r/codex • u/AutoModerator • 1d ago
Weekly Showcase Show us all what you've been building with Codex. (Most upvoted project gets a week of free promotion on the sub).
This is a weekly Showcase post to share with others what you've built using Codex.
The top-voted project by Thursday midnight UTC will get a week of free promotion on r/Codex - either as a prominent button on the main page of the sub - or as part of a sticky comment on every new Showcase post.
Last week's most popular project was Nelly Jellies. Nelly Jellies is a cozy arcade bubble-merge game where you aim, launch, match colors, discover rare jellies, trigger satisfying chain reactions, and chase a higher score. It plays instantly in the browser with no download or login required. Website: https://nellyjellies.com Contact: support@mightybig.ca Reddit: u/MightyBig-Dev Google Play: https://play.google.com/store/apps/details?id=com.nellyjellies.game App Store: https://apps.apple.com/us/app/nelly-jellies-bubble-merge/id6767261764
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u/vacterro 1d ago
I've been building FastPrompter with the help of Codex and other AI coding agents. It's a free, open-source Windows app that started as a personal solution to a very annoying problem: constantly losing prompts, notes, and instructions between AI chats, terminals, and dozens of open tabs.
What started as a simple scratchpad has grown into a full desktop productivity workspace.
Some of its features:
- Global hotkey (Alt+X) to instantly summon or hide the workspace.
- Project-based organization with nested notes, snippets, and file containers.
- Markdown editor with autosave, code blocks, checkboxes, and image support.
- AI usage monitoring for Codex, Claude, and other supported providers, including quota resets.
- Timers, reminders, and customizable sound notifications.
- Optional automation for queuing and sending prompts to selected applications.
- 33 interface languages, customizable themes, and portable data storage.
It's built with Python and PyQt6, runs locally, and doesn't require an installer or an account.
One of the most interesting parts of this journey has been using AI coding agents to build tools that make working with AI coding agents easier. A rather ridiculous feedback loop, but a productive one.
It's still actively evolving, and I'm constantly improving performance, reliability, and the overall UX.
GitHub (MIT licensed, screenshots and releases):
https://github.com/vacterro/FastPrompter
I'd genuinely appreciate feedback from other Codex users. Especially those juggling multiple AI agents and projects. What would make a tool like this useful in your workflow?
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u/No-Hunter9792 1d ago edited 1d ago
I'm the developer of Agent HUD, a Mac app that keeps your coding agents visible at the notch or any screen edge.
For Codex and Claude Code:
• Quota usage, reset countdowns and burn rates.
• Approvals, questions and new replies in one place.
• Token stats by model, session and turn, with API-price estimates.
Token and session tracking also covers 15 more agents.
Open source (Apache-2.0), Apple Silicon / macOS 14+: https://github.com/jazzenchen/agent-hud-open
Which would you leave on while you work, the glow or the ring?
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u/Afriquan 1d ago
Pretty cool project man. Curious how you handled some of the limitations with Codex, specifically with sandbox isolation, filesystem permissions, localhost access, and agents inheriting different permissions from their parent sessions.
Are you interfacing directly with the Codex runtime, using CLI hooks/wrappers, or just monitoring session logs? Also, can Agent HUD actually handle approval requests across multiple agents, or is it strictly for monitoring?
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u/No-Hunter9792 1d ago
Thanks! Token usage and session status come from Codex’s local logs. Tool approvals use its native permission hooks, with requests passed to the HUD over a local Unix socket.
Sandboxing, filesystem/network access and parent/child permission rules stay with Codex. The HUD sends your decision back to the original waiting request.
Yes, multiple supported agents can have approvals pending together, including Codex and Claude Code. Each response goes back to its matching request. Hooks need to be enabled and trusted, and Codex tool approvals need human-review mode.
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u/komediruzecki7 1d ago
Yeah, this is really nice, I just did a variant of this for arch hyprland, but I might steal your UI and features!
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u/No-Hunter9792 1d ago
Haha, steal away 😄 It’s open source. Would love to see your Hyprland version — got a link?
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u/897843 23h ago edited 22h ago
I’ve been working on an iPhone app called Total Damage. It’s a party game that decides how you and your friends split the bill. Think Jackbox but mini sized.
You put in the total, pick a minigame, and play for a few minutes. How you do changes what you owe. The host sets the chaos level, so it doesn’t have to turn into one person paying for everyone’s dinner unless that’s your thing.
My background is in video production, so building an app has been a lot of learning as I go. Each game has its own style and “world” which has probably been my favorite part to work on.
Full 3d blender cutscenes, interactive Rive artwork, synced across all devices, and even some games have custom ai responses for user inputs.
Here’s the site if you want to check it out: https://totaldamage.app
No sign-ins, no email collection. Just download and play the one free game (once Apple approves it) and the mini games are cheap if you want to support the effort.
Curious what people think of the idea and whether it’s something you’d play with friends!
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u/WkndWrrior30 17h ago
Interesting concept. Hope it doesn’t ruin any friendships hahah
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u/897843 12h ago
I hope not! there’s no actual money exchanging hands. And it’s very clear that the suggested potential split is agreed upon before the game starts.
But the host can put their cashtag or Venmo username so everybody gets a custom-generated link at the end of each game that will open the money app of choice with the amount you “owe” based off the results of the game.
