Ability to create & save Agentic Workflows

I watched a presentation by Andrew Ng - What's next for AI agentic workflows ft. Andrew Ng of AI Fund - https://www.youtube.com/watch?v=sal78ACtGTc

Agentic workflows significantly improve the quality of AI outputs. I would love the ability to create and write mutliple Agents (task-specific prompts) - some to generate outputs, and others to critique / improve on the output, and loop through a business process. Essentially multi-step programming a combination of tools and task-specific agents.