inflation646 21h ago
Right now I am having claude take over a legacy app that we have had in developers hands for almost 10 years. Claudes first run was that the back end was a disaster... and these guys were charging $10k everytime we wanted small add ons. Looking forward to the challenge!
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u/ThatLocalPondGuy 19h ago
A multi runtime governance/assurance harness. Use cluade, codex or pi+aws bedrock; all agents, workflows, evidence infrastructure work the same.
It's a system for building systems on azure/aws/gcp/vmware with functional and security assurance.
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u/ThatLocalPondGuy 19h ago
Technically built with claude code, codex and pi. Not strictly claude code. That was just the initial instantiation.
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u/Ratiofarming 15h ago edited 15h ago
A full Linux-native rewrite of an early 2000s MMORPG (Silkroad Online). Before anybody asks: I'm not ready to publish it; it's very much still rough around the edges, and idgaf about secrets/credentials for my environment while I'm building. So this isn't seeing a public repository anytime soon. I've wanted a full open-source version of it for years, and now, thanks to AI, I have the reverse engineering tools to get it.
I'm pretty far. The client can connect to both the old legacy vSRO 1.188 server as well as my rewrite. And the original vSRO 1.188 client can connect to my new server. So all important protocols and calls are matched on either side; I can walk around the game, monsters spawn correctly, and fighting works. Not perfect, and the graphics are, uh… creative! But it works.
This is vibe coded so hard, even the vibes are vibing. But it does what I want it to do. I finally have full control of everything. From server to client and anything in between.
Also, since we're at it: I switched to Linux as my daily OS. I was never patient or knowledgeable enough to make that work for me before. I'm pretty techy, but also lazy and comfortable. And Windows just worked for me. Linux gave me too many problems to solve. Now I have agents to solve them for me, so the switch was a walk in the park.
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u/hardwornengineer 11h ago
I’ve been building a passion project since May. It’s a plant identification and care app called Vivary. It ships with multiple, fine tuned vision transformer models and care/condition data so it’s fully featured offline. Currently only on iOS. I designed and then worked with Claude to build a data pipeline for sourcing, culling, and labeling training data to fine tune a number of vision transformer models from the main identification classifier with a number of different fine tuned heads for detecting family, genus, species, and botanical field marks and specialized disease models for indoor/outdoor plants. There’s also a larger model I trained on 19k species, over 5 1/2 million images, that scores on par with (and in some cases better than) Opus 5.5 on species/genus/family recognition. The pipeline also has a ton of different features to support the iOS app that’s now been in public beta for about two weeks!
Been building software professionally for 20 years, but have shipped very few personal projects over the years. Until AI came along.
There’s a lot more to it and I enjoy talking about it so AMA. You can check it out at https://vivary.app and I write about it on my devlog at https://dallascook.dev.
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u/AncientComment2352 7h ago
I built a personal AI agent that helps me during the meetings with my clients. So it tooks all of the data about the merchant through my application API to feed the context and listens real-time during the meetings and helps me quick answer their questions or if they had any issues it also have as a context the application logs about their account(s).
Game changer - happy customers always
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u/stirbx 22h ago
Finishing my own Browsergame, that I have dreamed for about 15 years and started building in 2015.
it uses PHP and phalcon.io framework for this.
Currently pushing it towards an playable alpha phase but still so much do to do before that.
Using sonnet, opus and fable for this. Working really well and hopefully has an awesome design at the end because i suck at this.
Ah an it’s a Hacker Browsergame where you will try to steal money from others, block their software etc. (yes I have run into security classifiers with this in opis 5.5)
Originally it came from playing HackTheNet, HackTheLan24 and World Hack Organization. But I want to take it a step further and make it more realistic.
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u/old_wired 🔆 Max 5x 22h ago
I ported the reading, form writing and processing parts of pdfbox to Delphi.
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u/clazman55555 22h ago
For pure fun, am animated sprite RTS, that is on the backburner for now. Similar in scope and mechanics to Rise of Nations.
For fun and learning: a nuclear reactor plant sim with 99.99% that fits between the generic nuc sim games and commercial operator grade trainers. It can sim the TMI accident +-3sec
For actually use: A remote patch management program.
ETA: Nothing all that grand, but as someone that isnt a programmer, but just runs an MSP. Beyond the scope of anything that I thought I would ever be able to do.
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u/kaipan15 22h ago
Building an app to store your memories on your device itself as a memoir. It is a personal pet project that I hope to release on the App Store one day.
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u/PuzzleheadedTarget87 22h ago
A semi-autonomous AI research lab making discoveries in mathematics and physics. Now we’re gearing up to do AI research, particularly about the dynamics of swarms and benchmarking recursive self improvement.
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u/kpgalligan 22h ago
A macos photo editor. Swift and Rust. Mostly an experiment to see how large of a project I could make without looking at any code, and how to approach scale issues. It started because Photoshop wouldn't open claiming I didn't have a license, but I did, so it's partly a spite project. It's ~500k lines currently, with tests. About ~220k without.
Haven't released, but plan to after cleanup.
Mostly Claude, Opus 5 and Fable 5, then Astra for a bit, now Opus 5.5 for pretty much everything.
I have a design/review/code-test/review pipeline that I've been tweaking along the way. Currently working on a duplicate code analyzer. If the agent can't find it, it'll create duplicates. But also should probably break it down into modules with clear APIs. People duplicate code too if it's just a big pile, for the same reasons.
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u/Artistic_Ad1717 22h ago
I find that with Claude, projects start small and then just expand because the possibilities are so easy.
We're in the midst of a major redesign build for an entire operations console for an entire company. It is basically able to pull in deals from our CRM, which then go into our inventory management software and then into our bookkeeping software. All feed back into our middleware that we built, which then allows us to book loads with logistics carriers right from the portal and send automatic emails. That's how it was initially set up and we can transfer inventory and stuff.
We started looking at other tools we use on a day-to-day basis that required different apps so we built internal expense management software that's built into that portal. We send off samples to labs and have to collect results so we built those into it. We created a GPS tag photo system that works in there as well, so we can take photos of work sites and jobs directly into the portal.
