Reading up on Codex

Codex for finding customers for your startup:

@gdb

I'm open-sourcing my Agent Skills library. 75 skills for Codex, Claude Code, Cursor, and other agents, focused on web design, landing pages, motion, WebGL, UI styles, and assets. A few favorites: - Video to Super Prompt Turns a screen recording of a design, landing page, or animation into a super detailed prompt that Fable 5 can one-shot into HTML. - HTML to Interaction Prompts Takes an existing HTML page, like something built in Aura, and extracts prompts for sections, buttons, animations, WebGL effects, and interactions. - Stitched Full Page Capture Captures the entire landing page, not just the hero, so you can use the full page as a design reference. - Daily UI Inspiration Combines multiple skills into an agent loop that browses the web, captures great landing pages, and turns them into detailed prompt packs. It's free. Fork them and adapt for your own workflow.

@MengTo

If you run this workflow, ask Fable to make codex the workhorse. https://github.com/steipete/agent-scripts/blob/main/skills/codex-first/SKILL.md

@steipete

Headroom -- a lightweight native Mac OS menu bar app for tracking your usage. Shipping tonight/tomorrow so that you can keep eyes on your Fable-filled week ahead. Works for both your subscriptions and API spends. Codex and Claude for now. Free dollars. Fully signed install package will be downloadable from my website. Stay tuned

@kylezantos

After almost every single task, you can ask Codex/Claude: "anything else to cleanup/simplify?" and there will be something to cleanup/simplify. I do this all the time.

@linuz90

My girlfriend couldn’t cancel a hotel reservation today. No cancel button. They weren’t replying on WhatsApp. Since I really didn’t want to call the hotel, I told her to try and just use Codex. 2 minutes later, she came back to me saying that Codex quickly realized there was a basically hidden cancel button on the reservation page (nasty dark pattern), and it just went ahead and canceled for her. It’s a little thing, but there’s so much daily stuff now I’m doing with Codex. Paired with Computer Use and the Chrome integration, it’s really great at a huge range of tasks, so I’m starting to default to it. (this is probably true for Claude as well)

@linuz90

Your favorite Codex shortcuts are getting an upgrade. July 15th.

@OpenAIDevs

How I AI: Using Codex + Claude Code to Prototype Agents

@clairevo

Show Codex a workflow once. Reuse it as a skill. Record & Replay lets you show Codex a recurring task, like filing an expense report or submitting a time-off request. Codex turns that demo into an inspectable, editable skill. You control when recording starts and stops.

@OpenAIDevs

WTF Is a Loop? Part 2: The 15 Loops People Are Actually Running (and the Commands to Steal Them)

@mvanhorn

5 steps to create amazing videos like the one below from HTML for free: Install @HyperFrames_ in your favorite coding harness (e.g., Codex or Claude Code). Then... 1. Gather your assets Create a project folder and add screenshots, logos, website captures, reference clips, and a frame md to give Hyperframes the raw material for your video. If you have a design md you can convert it to a frame md here:

@petergyang

So I have Codex running on a /goal and it's been working for 2 hours but the problem is it's making alot of wrong assumptions so I have to monitor and steer it constantly. Is this expected? Perhaps I should've had it make a detailed plan first?

@petergyang

Introducing /visual-plan - a skill to generate rich, visual plans for Claude Code and Codex. Plan mode in Claude Code is incredible. But I always find my eyes glazing over when it gives me this huge markdown essay in my terminal. I found I can make much better visual plans with reusable components. So I made a skill called `/visual-plan`. It generates plans as MDX with visual, interactive components. Diagrams, interactive API specs, schema design changes, annotated code, and even pan and zoomable wireframes. So for any UI work, you can look at a wireframe first, comment on it, iterate, and then have the agent work. I’ve found this to be a much more intuitive interface for reasoning about what the agent is doing. It’s somewhat inspired by that popular post about how HTML is better than Markdown. But HTML can be slow and verbose to write. And it doesn’t look good checked into a repo. This has really made me feel like humans and engineering are entering a new abstraction phase, where we reason about things at the plan level. As long as the plan is good, agents are getting more and more reliable at executing on it. Almost to the degree that we trust the C compiler to compile to assembly reliably. Plans are the new intermediate representation. I also made a skill for the reverse of this, called `/visual-recap`. After the agent works, it gives you a recap of everything it did. Same idea: wireframes, interactive API specs and diffs, schemas, annotated code, etc. So now when you’re reviewing what the agent did for you, or looking at a pull request of somebody else’s code, you can see a visual recap instead of just reading a wall of text. It’s all free and open source. You can find it on my GitHub. Will link to it in the reply because we all know how dumb these algorithms are with links.

