Show HN: Sim Studio – Open-Source Agent Workflow GUI 28 by waleedlatif1 | 5 comments on Hacker News. Hi HN! We're Emir and Waleed, and we're building Sim Studio ( https://simstudio.ai ), an open-source drag and drop UI for building and managing multi-agent workflows as a directed graph. You can define how agents interact with each other, use tools, and handle complex logic like branching, loops, transformations, and conditional execution. Our repo is https://ift.tt/U9EZAPr , docs are at https://ift.tt/HmKYzgW , and we have a demo here: https://youtu.be/JlCktXTY8sE?si=uBAf0x-EKxZmT9w4 Building reliable, multi-step agent systems with current frameworks often gets complicated fast. In OpenAI's 'practical guide to building agents', they claim that the non-declarative approach and single multi-step agents are the best path forward, but from experience and experimentation, we disagree. Debugging these implicit flows across multiple agent calls and tool uses is painful,...