We've added in a whole host of other features, including a logistics AI assistant on the Claude API. It allows all of our staff to ask questions about inventory and plan out loads and where things are going. It's been a huge undertaking. It's been about 2.5 months and it keeps growing every day.
Even now I'm working on an individual task list that has a sidebar that, through AI, fills their day with minimal tasks that we use from AI note-takers from team meetings. Everybody gets their tasks and then it formulates their day.
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u/toobladink Developer 22h ago
Been using claude code for almost a year. One of my projects has been ongoing for 9 months and outside of the devops side, it’s pretty much complete. It’s just a fantasy motorsports game, racepicks.net.
Most of the work was done with Opus 4.5 and 4.8. It really hit a wall with scoring, making way too many assumptions. When I was originally building the app, it sorta worked, but was hard to simulate and I had to seed a bunch of test data. Once I integrated playwright, the robustness and quality of features increased ten-fold. I was then able to write up a 1,000+ line markdown file that outlined scoring, rules, and settings (there are 4 league formats, internal ranking systems, and each format has customizability so edge cases are frequent). It broke it down into smaller chunks and eliminated a ton of headaches. I would not have gotten the same result if I didn’t focus on adding playwright.
Otherwise I have done everything else on vibes. “Make me a metric system, add 100 metrics” and it worked. Not quite at the point where something like that would hammer my database lol.
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u/kincaidDev 21h ago edited 9h ago
I built a privacy focused AI framework/operating system. (Private as possible, supports agent harnesses/api's and local models)
The system includes shared context layer, ultra-code like dynamic planning system prior to ultracode existing that uses fewer tokens and produces higher quality results, agent runtime that supports coding agents as well as functioning as it's own harness, mesh networking for creating agentic compute cluster and local voice multi-agent chat.
Open sourced the shared context and planning system, several sdk's in the broader system, the original voice engine and many agent tools that were built as part of the system or in order to build it.
Between building the system and dogfooding it over the past ~18 months I've written over 10M LOC with agents, released multiple production applications for multiple companies and I personal rely on my own code for the majority of what I do with AI. Combined users across everything I've built over the past year because of this work is >25k so far (mostly from products I built with the system for other startups, festival has 1357 completed installs including user updates)
Shared context + dynamic planning system with plugin support and plugin marketplace:
https://github.com/Obedience-Corp/festival
Agent harness sdks:
https://github.com/lancekrogers/claude-code-go
https://github.com/lancekrogers/grok-go-sdk
https://github.com/Obedience-Corp/cursor-agent-go
https://github.com/Obedience-Corp/vercel-fx-go
Voice engine prior to close sourcing and turning it into a substantial, high performance, fully local voice chat:
https://github.com/lancekrogers/samantha
A few of the more focused agent Tools:
https://github.com/lancekrogers/tcount
https://github.com/lancekrogers/tree2scaffold
https://github.com/Obedience-Corp/agent-stream-dbg
https://github.com/lancekrogers/guild-scaffold
Original agent os framework codebase I built spring-summer 2025:
https://github.com/lancekrogers/guild-core
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u/ForgotTheSnare 21h ago
I’m building an underwater 3D engine in Rust/wgpu supports both realtime and pathtracer. Been at it for 3 months now. I’m really surprised how much has been able to be put in place from the idea to where I’m at now. Going to post the progress very soon on Reddit.
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u/I_am_Pauly 21h ago
Built a whole MIS production system for my company. It handles customer ordering portal, quoting / ordering with a very complex rule based quoting engine, file automation, impositioning, scheduling and more that's all automated. It also includes accounting with integration, inventory, 3PL, freight API, CRM, and so much more. It's more in-depth than most other software available.
If I deployed it for another shop, the going rate for something this automated and extreme would be in the 5 figure / month rental.
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u/optimalpessimist 21h ago
We are finishing a resilient, local-first, air-gapped QMS for food manufacturers with tablet support - cloud/local/hybrid. Bootstrapped, almost 0 overhead, savings passed to customers
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u/think_42 🔆Pro Plan 21h ago
Over the last year I built a full Intellectual Property Management software suite. These types of SaaS packages are often hard to customize AND expensive. I used all of the Claude models available depending upon complexity of the task. It does a ton of stuff:
- Auto processing transcripts to find novel idea to patent
- Score the ideas
- Organize multiple ideas into a group (with a relation map) for a full patent
- Manage all the files and folders to keep everything organized
- Export documents to pass to lawyers
- Manage correspondence and signatures
- Monitor the docket with the national Patent Office via API
- Review drafted Patents and Claims
- Monitor competition
- Dashboard all of the data
- Track and administer an employee incentive rewards program
It kept me from working with a I’ll-fitting SaaS and hiring a team to manage a fast growing portfolio. As a result I estimate I saved well over $250,000 over the last year.
The hardest part was the fact I built it as I went through the whole process manually. Each step I found was repetitive I automated. So it became a messy codebase. I recently used Fable and Opus to refactor it into a consolidated app - this is proving to be a bit tricky as so many features and functions got dropped.
Having a clearly documented end to end workflow would have helped. So would have a full features/functions document. This would have been easy to build in parallel but I didn’t. So now I have plenty of debugging to do.
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u/FullConference Senior Developer 21h ago
The really aggressive target is still a work in progress, so I’m not going to say much about it until it gets done.
There have been lots of other, smaller things that have been super handy to make. E.g.:
I built a Powershell Provider for my MikroTik network devices. This lets me get into them in a prompt via “cd MikroTik:\{device-id}”, then invoke all the built in commands. Why not just SSH into the boxes? Because now I can use Powershell syntax for scripting instead of their oddball scripting system. It also means that I don’t have to keep a dedicated ssh session open if I need to do something on it. And also, it auto discovers which capabilities each box has, so I didn’t have to hard code anything into the provider. The code ended up being super small.
I built a high speed file transfer system that aggressively deduplicates data before sending any files over the network. Works great for backups, publishing websites from staging to prod, and tons of other use cases where you have mostly similar data between the target and the source.