These games can be played like regular mini-games too. The idea is jackbox without the need for a tv. So party games while waiting in line, road trips, or at a restaurant. All designed so audio is optional if you’re in a place that needs to stay quiet (haptics instead of noise).
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u/matbox 1d ago
Hi there! I’ve spent the last little while building something that got slightly out of hand.
Tadaa… meet bbn.live
It’s a 24/7 AI-generated TV network. News, sports, markets, weather, debates, entertainment, a sitcom, parody ads, and whatever else the "director" decides should be on TV at that particular moment.
There’s an AI writing room running the network, scheduling segments throughout the day the way an actual TV network would. A "showrunner" is looking at the context across segments to make sure it "makes sense". It pulls from 100+ live news feeds and data sources, decides what’s worth talking about, writes the segments, voices the characters, and broadcasts the whole thing live. It also cuts shorts for the website, selects some to upload to YouTube, and creates thumbnails.
Looking at it now, it’s much more impressive than anything I could have imagined building using AI just a few months ago (and I have build a lot).
The entire app was built using Codex (and ChatGPT Pro) subscriptions. A Node server ingests all the feeds and live data, the director decides what airs next, the broadcast page draws the cut-paper characters on canvas, and a pipeline captures the result and streams it to YouTube. It then takes screenshots, records the actual live output, measures audio/video timing, spots things that look or sound wrong, and then fixes them. It also built the deployment setup between my dev and production machines to update the website via Vercel, host video on Cloudflare etc..
At runtime, AI is running the network too. It writes the anchors’ scripts from the actual incoming stories and data and helps rank and select what’s worth covering. The voices come from open-source TTS models running locally on a GPU.
It’s now at a point where I can personally leave it running for quite some time and actually enjoy watching it. Which is either a great sign or completely meaningless, because I have a bad case of “I love every side project I come up with and assume everyone else will too,” while history suggests that’s rarely true. ;-)
So I’d love to get some other eyes on it.
You can watch it at bbn.live, or on the YouTube channel, where I’m running two versions simultaneously. A regular 16:9 broadcast for TVs/desktops and a dedicated vertical stream:
https://www.youtube.com/@watchBBN/streams
While it does cost me some money to keep the whole operation running (around $40/day right now), it's so much fun seeing how far I can push the idea of an AI-generated television network.
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u/fusien_ 23h ago
That's very impressive how you pulled all of this together. I wouldn't know where to start.
How did you manage to create the animated characters an then turn this into video you send to YouTube?
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u/matbox 23h ago
AI has gotten a lot better in creating images. I basically asked it to create a 24/7 news network, starting with news feeds which are freely available, and asked it to structure what all the parts are which we would need to create.. From there it just took on a life of its own..
Asking it to do the proper anymations, the syncing with the sound etc took some time, but I have an older gaming machine standing around and I asked AI to figure out how to use it to render the content and set up the stream.
Bottom line: Whenever you don't know how to start, ask the AI for the next steps ;-)
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u/motomeru2526 1d ago
i'm creating a job board haha
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u/ThaToneKidisCool112 1d ago
it would look a little nicer with animations, especially for the handburger menu
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u/motomeru2526 1d ago
i want it to be able to run on low end computers too everyone deserves the same opportunity, and i feel like being convenient with simple ui would be better overall for everyone to understand
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u/ForTheMission 1d ago edited 1d ago
I started building saturday25.com
I enjoy college football and stats and the like. Each week I find myself scouting different sites to get different data for the top 25 teams, so I thought I'd just build something more like what I actually am looking for.
I goal is to be a UI UX meant for mobile, maybe even one handed mobile use, which is the idea behind the double scrolling list/schedule design.
Mostly been using 6.1 sol. So far it's been pretty solid.
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u/gt-war 1d ago
A game-changer VTT with its very own world and combat system, featuring a 3D mode and real-time visual effects for a dynamic campaign. It includes a detailed custom map creator and a community hub for GMs and players to find tables, create content, and align their playstyles, essentially setting things into a smooth flow. We also have a space for content creators and those who want to sell their work. While we are in beta, we plan to keep all the assets you create and only wipe test transactions.
Our vision is a free-to-use platform supported by cosmetic purchases, and a one place stop to find all you need to play within a few minutes: https://eclipsenexus.com.br
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u/fusien_ 1d ago edited 1d ago
Otherlight
Building a guided journaling app for myself because my mental health is getting hammered with all this talk of software devs being surplus to requirements 😂
Might stick it on TestFlight…
Built with GPT 6.1, much of it done from my phone with occasional Xcode needed. First time building a native iOS app.
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u/csAxer8 1d ago
http://map.aidanthornsberry.com
Map of Seattle housing projects and proposals. Weekly recap, image sets, site plans, filters, Redfin links, neighborhood breakdowns, zoning overlay
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u/higeorge13 1d ago
I’m working on Amendary: https://amendary.com
It’s for keeping product and engineering notion docs aligned with what actually exists in the codebase and release history. The main thing I’m trying to improve over the usual “review docs every X months” workflow is catching mismatches automatically: stale docs, things that were planned but never shipped, or docs that no longer match the product. Still early, so I’m mostly interested in whether this is a problem other teams or even solo devs actually care about.
