Vibe coding & appsX · @froessell
Build your first games as a designer, not a game dev
A 25-year designer built six games with Claude Code and Codex; getting them running was quick, making them fun took longer.
Free to start1 weekendIntermediate
How to use Claude Code and Codex together
Short answer: Builders run Claude Code and Codex side by side and give each a role: one writes the code and the other reviews the real diff, or they split features across parallel git worktrees. Open-source tools such as consult, forge and AgentDrop let the two agents ask each other for advice and hand over results, and Claude Code can call Codex for jobs like image generation. You need a Claude plan with Claude Code (Pro or Max) and a ChatGPT plan with Codex, or API keys for each; small menu-bar apps such as Pikori show both usage limits.
How builders split work between Claude Code and Codex, let them review and message each other, and keep track of both usage limits. 24 matching use cases below, each with a public source.
Looking for something else? Search all 1099 use cases or .
Get started in 3 steps
- Give each agent a clear role, for example Codex builds and Claude Code reviews, so the model that wrote the code is not the one grading it.
- Share context through files in the repo (a plan, a decisions log, test results) rather than pasting between chat windows.
- Watch both usage limits; when one plan runs out mid-task, hand the same task and context to the other agent.
Vibe coding & appsX · @afterthewinddev
Build a Monster Hunter style co-op game solo with Claude Code and Codex
A solo developer is building After the Wind, a Ragnarok Online meets Monster Hunter game in Godot. Every feature starts as an idea and research, gets built with Claude Code and Codex, then is judged in game and iterated.
$17/mo5 weeksAdvanced
Vibe coding & appsX · @emersoftware
Build a strategy game where Codex and Claude play each other
A developer built Castellan, a real-time strategy game made with Codex and Claude Code in which the players are Codex and Claude themselves.
$17/moWeeksAdvanced
Vibe coding & appsX · @hsyvy
Build and install Android apps on your phone with no computer
AppMama is an Android app that builds Android apps on the phone: you type an idea, Claude Code, Codex, Grok or OpenRouter writes the code, Gradle compiles it on the device and you install the APK.
$17/mo30 minutesIntermediate
Vibe coding & appsX · @gogetit1214
Compare the cost of building the same game with three coding agents
The same Tetris prompt went to Claude Code (Opus 5.5), Codex (GPT-6.1 Sol) and a DeepSeek harness (V4 Pro), timing each run and its cost.
$17/mo5 minBeginner
Creators & videoX · @arthur_polimeni
Edit faceless-channel videos on a real timeline with your own coding agent
Lugh Xtudio is a desktop video studio where Claude Code, Codex or Antigravity does the editing on a real timeline and you can still adjust anything by hand. It is aimed at creators and faceless channels.
$17/moWeeksIntermediate
Research & learningHacker News · abdullahalharir
Get your handwritten math marked up like a teacher would
A calculus student built penmentor: press a key while working by hand in Xournal++ and Claude, Codex or Gemini marks up the page with hints instead of answers. It runs on the AI command-line agent you already use, on that subscription.
$17/mo1 weekIntermediate
Dev & opsX · @Giamme1
Have one model build and a different model review the real diff
He built forge: GPT via Codex writes the code and Claude Opus via Claude Code reviews the actual diff rather than the builder's summary, in one command.
$17/mo1 dayIntermediate
Dev & opsX · @SaidevDhal
Keep working when one coding plan hits its limit by handing off to the next agent
A developer built codemax, one terminal for Claude Code, Codex, Grok and Cursor. When one plan runs out mid-task, the next agent picks up the same task with the same context.
$17/mo15 minutesBeginner
Dev & opsX · @404kidwiz2
Make coding agents ask before they delete, push, deploy or migrate
A developer released production-dev-team, an open-source skill for Claude Code, Codex and Cursor that forces an approval step before destructive actions and never lets the agent call something verified without a recorded check.
$17/mo15 minutesBeginner
Dev & opsX · @spreen_co
Port Codex's computer-use feature to Rust for any agent
He reverse-engineered the computer-use component that ships with the open-source Codex and rebuilt it in Rust so Claude Code and other agents can use it.
$17/moDaysAdvanced
Dev & opsX · @Griffin_Liu
See which routes and tests your agent's uncommitted change touches
He built LayerMap: it reads your uncommitted diff and lists the HTTP routes and existing tests that reach the changed code, so you know what an agent's edit might break.
$17/moDaysIntermediate
Dev & opsX · @saku_tei
See your Claude Code and Codex limits in your Mac menu bar
Tired of hitting limits mid-task, he built Pikori, a small Mac menu bar app showing Claude Code and Codex 5-hour and weekly limits and reset times, with a pixel buddy that gets nervous as you run low.