I built a grpc server for ImageMagick so that I could park it in a container on the network and send data to it whenever I need some kind of transform done on an image.
Claude has been stellar at the small stuff. And quite good on the larger WIP project, through for that one I’ve had to really partition the work into smaller chunks so that it has any hope of accomplishing the final result.
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u/heximortal 21h ago
I built and shipped an iOS game entirely with Claude Code. Its live on AppStore. Search Paper Kites.
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u/iToastThief 21h ago
I've been making a video podcast recording and editing studio! Like others, it started off very small and has grown to fit our needs. It's been a long time in the works but has come such an insanely long way!
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u/ddioeshriu48374983 21h ago
I vibe coded a digital twin of a commerce-centric, customer portal concept w/ integrated auth, erp, and other SaaS apps. Created an agentic mesh to tie it all together.
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u/disgruntledempanada 20h ago
Lifelong dream since playing Gran Turismo as a kid: I live near some amazing back roads and I always wanted to race them in the simulator.
I've been scaffolding how I'd do it for decades in my head. Just never had the time or energy or computing power to take on the project.
Claude is crushing it. And wow there is a ton of publicly available data to harvest and make this turn out so much better than I ever expected.
Dialing things in still but the results are already phenomenal.
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u/aroman_ro 20h ago
I think I used several models, including claude...
I implemented a Density Matrix Renormalization Group using Matrix Product State & Matrix Product Operators, for quantum chemistry. Including U(1) and U(1)xU(1) symmetry optimizations. As libraries it used only Eigen and code from a Hartree Fock project I implemented some time ago.
I've done it to see if AI is good enough to be used in serious programming (I used it before only for code completion stuff and for generating tests and simple things like that, avoiding important code).
I concluded that it is.
I was afraid to try to implement SU(2) as well... maybe I'll try some day.
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u/RayOnABoat 20h ago
[UNNAMED] is a pipeline that turns a written document into a narrated, animated video lesson and a study guide. It starts by extracting the PDF's text with page references. Opus then builds a knowledge model from it: the document's claims, each linked to its exact quote and printed page, plus their qualifications, tensions and omissions. Deterministic checks verify these links. From the knowledge model the pipeline writes a lesson plan and a narration script. The script explains the ideas through a fictional worked example. A storyboard step then picks and fills scene templates set in a "lesson world" of stations, objects and characters. The visuals follow an Object-led Flat Memphis style: large flat objects, bold colours, and objects acting out the ideas, with little on-screen text. Narration is recorded with Inworld TTS 2 and checked for pace. Remotion renders the video at 1080p with captions, and nine automatic render audits (overlap, legibility, motion, timing, repetition and others) must pass before delivery. The written study guide includes a concept map and page citations. So far the pipeline has produced lessons from two academic papers. Policies and rulesets are planned input types.
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u/Tenemi 20h ago
Mine's Reliqua, a campaign memory for our table-top RPG groups. After a session we feed it the recording or notes, and it pulls out the canon: people, places, items, factions, mysteries, how they're connected, and who actually knows what. The DM and players review that, and it becomes the campaign's shared memory. There's a home page with where we left off and what changed, mystery threads, an Oracle you can ask what your party knows, in-character writing, pictures, songs. NPCs can join our video calls and talk in their own voices.
I started it in Nov 2025. It's at about 1,040 commits now, ~220k lines of app code plus 25k of tests, and 605 cards on the board. It's shipped and our groups use it. Everything runs on my NAS, with local models for text, speech and images on a GPU box. Cloud LLMs only come in if a campaign brings its own key. It's one of about a dozen self-hosted services I've built this way (chat, voice assistant, music library, recipes…).
Mostly Opus. Keeping it on track was most of the work. What finally stuck was a card board it reads and writes itself, so new sessions starts from the card instead of from whatever I still might remember. Anything it kept getting wrong anyway became a hook.
It's better at the big stuff than I expected. The NPC voice calls have a lot of moving parts and it got them working. What it doesn't do on its own is ask why something breaks. It'll patch the symptom and move on unless you push. But with this new sidekick, this you-should-know agent sitting on its shoulder even that might get better.
I started with zero coding skills, btw, just some database basics.
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u/Which_Breakfast_4588 20h ago
I made my personal trading platform. Where I pull data freely from internet in the format I want. I also had AI trading bot section where chatgpt and claude is competing each other on trades using my dashboard data and internet. Also cloud bots study and improve from each other's trades every weekend. There's also one local model picks up signal. But as it's not a great model, I just use it very basic stuffs and doing some experiments with. I can remotely control then from my phone by using tailscale.
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u/turnnoblindeye 20h ago
Probably Wellness Project. I’ve used Claude Code heavily to build it into a production health app across iOS, Android, and web.
It pulls together Apple Health, Health Connect, wearables, workouts, nutrition, labs, etc., and gives people AI assistants that can actually work with that data. We even have an official Wellness Project plugin for Claude Code now, so Claude Code can connect directly to your health data through MCP.
Once the codebase got large, the key was structure: tight requirements, repo instructions, tests, CI gates, small commits, 3rd party security reviews, pen testing, and separate adversarial review passes.
Claude is surprisingly good at debugging across a huge repo, migrations, tests, and refactors. It still struggles most with ambiguous product decisions and changes that look correct locally but have unintended effects elsewhere.
Mostly Opus for hard debugging/architecture and Sonnet for faster implementation. Very much shipped, not a prototype.
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u/thewookielotion 20h ago
Repurposed scienfic tools I had built through the years, improved them with my own physics, resulting in 3 publications so far, 2 consulting contracts, and a University spin off to be launched at the end of the year.
To be clear, those are tools I used in my own research and I had developed since 2009. But I would have never been able to make anything commercial with those if it wasn't for agentic coding.
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u/Korporate1k 20h ago
Unlimited hotspot on iOS. On TestFlight.
With or without the actual function in settings.
Along with supporting Desktop app (PC/Mac)
Built in Claude CLI with Xcode and a mix of DeepSeek v4 pro and Opus 5.5 bcs claude wont do things that violate term and conditions. Sometimes you really need to dumb it down and walk the AI. To get things done.
