Comment by jumski

Yeah, I also found this a bit unintuitive at first. I’m building a workflow engine myself (https://pgflow.dev/pgflow, not released yet), and I’ve been thinking a lot about how to model the DSL for the graph and decided to make dependencies explicit and use method chaining for expansion with other step types.

Here’s how it would look like in my system:

  new Flow<string>()  
    .step("llm", llmStepHandler)  
    .step("decider", ["llm"], deciderStepHandler)  
    .step("agentOne", ["decider"], agentOneStepHandler)  
    .step("agentTwo", ["decider"], agentTwoStepHandler)  
    .step("workflow", ["agentOne", "agentTwo"], workflowStepHandler);  

Mine is a DAG, so more constrained than the cyclic graph Mastra supports (if I understand correctly).