@Steve8708

Three Ways Codex Can Use a Computer

@jxnlco

anyone built a reliable system/solution for indexing and searching threads across claude code, codex, cursor..etc? All the built-in ones are not that great.

@shadcn

Mastering Codex (Mobile) for Engineering

@Dimillian

I basically never write my own /goal anymore. I ask Codex to write one for itself, and one for each agent it spawns. Like this 👇

@skirano

We heard you wanted to use Codex rate limit resets on your own time. Starting today, we’re rolling out the ability to save rate limit resets to use later. We’re starting Go, Plus, Pro, and Business users with one free reset:

@OpenAI

Here's a simple loop: Tell codex to maintain your repos, wake up every 5 minutes and direct work to threads. That makes it easy to parallelize+steer work as needed. I use a orchestrator skill combined with my triage+autoreview+computer use skills, so some work can land autonomously.

@steipete

We're betting on the next 1B+ users being agents, so we're launching agent signups. Ask your agent to add Firecrawl, instantly claim your API key, then pull web data in seconds. Works with Codex, Claude Code & Grok Build, all powered by auth.md from @WorkOS🔥

@firecrawl

People still using Cursor/Codex/VSCode to code?! I don't get it... I know we used to call it "vibe coding" Today, I call it professional product engineering. Done staring at code in an editor, we're way pass that. This is how you should do it in 2026 👇

@SimonHoiberg

Introducing text-to-lottie: an open source skill and harness for generating production ready Lottie animations with codex/claude code. $ npx skills add diffusionstudio/lottie Prompts guide and repo in the comments.

@konstipaulus

The things that Codex can do with browser use blow my mind

@petergyang

Today we're launching Paxel: a free tool that analyzes your Claude, Codex, and Cursor coding sessions and gives you a profile of how you build with AI. It runs locally inside Docker, and your code never leaves your machine. Try it at http://paxel.ycombinator.com

@ycombinator

More of the iOS app loop, now inside Codex. The Build iOS Apps plugin lets Codex view and test your iOS app in the in-app browser, open SwiftUI previews, and hot reload edits without leaving Codex.

@OpenAIDevs

Some more dumb questions about Codex: 1. I use it on my primary laptop which I don't keep on all the time so I don't like setting up cron jobs there. Can I set up the app on my Mac Mini too and run all the cron jobs through that? I have a feeling it's gonna replace OpenClaw/Hermes for me then. 2. Is the image gen feature on Codex basically free? It's using ChatGPT Images 2? 3. Anyone tried generating images first and then using @HeyGen hyperframes to generate videos?

@petergyang

Please someone explain to me why should I use Hermes if I already use Codex, Claude etc What could I do with it?

@T_Zahil

We just launched Sites into Codex! Software creation was always about more than writing code. Sites in Codex fundamentally gives the power of end-to-end software creation to every user, no matter their technical fluency. These Sites are fully deployed to a URL, private to workspaces, come with authentication, can have static files, and can store dynamic data in databases. It is in preview for business and enterprise teams and will be rolling out to all workspaces over the next day. Give it a try by typing @ Sites into Codex and ask it to build anything! This project took a massive amount of effort across hundreds of people at OpenAI - proud that we were able to get this out and excited to see what you all build with it!