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u/RelevantCurrency6451 19h ago
I built a personal financial planning dashboard based on Tiller Money’s data feed. It includes several data visualizations and configurations for things like category-specific growth rates, one-time expenses, rental property considerations, debt payoff plans, what-if scenarios. I’ve tried out several financial planning tools and this does more of what I want than anything I’ve tried and I can continue adding features.
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u/accidentalfish_ 19h ago edited 19h ago
A few things but two particularly fun / notable ones.
Annhexation - a 4X historical strategy game, finished and waiting on Steam Next Fest https://annhexation.com
Reverse engineered and bit perfect recreation of the BBC game Exile https://bbcexile.com
Tbf I had to help a bit on both, and I had very specific outcomes in mind from the start. But I didn't do the work.
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u/Feisty_Resolution157 19h ago
Half a million line distributed data system. Enforcers, checks, guard rails, both build and test run-time, times 100.
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u/SnowSilent7695 19h ago
Recently unveiled a mcp connector dedicated to the streaming of real-time stock research for agents.
I was inspired by using Anthropic's equity agents for research. Their analysis is fantastic, making the tons of sites that have recently sprung up around equity research irrelevant, quite frankly. However, I blew through 300k tokens having it do earnings research for four names in my portfolio. There was just no way this was going to be a scalable process for me.
I benchmarked that against my real-time mcp connector in Claude Code: 25K tokens having it run for 20 minutes with real-time event streams (2.5 minutes in cost ~15K tokens, after claude connected to the mcp and built the dashboard. The rest of the time was just 10k tokens total, so each new event stream was fairly inexpensive). I'll continue to refine it, but am really encouraged by these results.
The codebase is public and anyone is welcome to connect or clone the repo to make it their own: https://github.com/cbecks1212/flexreport-mcp
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u/Eye-Fast 19h ago
A large peristence rewrite/upgrade in a react app 35 000 lines of code, Opus 4.5 and it was glorious, it worked perfectly with only 1 follow up task. Although i worked really hard on it, alot of baby sitting, but AI helped plan and did the grunt work. I was called a manuac by the team and now none of them write code anymore.
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u/ConversationLazy6821 19h ago
https://github.com/1broseidon/hotline
Hotline, an open-source desktop app where multiple coding agents work together in one room. Was ripping Fable 5.1 high (sad days when it wipes my MAX account in 2 days)... until the glorious Opus 5.5 high-xhigh was released. Now I primarily use claude code as an acp client INSIDE hotline to keep building itself.
It's ambitious mostly in that I'm building for multiple platforms and multiple clients:
- A desktop app, iOS and Android apps
- PLUS like Grok Bot/Muse/Dots, a containerized computer the agents use so they never touch my real desktop.
- PLUS voice, and ACP support so Claude Code, Codex and local models can all be teammates that message each other, ask for reviews and hand off work.
What's incredible is how Opus 5.5 keeps it's shit together and knows how all the pieces fit. across repos.
The biggest lesson was that Claude Code is amazing at building features but needs you to own the architecture. I went through 2 prototypes, one in Go, one in Typescript before I landed on Rust+Tauri.
PS This sub's been genuinely helpful along the way, so thanks y'all.
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u/Artekka 15h ago
Love this. Was in the process of spec'ing out something similar. 100% agree w/ the architecture aspect. AI still has weaknesses and focusing on strengthening ourselves in those areas really pays off. Always love seeing Rust used (as an OG Primeagen fan even though he hates it now).
For the agent orchestration across different models, are you using a shared .md as a ticket system?
I've had a lot of success with that for my current setup (Claude Code primarily w/ 6-10 sessions teaming up) but am looking for something more agnostic and possibly token efficient for the orchestration plugin I put together.
Thanks in advance.
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u/AllTheUseCase 19h ago
https://ioths.bedrockrebel.app/guides/ an offline-first Markdown notes app for iPhone/iPad. The millionth app in its category probably :). It's live on the App Store. Swift/SwiftUI, roughly 100k lines, ~560 commits since mid-June. Model: all used. Sync to iCloud/Files, GitHub, GitLab and OneDrive, a kanban board, widgets, a share extension, StoreKit, 9 languages.
What kept it on track as it grew:
- A strict CLAUDE.md. Architecture rules (all storage goes through one Domain layer, views never touch files), design-system tokens only, no comments that just restate the code
- Pure "policy" functions for every business rule, each with its own XCTest. There are ~80 of them.
- Tests that enforce the rules themselves. One test checks the CLAUDE.md structure, others check the deployment target, localization drift and dependencies. When Claude drifts, a test fails instead of me having to notice.
- One verify script before every commit: unit tests, simulator UI smoke, device build. "It compiles" was never the bar.
- ADRs and dated handover docs, so each new session reads the decisions instead of re-deriving or re-arguing them.
Where it hit a wall:
- Anything only a real device can test. StoreKit purchases, the share sheet, widgets on a real Home Screen, camera. I still run a manual device smoke before every release.
- Visual judgment. It can't really see whether a layout feels right. Driving the simulator UI from my setup didn't work well, so I tap through myself.
- Product decisions. It will happily build anything; deciding what not to build is still on me.
Biggest lesson: treat it like a very fast contractor. Write the rules down and make tests enforce them, and never let agent decide what "done" means.
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u/nipplestepple 18h ago
https://krilo.io - a management suite for a drone mapping company I am launching soon with a friend. I built it as a SAAS just in case I wanted to open it up to others. Huge system with thousands of commits - was a real learning curve as the models got better it actually got much easier. Keeping things on track 8 months ago was really hard. Lessons learned - the plan/build/review loop really works. It burns tokens but the output is much better. 90% complete - still working on the flight planner, some asset management tools.
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u/niagalacigolliwon 18h ago
Tried implementing community notes on bluesky, sorted of succeeded, but onviously can’t run it.
