Developers! You can now use Agent Skills directly with the OpenAI Responses API You can create a workflow in 2 simple steps:
1. Bundle the SKILL md + scripts + assets 2. Upload the bundle and mount into the shell tool That's it! The model can discover it and execute code
@reach_vb
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Integrating Agent Skills with OpenAI Responses API
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User experience comparing Codex 5.2 and 5.3 in plan mode
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anecdotally I’ve enjoyed the /plan mode w/ 5.3 codex quite a bit. long shot, but do you have a sample prompt where you enjoyed 5.2 over 5.3? (DMs open)
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Community reproduction confirms GPT-5.3-Codex token efficiency
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nice to see community repro of how token efficient GPT-5.3-Codex is! and we’re only getting started
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AI coding agents replacing manual initialization logic
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indeed what I find amusing is that you can encapsulate a lot of the logic from those billions of inits into single markdowns and codex or any other coding agent really would run with it like those never mattered in the first place
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Using Codex for Code Review and Instruction Following
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would love for you to give codex a try for this, team trained codex to specifically follow instructions and 100% of the code across OpenAI repos is reviewed via it
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Using Codex Directly via SSH in a VM
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specifically that you can SSH into a VM and use Codex there directly
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Using AI models to generate custom project rules
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I'd recommend pointing codex at your prior sessions and ask it to create custom rules for you that. That is way more effective and future proof.
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Using gpt-5.3-codex for creative game generation prompts
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gpt-5.3-codex with the prompt "build a game where a pelican rides a bicycle"
— Vaibhav (VB) Srivastav (@reach_vb) 6 février 2026
this is so much fun, I endorse this benchmark @simow! https://t.co/8fAWcidshP pic.twitter.com/7yiL3XVjeugpt-5.3-codex with the prompt "build a game where a pelican rides a bicycle" this is so much fun, I endorse this benchmark @simow
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Exploring the OpenAI Image Generation Skill
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Did you try the imagen skill? – in my biased opinion it's much more fun to play with https://
github.com/openai/skills/
blob/main/skills/.curated/imagegen/SKILL.md
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Integrating AI models and coding agents in configuration
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in your model config you can wire up GPT 5.2 Pro and then have codex just use that