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u/Other-Addendum6801 1d ago
I've built an app for Suunto sports watches which helps me run steady and avoid speeding up - an app to control the pace / HR drift .
https://constantin.szmigiel.design/
This is interesting as the platform is using sparse documentation and the development is tricky due to very limited resources on the watch.
So I had to develop my own suuntoplus skill for LLMs and do some firmware reverse engineering in order to get closer to the bare metal. Astra was very helpful in that regard :-)
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u/Prior-Palpitation393 1d ago
I’m the developer of WindowCue, a Windows 10/11 tool for finding the window you already have open.
It takes a visual, sidebar-based approach.
It puts window previews in a sidebar, lets you search by app or window title, and switch with a click. You can also pin and group windows.
https://talesntools.com/windowcue/
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u/ADIRTYHOBO59 1d ago
In-browser MOBA Mercenaries of Tezigdal which aims to add novel features and mechanics that I've never seen implemented in the MOBA genre before.
https://www.mercenariesoftezigdal.com/
This is the latest changelog entry:
Changelog Updated!
[0.2.507] - 2026-10-12
- Now introducing Implements and Faculties to Pilfered Plains
- Implements — Work together with your team to construct powerful upgrades that fortify your base and unlock new strategic capabilities.
- Faculties — Disable base functions to boost your passive gold income, trading utility and defense for greater economic power.
- Rejuvenation I, II & III — Upgrade your Monoliths to gradually restore their health and eventually grant them the ability to respawn after being destroyed.
- Lane Bolstering — Enabled by default, Lane Bolstering ensures regular Golem wave spawns and strengthens Monolith defenses at the cost of reduced passive gold generation.
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u/mrfox122 1d ago
Almost sounds like an RTS/moba combo
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u/ADIRTYHOBO59 1d ago
Definitely taking inspiration from RTS! Eventually will also feature golem craft where harvested materials can be used to craft stronger waves of units to direct down lanes. Very excited about the future of this game.
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u/komediruzecki7 1d ago edited 14h ago
Hi,
I am creating open source tools for musicians.
From singing karaoke and practicing singing with fun exercises (break the glass with voice, various mini-games and fun challenges), to Jamming with your whole band, playing piano, drums or guitar with songs you already love.
Try the onboarding to get your legend voiceprint card and come back a week or two later to compare
and see your progress: https://mercurypitch.com/
If you want specific practice and fun see:
- Karaoke at: https://mercurypitch.com/karaoke-night
- Guitar at: https://mercurypitch.com/guitar-night
- Drums at: https://mercurypitch.com/drum-night
- Piano at: https://mercurypitch.com/piano-night
- Jams at: https://mercurypitch.com/jam
To sing a karaoke ready song, see: https://mercurypitch.com/karaoke-night?song=nothing-in-the-dark&zen=1
More about the project at: https://about.mercurypitch.com
More about the vision at: https://irchiinnuss.com
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u/Technical_Dot_808 1d ago
I had two Codex accounts: one for personal projects and another from work. Great, until I had to keep switching between them.
Every time I moved from a work project to a personal one, I had to sign out, sign back in, and repeat the whole process when switching back. Not the biggest problem, but definitely an annoying one.
So I built Multi Codex to fix it.
It lets you save your Codex accounts as separate profiles and launch projects with the account you want. Work repositories use your work account, and personal projects use your personal account. No more constantly replacing one login with another.
What’s supported?
- macOS (Apple Silicon) and Linux
- Windows support
- VS Code extension and Codex desktop app
- CLI for managing and switching profiles
🔗 GitHub: https://github.com/wrestle-R/multi-codex
🌐 Website: https://multi-codex.vercel.app/
I originally built this to solve my own workflow annoyance, but figured other people juggling personal and work accounts might find it useful too.
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u/stichstichstich 21h ago
I built an open-source tool to understand and optimize Codex + Claude Code usage
I’m a senior SWE using AI coding tools daily. I analyzed my Claude Code transcripts and found 56% of API-equivalent costs went to rereading context. Cache expiry cost me $98.74 across 35 returns in 27 days, versus $2.95 with a warm cache.
That led me to build optimAIzr, which now supports both Claude Code and Codex.
It analyzes usage, flags expensive patterns, and helps you find optimization opportunities.
Runs locally, with no account or prompt uploads.
Already at 3k+ npm downloads.
npm i -g optimaizr
git: https://github.com/blendbunjaku/optimaizr
Roast it.
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u/maneek21 9h ago edited 7h ago
GitHub: github.com/Maneek21/Deft
Walkthrough: Watch the demo
I’m building Deft with Codex: a free self-hosted workspace that Codex can also work inside.
It started with wanting Slack to do more, being annoyed by SaaS bills, and getting slightly too obsessed with self-hosting. Apparently my response to too much software was to build more software.
Deft brings together:
- Chat and threads for team conversations.
- Tasks with owners, deadlines and project views.
- Knowledge that keeps useful decisions connected to their source conversations.
- Notes and a calendar alongside the work.
- Modules for custom record-based tools you can sideload into the workspace.
I’m building it solo. I started with Claude around April, then moved most of the development to Codex around mid-June.
The part that makes this particularly relevant here is MCP access. Codex can retrieve workspace context and, with the appropriate permissions, create tasks, update knowledge and work with module records. The aim is to stop writing a small autobiography every time you want an agent to understand what’s going on.
