
Kazuhiro Sera
2.9K posts

Kazuhiro Sera
@seratch
Developer Experience @OpenAI | ex-Slack SDK & DevRel, SmartNews VPoE | ja-jp 🇯🇵👉 @seratch_ja



Agents SDK 2.0 is underrated

The updated Agents SDK is now available in TypeScript, with support for sandbox agents and an open-source harness built in.





New post on the OpenAI Developer Blog: how we use skills for open-source maintenance, from planning and coding to testing and release-readiness checks with GitHub Actions. Hope it's useful for your projects too 🙌 developers.openai.com/blog/skills-ag…

Built a tactical turn-based RPG with Codex + GPT-5.4, using Playwright for testing and image-gen for the visuals. I grew up loving turn-based RPGs, so this was a fun one to build. Sharing a 45s demo below — it’s also featured in the @OpenAI GPT-5.4 blog post for anyone who wants more context. openai.com/index/introduc…