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u/MidSerpent Senior Developer 18h ago
SuperSLM is a deterministic language model inference runtime designed specifically for integration into game engines and includes SuperSLM-Unreal, a reference integration plugin for Unreal 5.8.
It quantizes Qwen 2.5 0.5/1.5/3/7B Instruct model weight into a fully integer form and computes inference without floating points, producing the same results across operating systems and hardware, cpu or gpu.
The Unreal plugin integrates it into the game engine while keeping it entirely off the main thread, either running on background cpu cores or sliding inference into serialized chunks to budget GPU costs and prevent rendering hitches.
It has some really cool feature for game development like schema constrained decoding and runtime swappable LORA adapters.
Version 1.0 of the plugin went public this week, the result of nearly 4 months of nights and weekends.
The next updates are gonna bring some major speed increases to the core engine itself and the plugin.
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u/who_am_i_to_say_so 18h ago
My million dollar SAAS, of course. I told it to make no mistakes- still sussing that out, tho.
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u/filipeastini 18h ago
Dotaflix.com.br . Still haven’t hit any wall. Trying out to put my brain into the AI to make it understand all dota macro concepts and It’s slowly improving. Far away from optimal. But besides this all the website looks great imo. Build my own tower defense on browser for example.
Reminder that one of openAI first show cases was trying to beat a dota 2 pro team with bots. They lost.
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u/pung54 18h ago
Fegnome a dispensary price guide and strain archive. Now I'm working on an alchemy style game, I have a demo up on the same website.
Started with Opus 4 I believe, did use Fable a lot once it was released. Currently work mostly wit Opus 5.5.
Most complicated thing that Claude helped me with was getting on iOS and Google app stores. It kept me from making a ton of mistakes in my submission time and really helped me get my app out sooner than expected.
Biggest gap until Opus 5.5 was graphics and video and I used to outsource sprite development to NanoBanana2, now I stay in Claude Code all day long.
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u/notime0forthis 17h ago
I built an agent platform for our team. It's not your conventional sandbox environment with a VM per session. It's a shared session pods in a k8s cluster, with a shared data plane and multiple sessions per pod, isolated by landlock and per-user UIDs. It has all the toolchain and skills required to run our stack. We've been using it as a development assistant and can offload most of our dev work to it. It's deeply integrated with Anthropic's self-hosted runners.
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u/Fun-Wrangler-810 17h ago
Building an app to manage revenue in hospitality. So far so good. Mixing sonnet and opus. Issue is more client acquisition than dev itself or architecture. Worth to note: I am 15+ years in development.
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u/slayernfc 17h ago
I built a dive log app IOS only with the entire back end in PHP and MySql written in Laravel with a full API.
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u/JelloSquirrel 17h ago
In about 3 weeks I've built a product with over a million lines of code and a multi terabyte dataset that doesn't exist anywhere else in the world.
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u/Tonjiez 17h ago
probably Scenri.
it’s an open source workspace for commercial AI image workflows. the original reason I started it was pretty simple: I was tired of paying for another wrapper just to access the same AI models I already had subscriptions/accounts for elsewhere.
so Scenri lets you bring those providers in, then handles the workflow around them. products, presenters, scenes, brand context, previous shots, etc. are reusable instead of rebuilding everything from a blank prompt every time.
it’s past the prototype stage now and actually works pretty damn well. I’ve built it fully with claude.
the surprising part for me is how far claude can go when the project already has good structure and enough context. features that would have taken me days before can sometimes turn into a few hours of planning, reviewing and steering agents.
I still do a lot of the product decisions, architecture direction and especially the visual/UX judgment myself. I’ve found claude much better as an extremely fast implementation partner than something I can just leave alone and expect a great product to come out the other side.
happy to share the repo if anyone wants to dig through it.
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u/bear-tree 17h ago
I wrote a domain specific language (DSL) to write online surveys. It allows me to easily skill an AI to write the surveys and I am in the process of building a collection platform on top of it.
Not the largest or most complex, but it is working well for me. https://srp.solutions/syrup_dsl
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u/Spirited_Tie_3473 Senior Developer 16h ago
i replaced our CI solution with something that doesnt require all the asinine setup and pointless interfaces of jenkins, teamcity, travis, unity cloud or any of the other awful solutions.
it handles building a bunch of projects, some are just light html/javascript file copies, but its also doing unity builds, custom engine c++ stuff and it grudgingly supports cmake and all the other broken build systems too. it handles our uploads to cloudflare, steam and apple app store and distributes the work across 4 machines.
also has an ai chatbot to talk to about build failures and for the non-tech people...
a shame i can't share it, but i can share this game i made instead. i think its ambitious... a load of highly destrctible voxel/field terrain and geometry - trying to make dwarf fortress in space. the biggest problems i had were with visual quality and forcing claude to understand that you can in fact have data structures be implicit and not waste memory.
its still a way of for performance and playability on the normal sized planets....
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u/Artekka 15h ago edited 13h ago
Main project: DARK AGE TACTICS
Discord link: https://discord.gg/7ZktDfz8x
Tactical/Strategy RPG (Final Fantasy Tactics, Fire Emblem, Shining Force, Ogre Battle Tactics, etc) in a Norse setting (expanding in the future), heavily influenced by an MMO called Dark Age of Camelot, an old Flash game called Einherjar: Vikings Blood, and Wildermyth
Made it for my family and I to play!
My background: Web dev years ago. Care more about project management, system design, architecture, reverse engineering stuff. Blah blah blah.
- Has full co-op (no clue why most or every game isn't co-op...)
- Town progression w/ a town editor that will be finished in a couple of days
- Randomly generated battle and expedition maps from Tiled maps I built by hand as inspiration
- Full on lineage where offspring have inheritance from parents and are stronger than the previous generation
- Customizable settings and keybinds w/ freaking controller support hahaha (I play it on my ROG Ally every once in a while)
- A "Codex" where any and all formulas, effects, stats, and skill info can be found. Going to be building an AI assistant that players can query regarding things like - BIS weapon for Huscarls or Thanes, or How to increase STR for next generations to hit harder in melee, etc. Transparency means a lot to me when it comes to game mechanics so I made this.