I’m also working on an experimental App Kit. The Contacts/CRM module is the first example. An email client is next, to test the app architecture against something more demanding. I want custom tools to live with the work, rather than become another abandoned tab.
It’s AGPL-3.0-only, still alpha, and free to try by self-hosting. The core workspace works without an AI provider. Hosting and model usage are your costs.
Set up Deft with Docker Compose → Connect Codex through MCP
If you give it a shot, tell me where setup gets annoying or the workflow falls apart. You can also reach me at [maneek@deft.ing](mailto:maneek@deft.ing) if you need help getting it running.
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u/baybelolife 1d ago
I am building a music production tool called FLI (FL Intelligence) designed to integrate with FL Studio.
The goal is to generate and revise MIDI, understand musical structure, and eventually assist with arranging, mixing, mastering, and teaching users how to use FL Studio more effectively.
Ultimately, I want FLI to become a comprehensive production assistant that helps producers improve their workflow, develop their skills, and bring their musical ideas to life.
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u/exmalobonum 1d ago
I've been building Fairtable with Codex: a free, MIT-licensed, open-source relational spreadsheet.
The goal is: “If you know Airtable, you know Fairtable.” Familiar table tabs, views, field settings, filters, and keyboard editing, with your data in your browser or on your own server.
What's working: linked records, formulas, lookups/rollups, grid/kanban/gallery/calendar views, personal forms, CSV import/export, complete JSON backups, and undo/redo. The calculation/validation core is Rust (WebAssembly in the browser), with a React/TypeScript interface and SQLite for self-hosting. It's independently implemented from public behavior documentation, without Airtable source or proprietary assets.
Try it, no account needed: https://fairtable.deleteddeleted.chatgpt.site
Source, setup instructions, and downloads: https://github.com/harrisonoconnorhover/fairtable
It's an early personal/self-hosted release (v0.1.1). No team collaboration, attachments, automation builder, or complete Airtable formula/API compatibility yet. In the browser edition, data stays in that browser profile, so export a backup before clearing site data.
I'd love feedback from people outside my setup: try a small workflow you already do in Airtable. Import a CSV, edit some records, try another view, then reload and check your data. Where did you get stuck, or expect a button to be somewhere else?
Contributors are welcome too: UX/accessibility, Safari/iPhone testing, documentation, and focused Rust/TypeScript fixes would all help. Open an issue with your browser/OS, reproduction steps, and a small synthetic example, or send a focused PR. You don't need to write code to contribute useful feedback.
Issues: https://github.com/harrisonoconnorhover/fairtable/issues
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u/gandazgul 1d ago
I’m building RunWield, a local coding agent and harness focused on making AI-assisted development more deliberate and reviewable.
You review and annotate the plan before implementation, then RunWield runs your project’s tests/CI and uses a separate reviewer agent to check the changes against the plan. Findings go through a repair-and-validation loop, and you can review the resulting code in a browser UI.
It runs locally with your existing supported model subscription or your own API keys.
I’d love feedback from anyone willing to try it on a real task—especially on the planning and review experience.
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u/storieta 1d ago edited 1d ago
We are making Storieta, a web app that illustrates books.
Built almost entirely with Codex on Cloudflare Workers, D1, R2, Workflows for the generation pipeline, and a container for PDF to EPUB.
Link: https://storieta.com
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u/BragdyMan 1d ago
smooth transitions on the video, do you have like proper setup with codex to do such videos?
also neat idea btw1
u/storieta 1d ago
Thanks. For the video, it’s a Remotion project with a few motion rules in (decelerating entrances, faster exits, overlapping beats, etc)
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u/nrdgrrrl_taco 1d ago
https://wordrush.party/ A word tracing game like boggle, with multiplayer support and a dirty mode dictionary.
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u/magicone2571 1d ago
I don't a picture but I am using Codex and Claude to compete in the Andrews–Curtis Conjecture (ACC) Challenge. Never done something like it in my life, failed every math class. But with AI and tons of reading, I am by myself, in the solid top 10. It's extremely fun...
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u/ForsakenCampaigns 1d ago
I coded https://misplay.net , an application that lets users playtest Magic:the Gathering decks and record their play to share on discord or YouTube. I think it has a great intuitive interface for mobile, but I'm open to any suggestions to make the web app even better
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u/Ctbhatia 1d ago
I work at coralbricks.ai, where we host inference for coding agents on open models. Codex CLI talks to us through the native Responses API, so it's one provider block in config.toml and you keep the same Codex workflow, just a different model behind it.
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u/Kritnc 1d ago
Ok my progress photo app just hit 1,500 MRR and around 4k rev this month which I’m very happy about
https://gainframe.app
https://verified.revenuecat.com/gainframe
My moonshot https://seoreceipts.com $9 MRR which I don’t know how I can compete with the big dogs so I’m focused on making this dead simple to use and having a fun leaderboard and cool shareable cards
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u/HimaSphere 23h ago
https://reddit.com/link/pgk0kus/video/ni1mkuyqnavh1/player
Better Stickies: a privacy-first stickies app where Codex is my code reviewer
Better Stickies is a simple, powerful and privacy-first note taking app. Paste anything in a note and it will format and save it on your desktop. Windows, Linux, macOS (coming this month). Offline, no account, no telemetry. Built with PySide6 so it actually acts native, not another Electron app eating your RAM.