@TheRohanVarma

State of Memory in Agent Harness

@mem0ai

I told codex to use http://sag.sh whenever I'm distracted and it needs my help to be unblocked, and ever once it a while I hear it talking to me, and it's the coolest thing ever. (e.g. for releases, that needs npm and is 1Password-gated)

@steipete

this codex prompt is literally the best thing ever if you are building react apps and want the cleanest possible code simply run "/goal run npx react-doctor@latest and fix issues until you get a score of 100. do it properly without taking any shortcuts" in codex thank me later

@weswinder

Introducing Impeccable 3.5, the best way to design in production: iterate on real UI with your AI agent, in the codebase you actually ship. Turns out many popular design skills, including Impeccable and Anthropic's frontend-design, weren't actually very good at...design (the workflow was valuable, but the output didn't magically make LLMs like GPT great designers). We measured it across thousands of generations: 74% of pages used the cream AI-default background, 76% reached for extreme letter-spacing, 90%+ failed the contrast floor. So we started fixing slop systematically, specific to each model. The skill now compiles rules for the exact defects each model makes, instead of shipping one generic file to everyone. The biggest jump is in GPT-5.5 and Codex. Also new: ◆ It now knows the difference between a new project and an existing one. Existing codebase, it reads your design system and preserves your identity. Greenfield, it seeds a fresh palette from 129 hand-curated anchors so every cold start doesn't drift to the same safe colors. ◆ Live Mode is now in beta, and works at two scales. Type a direction into the new Steer bar, or speak it, and the agent reads the whole page and edits it in place. Or pick a single element, steer it with a sub-command, live-edit any copy, and accept the variant straight back to source. Insert mode scaffolds brand-new elements between the ones already there. Recovery survives HMR, hidden heroes, and dev-tool overlays. ◆ A rebuilt anti-pattern detector. Torn off jsdom and onto a real CSS cascade resolver: roughly 20x faster, dependency-free, and now small enough to run inline inside the skill, not just the CLI and extension. 14 new rules, 41 total. ◆ The skill keeps itself current, checking once a day and offering to update. Plus /impeccable init and a bare /impeccable that reads your repo and tells you the next move. Free, open source. Claude Code, Codex, Cursor, and more.

@pbakaus

Excited to release 🌟Polar🌟, our Agent RL rollout infra for real-world harnesses. Be it Codex, Claude Code, OpenClaw, Hermes, or your self-made ones 🔥 -- Polar takes your harnesses directly as training environments without code change. Find a problem, design the harness, and train your own agents! 🧵

@billxbf

I am trying to understand why people would want Codex on their phone

@Ekaeoq

Still limited by compute, so I built a thing that runs codex in the cloud, powered by @Cloudflare firecracker boxes (and since that's not beefy enough for larger projects, tests are run via crabbox) Uses Ghostty ofc, via WebAssembly. Codex replicated itself, basically.

@steipete

Anthropic has dove an unreal job at papering the earth with enterprise contracts; every company I walk into *just* went “all in on Claude” about to onboard hundreds or thousands of employees while every cutting edge builder I know has moved to codex. Speed of adoption compounds both ways, if you’re just catching up that cc and opus 4.6 are great, and have decided you’re decided, you’ll be even slower to see the frontier because you’re locked in to one provider’s view of the world. If you’re always one fragile step into the future, bop around models, know how codex and cowork and ai studio are all going to intersect, etc etc etc you’ll widen the gap of adoption, and adoption > impact. To the fast & flexible go the spoils. (But gg Claude!)

@clairevo

Getting the most out of Codex

@jxnlco

You should build your dream macOS app right now! The "Build macOS App" plugin in Codex is wild. Used voice dictation to build an app I wanted for a while in <7 min (+6 min of tweaking). Couldn't believe how quickly it was done. Prompt is in the video and in the tweet below.