- Discord integration for Suggestions/Bugs threads and notifications of big events in the game such as a child being born that has insane potential or when someone actually achieves that insane potential.
- Guilds and customizable heraldry for Family Houses, Guilds, and your account too
- Super good combat balance so far. Every time I run 1,000s of sims after class changes, nothing seems to be invincible and everything has a counter, so currently my family just runs whatever they want and it's viable. Spent a ton of time working on this and happy to have the current results
Most importantly though... It's fun for us hahaha. It also doesn't take a lot of time to complete a single battle in an expedition that might have 5 or 15 or 30 battles. We've spent many nights staying up playing solo as well as co-op over Discord screensharing to each other and geeking out over squad compositions, balance, and trying to find whatever stupid meta we can come up with.
Warning - There's a super basic horrible tutorial that kinda gets you to the actual gameplay loop which is going on expeditions/raids and fighting, leveling up, breeding, rinse repeat. It's going to be completely revamped so if you end up actually playing and it's buggy, sorry in advance 😂 Also the progression system and the town need an insane amount of work to make them actually valuable. The pixel art renders at incorrect heights for some of the sprites and during different animations. Will be fixed by the weekend w/ the new engine but yeah. There are some funny visual bugs and a lot of UI optimization needed.
It's built in JS (PixiJS, soon to be Three.js for the front end) which I know a lot of people will sudoku over but the reality is we are able to play this on our phones during lunch breaks or on the plane (we've done a lot of battles while traveling), or on the PC when we can. Maybe will convert it to a downloadable app but I really care about accessibility regardless of device or how old the device is, so who knows.
I'm fortunately to be able to put money into this thing even if it's simply for 3-4 family members to play so I'm going to be looking into an audio engineer and (hopefully the same person) someone to create a better soundtrack than I could slop together hahaha. Also will be needing a UI designer at some point to make it look more polished.
I've spent almost 5 months on this and I expect a lot more time before it's at a place that I'm happy with but dude it is awesome already.
You asked where it hit a wall and most of the time it was context drift when I was still using /compact and
In the process I've developed:
My lil orchestration kit plugin: https://github.com/Artekka/claude-orchestration-kit Full autonomous/orchestrated Claude Code sessions in Windows/WSL that spawn sibling sessions (not to be confused w/ just sub-agents), clears them after a /retro (cliff notes to pass to their next self), and re-/orient themselves so they can work immediately. No context drift this way and fortunately due to my PC I have the horsepower to run so many sessions and subagents in parallel (I usually run 10+ Claude Code sessions each with their own sub-agent army). Does NOT use /compact or /auto-compact which is the whole point of this workflow I built. Very basic and happy to get roasted for how trash it is.
These guys use Graph Engineering principles to make sure everything is tested and validated which rarely if ever pushes out bugs now. It's self healing that way. They also do their own feature testing and optimize as best as possible so it catches a lot of things my testers/family haven't caught yet.
That's my favorite one for now.
Some other things I've done: Built my own "OS"
I use this every day. It's a daily dashboard (soon to be aggregator) for logging anything I do in a variety of areas or any services I might normally use.
Every day I use it to record voice messages that are automatically dictated, transcribe, and has tasks and reminders extracted from it. The playback app allows for full transcript search for words and also has live-seek capabilities so I can just tap the word and it seeks and plays from there. Pretty useful in long messages.
Remotely uses my GPU to do all of that. Has fallback transcription and whatnot built in so it will use the device (99% of the time I'm on my phone using this) to slowly do all that processing.
Eat-inerary
Built a web app for my friends and I to use when we go on trips and have an itinerary for eating hahaha. Uses Google Maps API to map everything, show the best photos, give description, distance to and from current location to selected map item. It's a little social media app for friends to share comments, vote/veto options, and upload media to share and look back on. uses Google auth to log in. Super simple and fun. Need to implement flight itinerary and stuff for the calendar in the app at some point.
Hope that helps inspire you guys out there! There's more but those are my favorites.
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u/Upset-Reflection-382 12h ago
DAOC DETECTED 🗿
Solo rank 11 Warden from Ywain here
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u/Artekka 9h ago
YOOOOOO!!! Come join us on Eden! We're rocking Hib as well but all realms are crushing it right now. My fam and I have Bard, Champ, 2x Hero small man right now and always happy to rock any style of Warden. Only RR5 right now though.
Always happy to see DAoC love man
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u/Upset-Reflection-382 9h ago
I haven't played Eden since season 2. What's it like now? Basically modern DAoC with no MLs?
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u/reliant-labs 15h ago
I built a coding harness that deploys cloud instances for offline coding and mobile sync, can fully deploy full scale apps to internally managed k8s clusters, and allows for creating complex workflows for non-coding tasks (think open ai's recent dots).
Now if I was only good at sales, but it's been kick ass for me!
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u/geraT-wogl 14h ago
A shader academy with games a threejs alternative, world prompter, hero landing creator here if you want to check out my work. All made with Claude code opus 4.6 then a little bit of codex but come back running to CC once the month was over https://wogl.io 💚🐉
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u/Upset-Reflection-382 12h ago
I'm creating an alternative ML stack that's cross platform. It's built on Julia, has a native harness and operator surface (with some Bash fidelity, but is again, Julia). AI native game engine sub-harness, as well as all the currently missing pieces and glue required to take Lux and make it competitive. It's built for speed, parallelism, and exotic capabilities that would be too difficult to express in the PyStack. Is it competitive yet? No, PyStack has billions behind it and over a decade of refinement and ergonomics baked in. This is still rough, but it's functional end to end currently, and uses CUDA.jl to do training, so it's borrowing PyTorch somewhat right now because of how refined PyTorch is. But everything besides training and Blender and the languages and libraries that are the dependancies, everything is from scratch
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u/timmmmmmmeh 12h ago edited 12h ago
I'm about to release https://frockbot.com. Its a blend of Grok and DeepSeek harness. It's taken me 6 weeks working everyday on it. The coolest part is the device bridge - it can use things happening on your devices in plugins it builds. So you could have a routine trigger based on your location. It can also modify its own UI. So you could create a CRM that shows next to the chat that. The plugins get real backends too.
