Sam Altman has been teasing a big development for its DevDay. As the leaks suggest, OpenAI is going to announce and Agent Builder that lets you connect MCPs and build agentic workflows. You will be able to build agents and use logic, data, and other elements via drag & drop. You can upload a .widget file to link a widget to your workflow.
BREAKING 🚨: OpenAI is planning to announce Agent Builder on DevDay. Agent builder will let users build their agentic workflows, connect MCPs, ChatKit widgets and other tools.
This is one of the smoothest Agent builder canvases I’ve used so far.
The year of Agents 🤖 pic.twitter.com/BmSALOATGM
— TestingCatalog News 🗞 (@testingcatalog) October 5, 2025
This has the potential to change the game for folks who build their own complex agents. Now they can use it using OpenAI’s tools without needing additional services.
[HT]
