PretzelGraph 🥨 - open source visual graph agent runtime

Hi everyone, I'm Roland, a solo founder building PretzelGraph, an open source graph runtime for agents.

Most workflow and agent tools either hide the agent loop inside a node you cant open, or have you write it in code. In PretzelGraph the agent loop is the graph: you build it on a canvas, watch every cycle run, and reuse the whole agent as a single node in other workflows.

Because the loop is open, you can change how your agent works, not just what it's told. For example:

• Intercept tool calls before they run: log them, edit them, or send them to a human for approval

• Plug in your own compaction strategy, summarizing or trimming the conversation inside the loop as it grows

• Change when the agent stops, retries, or hands off to another agent

It's self-hostable with one command, and I'm planning a Product Hunt launch soon.

I'd love to hear what you'd change inside your own agents' loops if you could, and any feedback on the product.

GitHub: https://github.com/RolandTeslaru/Pretzel-Graph

Website: https://www.pretzelgraph.ai