$17/mo1 dayBeginner
Dev & opsX · @Chengxing_Xie
Send results straight from your coding agent to a teammate's agent
Instead of copying Codex output into Slack so a teammate can paste it into Claude Code, a developer built AgentDrop, an open-source tool that sends results, files and context directly from one agent to another.
$17/mo30 minutesIntermediate
Vibe coding & appsX · @ShekOMP
Spend spare AI credits building on a shared city map
He built Brick City, a free game where your own AI agent claims a block of land and builds on it. He had Grok Bot build the pyramids and the Sphinx; others used Codex and Claude Code.
$30/mo30 minBeginner
Dev & opsX · @shafiq_2001
Sync coding agent sessions and memory between laptops
A developer built mem-mastero to carry Claude Code, Codex and Copilot CLI sessions and memory across machines, using GitHub or Google Drive as the sync store.
$17/mo15 minutesBeginner
Dev & opsX · @AbuHayaaa
Track every AI coding plan's price and limit changes on one page
With Claude Code limits, Copilot credits and Cursor pricing all changing, he built LimitWatch, one page tracking prices, limits and each change for Cursor, Claude Code, Codex, Copilot and more.
$17/mo1 dayBeginner
Dev & opsX · @ChaiWithCodeHQ
Watch what all your coding agents are doing from the Mac menu bar
He built Loom, a native macOS menu-bar monitor showing what Codex, Claude Code and Antigravity sessions are doing right now.
$17/moDaysIntermediate
Research & learningX · @sayan_ai
Add research agent skills that stop invented citations and follow journal rules
A team open-sourced more than 280 research agent skills aimed at the ways agents fail at academic work: invented citations, generic writing and ignoring current journal rules. They install with one npx command into Claude Code, Codex, Cursor, Gemini CLI and more.
$17/mo10 minutesIntermediate
Dev & opsX · @maxmillions_eth
Auto-generate before and after screenshots and demo videos for pull requests
A developer open-sourced skills for Claude Code and Codex that generate before and after screenshots for a pull request, record demo videos and write short team updates, so changes are easier to review and share.
$17/mo15 minutesBeginner
Dev & opsX · @jjkim336468
Get daily summaries of what you built with Claude Code and Codex
AI WorkLog is a free open-source macOS app for Claude Code and Codex users with daily AI work summaries, project tracking, conversation search and token and cost analytics.
$17/mo5 minutesBeginner
Dev & opsX · @realwhonghom
Have a second AI review your agent-built app as if it must handle 10x the data
The footage search Claude Code built him looked done, until a second AI found every vector held in RAM, 8 to 10 GB at 1,000 hours of footage by Claude's estimate. His review prompt: list each problem as a numbered fix with the file, why and the exact change.
$17/mo10 minutesBeginner
Creators & videoX · @hypesNvibes
Let Claude Code and Codex run a whiteboard-explainer YouTube channel
He made a YouTube channel that explains things simply in a drawing style and is managed end to end by Claude Code and Codex, with Opus 5.5 doing about 95 percent of the work and open-source tools for the voice.
$17/moWeeksIntermediate
Dev & opsX · @neelsatyavolu
Let Claude Code, Codex and Grok consult each other and review each other's diffs
He built consult so his coding agents can ask each other for advice, review each other's diffs and message sessions already running, instead of him pasting context between them.
$17/moDaysIntermediate
Common questions
- How do you use Claude Code and Codex together?
- Builders run Claude Code and Codex side by side and give each a role: one writes the code and the other reviews the real diff, or they split features across parallel git worktrees. Open-source tools such as consult, forge and AgentDrop let the two agents ask each other for advice and hand over results, and Claude Code can call Codex for jobs like image generation. You need a Claude plan with Claude Code (Pro or Max) and a ChatGPT plan with Codex, or API keys for each; small menu-bar apps such as Pikori show both usage limits.
- Which AI tools do people use to use Claude Code and Codex together?
- Across the 24 sourced use cases in this guide, the most used tools are Claude Code, OpenAI Codex, Cursor, Antigravity, Grok.
- How much does it cost to get started?
- 1 of the 24 use cases can start on a free plan. The most common paid starting price is $17/mo (22 use cases). Prices come from each tool's official pricing page.
- How long does setup take?
- 9 of the 24 use cases list a setup time of an hour or less. Each card shows the setup time the builder reported.
- Are these real examples?
- Yes. Every use case links to its public source (an X post, a Hacker News thread or a GitHub repo) with the author and date, so you can check it yourself.
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