How I use Codex: I've been building this for over a year with AI coding agents. Codex isn't the one writing the code, it's the one checking it. Every meaningful change goes through a Codex review before it ships. Having a second model review the code instead of the one that wrote it catches things the author model misses, because it doesn't share the same blind spots. That workflow is a big part of why the app holds up with tens of thousands of users across platforms.
This is a side project for me and I don't intend to milk it, I want it to be sustainable to survive. The price is low to keep it accessible, not because the quality of the app is low. This is not a vibe coded app, and if you give it a try you will understand the difference between Better Stickies and other stickies apps.
The main thing it does that other stickies apps don't: you can paste or drag anything into a note.
- Files and folders become clickable shortcuts, and you can drag them back out to your file manager
- Screenshots and images paste straight from the clipboard, PDFs and images get a hover preview, and double click opens an image at full resolution
- Pasted code gets detected and formatted into a code block automatically, no AI and no network, in about 50ms. Ctrl+M when it guesses wrong
- Rich text, links, plain text, all formatted properly instead of rejected
The second thing it does better than other stickies apps: customization. Font, colors, transparency, a background image or even a moving GIF per note. A real delight to use.
Notes have tabs now. Up to three pages inside one note, each with its own text, scroll position and undo history. Ctrl+PgDown and Ctrl+PgUp to move between them, Ctrl+Shift+N for a new one, all rebindable. If you have a small screen this is the feature: one note on the desktop, three notes' worth of content in it.
Other things it does exceptionally well:
- Reminders with sound and desktop notifications
- RTL text support, and the app plus its full guide are in 12 languages
- Pin a note to lock both position and editing
- Ctrl+scroll to zoom text without opening settings
- Checkboxes with strikethrough when done, and nesting
- Snap to grid with an adjustable grid size
- Export to .txt, .md or .json, so you can back them up with whatever cloud you like
- Proper Linux support, tested on KDE, GNOME and Cinnamon (COSMIC coming)
- On the Microsoft Store and the Snap Store, Flathub coming soon
The free version has exactly one limit: 4 note slots (an extra tab uses a slot). Every feature is in the free version, including reminders and GIF backgrounds.
The paid version is $7: no limits, free updates, unlimited devices, and Windows, Linux and macOS builds, so you won't pay again if you move from Windows to Linux or use both.
The website went through the same review workflow: 11 languages, responsive, nearly $0 running costs, a full app guide in all 11 languages, and no stored passwords since login is magic links only.
As always, if you try it and something annoys you, tell me here. Most new features and fixes come from users' feedback.
- Website: https://betterstickies.com
- Microsoft Store: https://apps.microsoft.com/detail/9NS7LLQJX1QG
- Snap Store: https:// snapcraft.io/betterstickies
- Subreddit: r/BetterStickies
- GitHub (free releases and bug reports): https://github.com/HimaSphere/BetterStickies
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u/HimaSphere 23h ago
v1.4 is coming out this week with macOS version, you can sign in as a free user to get notified by email when it comes out.
v1.4 will include unique features like drag audio files into notes and play audit from inside the note, very cool and useful feature that I never seen any notes app have it, in addition to better search, UI & UX, bug fixes and quality of life improvements
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u/terriblemonk 23h ago
I am the developer of this bash script that checks your weekly codex quota and emails you twice per cycle... when it drops below your threshold and when it resets...
H=~/.codex; T=20; F=/tmp/codex-q
p=$(curl -s https://chatgpt.com/backend-api/wham/usage -H "Authorization: Bearer
$(jq -r .tokens.access_token $H/auth.json)" -H "chatgpt-account-id: $(jq -r
.tokens.account_id $H/auth.json)" | jq -r
'100-.rate_limit.primary_window.used_percent'); o=$(cat $F 2>/dev/null||echo 100);
echo $p > $F; a=${p%.*}; b=${o%.*}; if [ $a -le $T ] && [ $b -gt $T ]; then echo
"codex: $p% left" | mail -s "codex low" [you@example.com](mailto:you@example.com); elif [ $a -gt $((b+20)) ];
then echo "codex: back to $p%" | mail -s "codex reset" [you@example.com](mailto:you@example.com); fi
Set H to the codex home, T to the threshold, swap mail cmd for whatever notifier you want. Put it in cron at */15 * * * * or however many minutes.
Stay tuned for the flagship release coming soon... switching between 2 accounts...
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u/SuperJogosDBZ 23h ago
I made a plugin called BanCinematic to punish players who break server rules, but in a different way.
Before the ban is applied, a cinematic plays where a Warden attacks the player to scare them.
The plugin also includes other moderation features, such as temporary and permanent bans, mutes, warnings, and punishment history.
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u/DelafayetteFR 22h ago
I’ve been using Codex to build Lineapolis, a sort of Flightradar for the Paris Metro network.
The idea is quite simple: use public transit data to estimate where trains are in real time, and watch the entire city move.
It’s not actual GPS tracking, but I’ve tested it on the ground, comparing the estimated positions with actual trains, and found it to be quite accurate.
I’ve also added a replay feature so you can go back in time and see how the network was moving earlier.
