Designing loops with Fable 5 Mythos-class models like Claude Fable 5 have changed the way many of us work at Anthropic. I want to share two tips for getting the most out of this class of models. Self-correction loops There’s been a lot of interest in loops recently. @bcherny […↗

Claude Fable 5 changed how we work on the Claude Code team day to day. We used to verify that Claude did the work right. Now we verify that it's doing the right work. Here’s the 3 biggest changes:↗

Shipping code and announcing it should be one workflow. New in compound-engineering: /ce-promote reads your PR and turns shipped work into copy-pasteable launch copy for X, LinkedIn, changelogs, and more. Even better: When @TrySpiral is connected, it writes the posts in your vo…↗

A guide to /goal 🥅 We launched the goal mode (or /goal) as a way to help you have Codex drive towards a concrete outcome. When you set a goal Codex will continue to work until the goal is achieved, whether that takes hours or days. Some people have used Codex to work on a sing…↗

If you know one thing about every right now, it's that we're heavily Codex pilled. So we wrote a guide on how to use Codex for knowledge work as well as we do. You dont want to miss this one... every.to/guides/codex-f…↗

Private MCP servers 🤝 OpenAI products Your team can keep MCP servers inside your network while ChatGPT, Codex, and the Responses API connect through outbound-only HTTPS. 🔗 developers.openai.com/api/docs/guide…↗

codex power-user best practices: - a few different "pulse" threads that run every morning to check the status of stuff i care about, e.g. proof metrics, all company meetings, etc - a "log" thread for ongoing, everyday activity i want to track. for me that's my "writing log"—wan…↗

Google's free 5-day AI Agents course is back, and this time it's all about vibe coding with agents. The last one had 1.5M learners. Here's what the course covers: → Day 1: Agents + vibe coding. Build agents with Google Agents CLI and your coding agent. → Day 2: Tools + intero…↗

I wrote up how I built the shitty robot so you can too. This was a fun project that will keep on giving. Thanks to all the open weights folks out there, without whom this would not have been possible. mariozechner.at/posts/2026-05-…↗

Some tips to help agents understand your codebase: 1. The source code either needs to be the source of truth, or have something legible as a path to the source. For example, if marketing site content is actually stored in a CMS, you need to either delete the CMS and move that co…↗

the basic trick to using Claude Code for non-technical work is to put a bunch of files in a folder and tell it can write scripts + make HTML↗

How to use Codex's computer use in EU for europoors better than nordvpn - download Tailscale on your device(s) - go to settings - configure mullvad - pay 5$ a month - set exit node US based - now you have a VPN for each node - Albania for ur tv (no ads on entire home network)↗

UPDATE: Came up with an even better version of this prompt after the feedback Ask Codex to look across your sessions, Memories, and Chronicle, identify patterns, reuse what already exists, and only create the smallest useful skill, subagent, or automation. "Look back over my re…↗

working on a "take this vibecoded slop app and make it a production-ready, e2e tested, maintainable, parallelizable agent repo" skill. this thing ran for ~16 hours yesterday and made 103 commits all told and i ended up with exactly the same app but instead of fragile mvp it no…↗

Here's how you can build a functional and interactive component library with Codex and MagicPath running as an extended canvas in less than 5 minutes. Pretty crazy.↗

okay this is going kinda viral and tbh my original text was kind of messy, so here's a second pass with the help of Claude: -- Implement <SPEC>. As you work maintain a running implementation-notes.html file that captures anything I should know about how the implementation diverg…↗

a prompt I've been using a lot recently: implement <SPEC> and while you do, keep a running implementation-notes.html file (or markdown) with decisions you had to make weren't in the spec, things you had to change, tradeoffs you had to make or anything else I should know↗

killer prompt "can you repeat back to me the outcome that I am expecting?"↗

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 Ma…↗

Using Codex Goals Effectively Perceptive Codex users have noticed that the /goal command is now available in the Codex app - just start your prompt with /goal, and specify what you want your agent to do. This will trigger Codex to loop continuously until it achieves your goal.…↗

I gave a viral talk recently, and @swyx asked me to put something together to explain how I did it - to help future AIE speakers and anyone who wants to learn. I am, oddly, extremely qualified to do this because I spent 6 years as a voice coach. So I've not only given countless…↗

"Technical writing completely changed my life." - @trq212 In under 2 years, Thariq (@AnthropicAI) cracked the code on writing technical articles that consistently hit 1M+ views. In this 20-min workshop, he breaks down: → his exact writing workflow → the tactics behind article…↗

Easy recipe you can steal for the animated side-notes on GTM Atlas by @attio → rough-notation by @preetster for the animated brackets → tegaki by @gkurttech for the hand-drawn text → IntersectionObserver to trigger on view↗

@bentossell for rendering, prefer text/plain on multipart emails first. for newsletters where HTML is unavoidable, @mozilla/readability strips the noise better than most parsers↗

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 use…↗

developers.openai.com/codex/migrate↗

pro tip: just run this in your terminal and your computer wont sleep↗

AI helps you move faster, but it just accelerates software entropy. Here's how to de-slop a codebase ruined by AI, with one skill:↗

Ridiculous product unlock: Take screenshots of your UI and paste them into ChatGPT. Then paste in the PRD you just wrote for a new feature. Ask it to mock up the new feature.↗

x.com/i/article/2046…↗