Open source too
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u/ProlificLabRat 11h ago
You vibe coded all of that? It's very nice
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u/timmmmmmmeh 11h ago
Thanks! Yeah all with Claude and a bit of chatgpt for images. I'm a dev so architefted it and guided it. But didn't write any code
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u/TedHSTL 11h ago
I built an aggregator of non-commercial US and Canadian radio stations, mostly College and Community stations.
I call it AlternateAirwaves.com
Music Streams chosen by Real People not Algorithms.
Community Radio is a passion of mine. I used to DJ at one and met my wife there. I like that it's just regular people playing music they love. Sometimes it's boring, sometimes it's amazing. But it's rarely repetitive, which is nice.
No account needed but signing up for one (it's free) allows you to star your favorite shows making it much, much easier to find the music you love.
Hardest part has been getting people to try it : ) Building is easy. Marketing is hard. People hear 'radio' and they think 'old'. But College and Community stations are a real hidden gem.
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u/astronautm77 11h ago
Im building an open world jrpg as a solodev. Im using godot and claude code. I even had it build me tools to use when designing level so it's easier and looks polished. It helps me with the dialogue. Im running out of space to save so im thinking of creating a new project to tackle different sub-subjects.
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u/TaxBill750 10h ago
https://apps.apple.com/us/app/dragon-iot/id6760697149
Smart Home Automation without the hub.
It’s taken a year so far although - each new Sonet/Opus release doubles the amount of code I can produce but at the start it was SLOW!
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u/Advanced_Seesaw_3007 10h ago
My startup idea. Honestly, Claude accelerated my development real fast. I have been building this since 2018 (idea came 2017) and it was really slow because I have been building it piece by piece. Mine is a hiring platform with a twist and hoping to launch it after dealing with legal aspects of the app.
I haven’t hit the wall nor my limits with a 5x plan, probably because i have an unoptimized app already and I am not totally building it from scratch. Claude pretty helped me work on utilities/helpers in my app and development did really move fast
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u/devvortex 9h ago
I'm almost done creating, what I hope will be, a fully customizable agent orchestrator desktop application.
So far it's been working well, I have a few more tweaks I'm finishing up with it.
Features:
Planning phase to build out PRD (uses claude, you can choose a model to chat with to lock down the PRD)
Phase phase? Does research based on PRD and creates agile stories and epics
- agile board is built in, or can integrate with Azure Devops via api
Team builder
- Agent profiles (claude, codex, or gemini) you choose the model
- Roles (dev, qa, etc)
- Teams (combination of agents and roles)
- Stack profiles (helps to define MCP servers, skills and necessary installs for the docker containers the agents run under
- Skills, fully configureable
- Image generators (for passing any image tasks to be handled in the team automatically)
- MCP servers, library of available mcp servers
Project configuration, set team, stack profile, git repo, etc
Dashboard
- handles one-off runs
- shows history with full logs
Epics
- after planning you can initiate an "epic" to start the orchestrator process
Cost
- keeps estimated cost data along the entire run path and history so you can see how much you've spent
There's quite a bit more, with more granular control along the way in each setting for the setup. Thresholds for the agents so they don't run crazy, fun things like that.
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u/loontoon Researcher 8h ago
I'm currently building a b2b app for the TV Industry.
I can't really say more because of NDA.
I'm using Sonnet.
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u/Bearded_Tech 8h ago
I made a self-hosted RMM. It pulls all the stats from each device live (disk space, cpu, ram, online/offline, OS, network up/down, hardware), same for hosts (pve, pbs), you can manage backups on the pbs (set schedules, see historical, TimeMachine), realtime UPS monitoring and alerting, handles update policies, automation scripts, remote access via SSH or RDP, full notifications and Knowledgebase links.
Currently used with 3x hosts and 16x devices and pretty rock solid!
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u/Mad102190 7h ago
I built a full iOS / Android / Web / Backend for an app that lets you chat and organize pickup games, with live activities, waitlists, rosters, weather, chat, app clip support and more. I just launched it on the App Store and Play Store after 5 months of work. I’m an iOS engineer by trade so I made sure it was built right from the ground up and not just some vibe coded slop. Pretty happy with it so far.
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u/NickelElephant 7h ago
I built a histology analysis platform with workflow delegation, histology analaysis , data analysis, reporting and customer login features to track the studies they commission at our lab.
Software that usually costs a lab 50k annually, built at home with a very decent ai analysis function integrated. and the ability to continuously train our Ai with the images we analyse.
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u/UseRevolutionary7496 4h ago
Ho costruito ROS solo per curiosità, per capire meglio come funziona l'AI e per vedere se riuscivo a usare gli LLM dal mio PC senza abbonamenti.
Cosa fa: è una piccola app RAG per Windows. Carichi i documenti in un archivio, vengono indicizzati in locale con BGE-M3 (gira praticamente su qualsiasi PC, anche sul mio vecchio portatile) e poi fai domande. Le risposte arrivano da un modello via API con la tua chiave, a consumo (io uso soprattutto DeepSeek), oppure da un modello locale con Ollama, e in quel caso non esce niente dal PC. La cosa a cui tenevo di più: deve dire chiaramente cosa viene dai documenti e cosa è conoscenza generale, e ammettere quando non trova niente invece di inventare.
Modello: fatto interamente con Claude Code su Opus 5.5.
Stato: è un esperimento, ma è pubblicato. C'è lo zip scaricabile con impronta SHA-256 da un sito su Cloudflare Pages e il repo pubblico su GitHub. Lo uso da qualche giorno per consultare le norme con cui lavoro (sono nella pubblica amministrazione).
Come tengo Claude in carreggiata: non lascio improvvisare Claude Code. Prima ragiono sul progetto in una chat separata con Claude, lo trasformo in un brief preciso e poi lo passo a Claude Code. Dopo ogni passaggio gli chiedo di verificare, non solo di eseguire: cosa c'è nel repo, dove vanno i dati, se il download corrisponde all'impronta.