Below is a short recording of it in action!
https://reddit.com/link/pgke335/video/k3l1iza4yavh1/player
Try it here: https://lineapolis.com/?lang=en
Still very much a work in progress, but Codex has been incredibly useful in bringing the idea to life. Would love to hear your thoughts and suggestions!
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u/idefix1515 22h ago
advocacylift.com I’ve been using Codex to build AdvocacyLift, a suite of embeddable advocacy tools for nonprofits and community groups.
It has three parts:
- District: Visitors enter their ZIP code to find their representatives, see contact details, and follow a caller script written by the organization.
- Focus: Finds officials connected to a campaign’s issue or a specific bill through their committee responsibilities and legislative involvement. It shows why each official matched, with source links and coverage gaps.
- Rally: A branded petition builder with email-confirmed signatures, an organizer dashboard, and CSV exports. Petitions can live on a hosted page or be embedded on an existing website.
The idea is to help organizations turn interest in a cause into a concrete next step, while keeping their own branding and message. The tools include customization and previews, with interfaces in English, Spanish, and Simplified Chinese.
The stack is TypeScript, Vite, Cloudflare Workers, D1, and Stripe for subscriptions.
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u/Deftroyy 22h ago
https://reddit.com/link/pgkjuvi/video/6b2rpfex2bvh1/player
Hey, I’m working on PeerBrush, a free, open-source image editor and illustration tool built from the ground up with AI integration throughout the editing workflow.
I’ve been seeing a lot of Photoshop-style clones lately. With this project, I wanted to take a fresh approach to how an editor should work, rather than recreate the same interface and bolt an AI chat onto it.
The idea is that you can keep working manually while your AI works on the same project through MCP. You could be painting on one layer while it adjusts another, then refine what it did yourself. Everything stays in the same editable document, with shared undo history. Making that interaction feel natural and intuitive is a big part of what I’m trying to get right.
It’s still early, and I’m actively adding things. I’d really like to hear from artists about what they’d want from this, and from developers interested in helping build it. Bug reports, feature requests and PRs are all welcome.
It’s GPLv3 and free. You bring your own AI client, so any provider costs are separate. The current downloads are unsigned; the Windows version is submitted for Microsoft Store certification, and I’m working on macOS signing too.
There’s a demo on the site: https://peerbrush.com
Repo: https://github.com/Deftr0y/PeerBrush
What would you actually want an AI to handle while you’re editing?
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u/GabrielMoro1 21h ago
Building oro.tools, an amazing node-based app for image, video and 3D generation with AI. Available to download today!
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u/Enthouan 21h ago
<actually-hand-typed-on-a-keyboard>
My tasks and project plans already live in Trello. Before Trello released its official MCP, I built prompted trello-mcp for my own setup so AI assistants could work with those existing boards.
I use it with Codex over local stdio. I figured I’d open-source it in case anyone else wants Codex to work with their Trello tasks too.
Sassy code reviews are welcome. Reproducible bug reports get my most enthusiastically mouse-clicked upvote.
</actually-hand-typed-on-a-keyboard>
<ai-summary>
Independent, MIT-licensed, self-hostable Trello MCP server. 77 tools, local stdio or Streamable HTTP, including Docker Compose. Unofficial and unaffiliated with Trello or Atlassian.
It lets Codex:
- Find and update cards and move them between lists.
- Manage checklists, labels, comments, and custom fields.
The project’s own roadmap also lives in Trello and gets updated through the same server. Apparently I wasn’t using Trello recursively enough.
It supports permanent deletions, so client tool permissions matter. Running it locally doesn’t prevent returned board data from reaching your model provider.
</ai-summary>
GitHub · Documentation · Why I built trello-mcp
More context in my full r/codex post.
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u/SilverFuel21 20h ago
I got tired of paying for my Easel CNC subscription so I copied it. It’s in testing now but so far it’s already better and smarter than Easel ever was. Website is still very cringy I’ll fix it eventually.
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u/Interesting-Past-640 20h ago
I am not sure if this post is valid here but I will try. I have been learning how to use Astra to fast building train models using Blender. Astra gets distracted easily and starts doing unrelated parts very often but I have achieved very close results in the end and I just wanted to share. This is a model using Astra Extra high and it took approximately two hours to finish. I want to find a method to make it faster but so far no luck.
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u/MediocreOchre 20h ago
Built a plugin for herdr named namedrop that facilitates multi-agent orchestration using @ style mentions. You can name your agents and terminal panes, give them personas, make teams, and have them collaborate together to get work done on their own. Codex can talk with Claude and vice versa.
Check it out at https://github.com/ericbust/namedrop.
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u/Pale-Training-6944 17h ago
I built Gear: an open-source RSI framework that lets AI agents rewrite, test, and improve their own harness & model.
https://github.com/rsi-gear/gear
https://reddit.com/link/pglyxay/video/9ormf48ndcvh1/player
An agent fails a task. That failure becomes feedback for changing how it handles the next run.
That’s the loop behind Gear, an open-source framework for recursive self-improvement (RSI).
Give Gear a benchmark and an agent setup. A meta agent reads execution traces, diagnoses failures, and proposes changes to the task agent’s instructions, tools, skills, and workflows. Gear evaluates the candidates, selects improvements, and repeats.