@dkundel

My laptop has become a “satellite device” since I started using Codex from my phone. And my Mac mini has become the “home.” It’s clunky, but the end state feels more like how we’re going to be working in the near future: I’m currently running the Codex app on 2 devices: 1. my MacBook 2. my Mac mini My laptop isn’t reliably connected to Wi-Fi enough, so I keep a Mac mini on my desk that is always connected. When I kick off new threads from my phone, I start them on the Mac mini. When I’m working from my desk, I run them there too. The cool part is that I’ve added my MacBook and Mac mini as connected devices to each other. That means I can start and resume threads from either device. So if I’m in a meeting but want to continue a thread on my laptop that was started on my Mac mini, I can do that. I’ve also set up mutual SSH for Mac mini <> MacBook, so files are easy to access from either side. It’s not fully seamless yet, but the model works. What this means: - I have an always-on Codex that is accessible from my phone, with its own dev environment - All threads are always accessible from any of the 3 devices - I can run heartbeat threads that stay on 24/7 It’s a little makeshift today, but the shape of it feels very real to me: Codex is no longer tied to whichever computer happens to be open in front of me. It starts to feel like something I can stay connected to across whatever device I’m using.

@nickbaumann_

Introducing MagicPath 2.0. MagicPath is now a multiplayer canvas for humans and agents like Codex or Claude Code to design and build with AI. Use your codebase, grab data from anywhere, and see the agents work in real time as a team while building fully functional prototypes.

@skirano

People freaking out over my AI spend. What nobody sees: Part of what excites me so much about working on OpenClaw is that I'm trying to answer the question: How would we build software in the future if tokens don't matter? We constant run ~100 codex in the cloud, reviewing every PR, every issue. If a fix on main lands, @clawsweeper will eventually find that 6 month old issue and close it with an exact reference. We run codex on every commit to review for security issues (as it's far too easy to miss). We run codex to de-duplicate issues and find clusters and send reports for the most pressing issues. We have agents that can recreate complex setups, spin up ephemeral

@steipete

Codex is for prosumers - here's why (and how) to switch

@omooretweets

Codex now works directly in Chrome on macOS and Windows. It’s even better at working with apps and sites in Chrome, and now works in parallel across tabs in the background without taking over your browser. To get started, install the Chrome plugin in the Codex app.

@OpenAI

Steal this Codex-native email workflow from @danshipper: 1. Write a one-page operating manual for your inbox Include: - VIPs - what to auto-archive - what to summarize - scheduling rules - escalation rules - your reply style 2. Open an agent-native email tool in Codex Dan uses @CoraComputer, which gives Codex two ways to act: - commands for archive/summarize/draft - a browser UI it can click through like a person 3. Work from a doc, not your inbox Dan has Codex create a running document for the inbox sweep. Every draft and decision goes there first. Then Dan replies inline: Spam. Archive. Reply asking for more details. Send the invite. Codex drafts in Cora with Dan’s writing style, then waits for approval before anything sends.

@every

Tough day for folks (DM me if I can help!) but if I found myself suddenly laid off from a company that cited AI as a cause, this is what I’d do: - download codex and Claude/code - say: “this was my job and how I spent my day, how can you help me automate it w skills” - push a dozen of those skills to GitHub - open up Claude design and make a portfolio site, with an “agent” per skill explaining how you built it, what tools it interacts with, etc.” give to lovable or v0 or whatever to publish - post that site and link to GitHub on LinkedIn - search “ai for <job>” and try all the new startups, form an opinion, message their founders - try something scary like openclaw, form an opinion - take a course in tactical AI in your field - build, share, build The gap in AI adoption is getting bigger. Start reskilling now while it’s early. The time is now.

@clairevo

Pets. Now in Codex. Use /pet to wake your pet.

@OpenAIDevs

Model-Harness-Fit

@nicbstme

The Most Fun I’ve Had Building Apps: GPT-5.5 + GPT-Image-2

@dkundel

Built clawsweeper, which runs 50 codex in parallel around the clock, scans issues/prs deep and closes what is already implemented or what makes no sense. Closed around 4000 issues today, a few thousand are in the pipeline. (rate limits are rough) https://github.com/openclaw/clawsweeper

@steipete

This is wild. OpenAI is just turned Codex into a full AI operator. Mac apps, images, automations, memory, and ongoing tasks... All inside one workflow. This dropped the same day as Claude Opus 4.7 🤯

@minchoi