Temporal workflows are my main building block for supporting agents working in multiple steps.

This is my goto SDK, it comes in multiple languages too. I'm going to be wrapping the Go ADK in CUE Nov/Dec, along with Dagger, and rebuild my personal harness from scratch which I worked on last Nov/Dec.

ADK has a graph/workflow concept too: https://adk.dev/graphs/

Not to be confused with ACP (Agent Client Protocol).