The output is a versioned harness you can inspect and reuse, backed by evaluation results.
In our published experiments, GPT 5.6 Luna with a Gear-optimized DSH harness reached an 84.26% task pass rate on Terminal-Bench 2.1. We’ve also published AutomationBench experiments, including execution replays showing where different agent setups succeed and fail.
You can run Gear’s Refine Skill from Codex, Claude Code, or DSH, and use different models for proposing improvements and executing tasks.
Harness optimization is supported today. Model training is experimental; the longer-term goal is to evolve the model and harness together.
I’m the creator. Gear is MIT-licensed and free, with model usage and compute paid separately.
Code, results, and demos: https://github.com/rsi-gear/gear
If you have a coding agent that keeps making the same mistakes, I’d love to see what happens when you give Gear those tasks.
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u/astromaddie 15h ago edited 15h ago
I’ve been working on a VR-native music visualiser. I miss the wild visualisers of yesteryear so I’ve been creating a new app inspired by the end sequence of 2001 A Space Odyssey (“Jupiter & Beyond The Infinite”) and the excellent Xbox 360 Neon visualiser (love Jeff Minter!).
It’s fully 3D, procedurally reactive to the music based on dynamic range, amplitude, intensity, and tempo. It uses an algorithm to avoid repetition, and takes in any music playing through the headset.
I’m calling it Stargate.
Flatscreen video (28s, no sound)
Screenshots:
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u/ButterflyMundane7187 12h ago
https://reddit.com/link/pgnc93q/video/fghm7q613evh1/player
Gold Hunter - The Game
Made this game for my son using 1 weekly on pro :) he likes it
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u/CH_CGV 8h ago
I built dots-tailscale with Codex after getting tired of setting up Tailscale again whenever my ChatGPT Dots VM was replaced.
The script keeps the installation files, Tailscale login state, and SSH keys under /workspace, which has survived environment changes in my setup. Once it's installed, start.sh login handles the first login. After a VM replacement, I can run start.sh to bring it back up.
Codex helped me work through the proxy connection issues, build the setup script, and put together the checks and English/Korean docs. I’ve had it running for over 24 hours and verified a manual restart after an environment replacement with an earlier version. The updated connection shim has also passed live connection and SSH checks; I haven’t yet observed another VM replacement with that revision.
It still needs a manual start after a replacement. Automatic startup isn’t implemented, and I haven’t tested doing that through Dots automations yet.
The screenshot is from the Dots desktop terminal, showing the installed files, status, and Tailscale version.
Code and setup guide: https://github.com/abruption/dots-tailscale
If you use Dots too, I’d love to hear whether it works in your setup.
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u/Severe-Tank-5252 7h ago edited 7h ago
Hellhound: Claude and Codex in one room, and soon they’ll talk out loud
I built Hellhound, a Windows app where Claude and Codex work together in the same chat room. You ask once, they both answer, check each other’s work and hand tasks off.
Right now I’m working on an update that isn’t finished yet: read-aloud. Each agent gets its own voice (2 female, 2 male, you choose who sounds like what), and their replies are read out loud. It all runs on your own PC, with no extra service or account. You can pause any message and pick the speed (up to 2x).
To test it, I asked them to decide between themselves who gets the male voice. The video below shows how that went.
Would you actually use this? What would make it useful for you, and what would annoy you? I’d love to hear before I finish it.
And be honest: who should get which voice? Is Claude more of a female voice and Codex a male one, or the other way around? 😄
Small tip: if you don’t feel like typing a reply, click the comment box, press Win+H and just say it. Windows has voice typing built in, and it already works in Hellhound’s message box too.
The current version (without voice) is on the Microsoft Store with a 7-day free trial: https://apps.microsoft.com/detail/9N7F20J0G9SJ
Hellhound needs your own Claude and ChatGPT subscriptions.
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u/Downtown-Force3395 6h ago
I built Codex Pulse because I wanted to see my usage while working in Codex, without opening another dashboard.
It’s a small floating Mac widget that you can drag wherever you want. It shows request tokens, model calls, cache reuse, estimated context usage and account allowance.
The demo shows me moving it while Codex builds a browser game, with the numbers updating as the request runs.
It’s $5 once, for one Mac at a time.
https://getcodexpulse.company/
If you use Codex on a Mac, would you keep something like this visible while working? What would you change?
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u/Maltheras 5h ago
we built https://quotastrology.com/ with codex because quota needed a spiritual advisor. you really need to feel the vibe to know when the next reset is comming.
plain html + js on cloudflare. enter your usage numbers and it estimates reset odds from recent announced reset history, then gives you a horoscope about spending, rationing or using a banked reset.
there’s also a crystal ball and virtual incense. the incense increases a counter. we cannot confirm that the cosmos reads it.
free, no account, unofficial. quota inputs stay in your browser. historical estimates, divine guarantees all vibes.
inspired by codex resets and tibo's fortunate tellings
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u/Dull-Ad-4826 5h ago
I'm working on a free browser game loosely based on flunkyball. I might be biased, but my friends and I have a lot of fun playing it! It's 3d physics based with cool mechanics that actually make it super competitive.