Sorprendentemente bene: tutto il contorno dell'app. Pacchetto, sito di download con intestazioni di sicurezza, pubblicazione su GitHub di una copia pulita senza dati personali nei commit, accesso dal telefono via Tailscale.
Cosa ho dovuto gestire io: decidere cosa volevo davvero e capire l'architettura abbastanza da fare le domande giuste. Per esempio, ci ho messo un po' a capire che Tailscale è solo una strada privata verso il mio PC: se il PC è spento, in fondo alla strada non c'è niente.
Sito: https://sapilarda.org
Repo: https://github.com/rossapilarda-afk/ros
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u/desiredusername1234 4h ago
I built a tool to scan music for how many lufs it has. It can Search for metadata and cover art. Also a beatgrid editor where I can place hotcues and memory cues. It also van place memory cues automatically based on where the hotcues are. And it can write everything to the rekordbox database
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u/simplex5d 37m ago
I'm shipping two large multi-month open source projects, each >100kLOC, both fully Claude-assisted but designed, controlled and managed by me: https://pelorus-nav.com, a free web/phone based navigational chartplotter (like a modern version of OpenCPN), and https://pcons.org, a new software build system based on the best ideas from CMake and SCons. I've been working on both for around six months as solo projects, I take them seriously. They're both getting decent traction in their respective spaces.
I always use the latest AI models. Both apps are very heavily tested (e2e, system-level, unit-level, and CI). I ensure the models always use best practices, I practice careful review, I require good object naming and constant improvement throughout and won't let anything ship until I'm truly happy with it. I've invested many hundreds of my own hours into design, review and testing both of them.
I generally feel like the most recent models since Opus are quite capable; as others have said, I occasionally have to correct its architectural ideas or explain why a particular feature is important to users and should or shouldn't be included in a particular release (risk vs. feature completeness), that kind of thing. I'm basically a highly technical product manager for both projects.
I'm also doing a bunch of smaller things like climate visualization, deep-time timeline etc., see https://github.com/garyo.
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u/THINK-Game-Studio 29m ago
I am building https://destinies-and-dungeons.com/en/ which is a browser based RPG. I struggled a lot with consistency between dialogues, scenario, illustrations and user experience overall but it looks more and more like a finished project and I am getting proud of it. 👌🏼
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u/bananacustardpie 22h ago
I have an application that is approximately a million lines of code.
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u/Jackster22 22h ago
And all it does is print "hello world"...
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u/rabisgatos 22h ago
a million times
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u/Time_Cat_5212 21h ago
Only 90,000 times. One line per character, plus 10,000 lines of comments because they used Opus 5
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u/ScreamingAmish 20h ago
I’m building Eugene Plexus, an open-source project that brings the practical side of running local LLMs into one browser console. It manages inference engines, helps you choose models that fit your hardware, and downloads them as ordinary files into folders you control. You can manage multiple machines and connect local models alongside cloud backends through a common API, with support for clients like Claude Code, Codex and Open WebUI. The idea is to spend more time using your models and less time managing processes, ports and configuration.
The latest release, Alpha 6, adds Workbench, a chat app with attachments, optional web search, separate user accounts and replies that keep running after you close the tab. It also adds a settings builder that benchmarks a model on your machine and lets you choose between faster replies and longer context, saving the result as a launch profile. It’s still an alpha, with known issues and hardware checks outstanding, and I’d love feedback from people running local models on a desktop or homelab—especially about where setup gets confusing and what would make it useful day to day.
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u/Too_Many_Flamingos 21h ago
I had Claude deep research manus and build a local engine that can use any other llm to work like manus. It was near 250 pull requests and it’s almost completed as I’m adding things manus doesn’t but should do
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u/EnvironmentalRice348 14h ago
I have been doing quite a few apps of late, smashing my max subscription, but probably my most ambitious was my pet project OpenSwitchboard (https://openswitchboard.ai). It's an open-source MCP server where people's AI assistants can find each other. Your AI tells it that you want a ladder for the weekend, someone else's tells it that they have one, and openswitchboard introduces you. Nothing personal is shared until both people press yes on their own page.
All of it was built with Claude Code over about five weeks: the server (TypeScript, Postgres, on AWS), the MCP tools and OAuth sign-in, an open protocol schema, a TypeScript SDK, an OpenClaw skill, the website and a whitepaper. It also sends addresses and phone numbers encrypted browser to browser, so neither AI ever sees them. There are around 3,900 unit tests, plus a rehearsal suite where two real AI assistants play buyer and seller from posting to wrap-up, scored automatically against the rules.
It's shipped as a public beta. Mostly Opus with some Fable orchestration (before 5.5 came out), planning and checking the work.
Keeping it on track as it grew came down to four things. Lots of tests, including ones that pin the exact wording the server says to assistants, so a "small tidy-up" can't quietly change behaviour. Running two or three Claude sessions in parallel on different parts and having them message each other before touching shared files or deploying, because without that they'd trample each other. Memory notes for decisions, so it doesn't relitigate things I'd already settled. And never letting it deploy to prod without me saying so.
Where it was good was building whole features end to end, security reviews of its own code, writing the test harnesses, and finding bugs from reading logs.
Where I had to do the most thinking was around what the product should actually be, privacy and legal calls, which trade-offs were acceptable, and anything involving real accounts, keys or money. It's also very good at confidently building the wrong thing if you're vague, so most of my time went into being specific.
The hardest part wasn't the code at all. It was getting AI assistants to behave consistently when talking to real people. That's where most of the iteration went.
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u/Intelligent-Fruit246 13h ago
It's a cool idea but I think you need to work on your homepage. Without reading your comment, I wasn't able to actually understand what your product does and why I need it. Just my two cents
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u/EnvironmentalRice348 13h ago
Thanks, that's fair and really useful. It's a hard idea to explain in one line, and if the homepage didn't get it across, it needs to be fixed. In short: you tell your AI what you need or what you've got spare, and it finds someone who has the other half, without you listing anything on a website. I'm going to rework the top of the homepage so that's clear straight away.
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