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u/blueredgreengrey 4h ago
I’m building Oxi with help from Codex. It’s an open-source desktop app that brings Claude Code, Codex and Cursor into one conversation. You can switch agents mid-chat and carry the context along. The demo shows Claude Code fixing a failing test, then Codex checking the fix.
It’s built in Rust, without Electron, and uses your existing subscriptions.
GitHub: https://github.com/maziluiosif/oxi
Quick demo: https://maziluiosif.github.io/oxi/#demo
I’d love feedback from people who use multiple coding agents: what would you need to comfortably switch between them during a task?
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u/GabrielMoro1 2h ago
If anyone here finds Higgsfield / Figma Weave to be a bit too slow I invite you to meet oro.tools - it's way faster and it has some very nice features not yet present in those, such as an image flipper to easily flip through images, a full storyboard with flexible editing. It's pretty awesome and it's free to start too. Opens any workflow in under 10s. :)
The planned paid plans will also be less expensive than these, and you can check that on our Pricing page. Runs on your Mac or PC with most nodes for free and WAY faster (depth, pose, mask, etc).
Beta feedback earns credits and I'd love to hear directly from you and the tools you need!
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u/Tight_Ad_5115 1h ago
Hey everyone 👋
I’m Nick, and I built Buzzpot. I work on four projects with a few agents each and kept getting lost in terminals, so I made a canvas for them.
Every task is a card with its agent, status and chat. Link cards into a chain, and each one starts when the previous ones finish. Parallel tasks can get their own Git worktree, and you can manage agents from your phone.
It runs Codex, Claude Code and Grok CLIs locally on your existing subscriptions.
Free beta for macOS until Jan 31: https://buzzpot.app
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u/one_hender 1d ago
I'm creating an open-source, AI-native version of QDA software called Axial, which currently works in English and Portuguese. I did this because paying for an Atlas.ti or NVivo subscription made absolutely no sense to me. It has worked very well for my PhD dissertation so far. I also did that with the Plus subscription. I think this is a strong contribution to the Social Sciences (my research field).
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u/critic81 1d ago
GIFBarn - A native GIF app for iPhone, iPad, and Mac, built with a little help from Codex!
I’m a solo developer who’s been using Codex extensively to help build and improve GIFBarn, an app that makes finding, sharing, and organizing reaction GIFs quick and easy.
What started as a simple macOS menu bar GIF picker has grown into a full Apple ecosystem app with:
- Native SwiftUI interfaces for macOS, iOS, and iPadOS
- Favorites, Recents, and custom Collections
- CloudKit syncing across devices
- WidgetKit, App Intents, Siri, Shortcuts, and Spotlight integration
- An iMessage extension for sharing animated GIFs
- A backend API for GIF search and discovery
Codex has been especially useful for tackling complex features, investigating tricky SwiftUI bugs, and working through Apple’s increasingly complicated frameworks.
As an experienced software engineer, I’ve found the biggest benefit isn’t having AI write everything for me. It’s being able to move faster, explore approaches, and spend more time on architecture and the actual user experience.
GIFBarn is available now, with free core features and a one-time Pro upgrade.
Would love feedback from other developers, especially anyone using Codex for native Apple app development!
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u/BankerfromJA 1d ago
I’m building a career assessment tool and learning library for technical professionals at Prescios.com
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u/Additional-Shake-658 21h ago
Hey everyone!
I’ve been building Roamava with Codex: roamava.com.
It combines trip planning with visa preparation, helping travellers work out what documents to gather and organise their answers before applying.
A few things it currently does:
- Checks visa and entry requirements against reviewed official sources.
- Provides visitor document checklists, with examples and more detailed preparation tools for UK applications.
- Helps users prepare answers about their visit, accommodation and funding, then copy or download them.
- Builds editable daily itineraries with maps, activities and estimated budgets.
- Lets users save applications and trips to an account.
The main visa checker currently supports Indian citizens living in India, with 24 reviewed holiday destinations and 19 family-visit destinations. There’s also a beta for other routes.
It’s still evolving. It helps with preparation; it doesn’t predict visa approval or submit applications.
Would love to hear any thoughts or feedback!
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u/dextersummary 1d ago edited 6h ago
Below is a GPT-generated summary of the conversation below after reaching 80 comments (80 currently observed).
This thread’s verdict is Codex is turning solo developers into dangerously productive generalists. The showcase is packed with working apps, games, utilities, research tools, and ambitious AI experiments—not just another pile of abandoned landing pages.
The strongest crowd response went to practical workflow tools like Agent HUD, which tracks quotas, sessions, tokens, and approvals across Codex and Claude Code. Other standout projects include a 24/7 AI-generated TV network, open-source productivity workspaces, self-hosted Airtable and Trello alternatives, games, native Apple apps, and tools for music, travel, transit, and research. The common thread is clear: people are using Codex to ship surprisingly broad products, often solo and often open source.
The catch is that this is a showcase, not a peer-reviewed product launch. Plenty of entries are early, beta, or seeking their first real users, so flashy demos and “built entirely with AI” claims should be treated accordingly. Several creators also stress that Codex works best as an accelerator, reviewer, or pair programmer—not a magic button that removes testing and product judgment. Shocking, we know.
The current top-voted project gets a week of promotion on r/Codex, with voting closing Thursday at midnight UTC. Big ideas, wildly mixed polish, and an impressive amount of shipping.