I am trying to orchestrate a team of three agents for automated market research, but they keep getting stuck in a circular loop of "reviewing" each other's work without finishing the task. Does anyone have a reliable pattern for defining explicit "exit criteria" in CrewAI or LangGraph to ensure the process actually terminates with a final markdown report?
3 answers
To solve the infinite loop issue, you must implement a "Max Iterations" parameter or a "Manager Agent" with a deterministic override. In CrewAI, you can set max_iter for each task, but the real fix is defining a clear stop_sequence in your prompt. I’ve found that using a "Conditional Router" in LangGraph works best; it evaluates the output of the "Reviewer" agent and only routes back to the "Researcher" if specific keywords or data points are missing. Otherwise, it must force a transition to the "Finalizer" node. This architectural boundary is essential for production-grade agentic workflows where token costs can spiral if loops aren't governed strictly.
This is a common pain point. Have you tried implementing a "Human-in-the-Loop" gate where the agent has to pause and wait for a manual signal before it can trigger another round of revision?
Setting a hard limit on the number of steps is the easiest way. In your agent config, just cap the max_rpm and max_iterations to keep the execution within a predictable budget.
I agree with Cynthia; capping iterations is the first line of defense. It acts as a circuit breaker that prevents your API bill from exploding when the agents fail to reach a consensus.
Jeffrey, that’s exactly what we did for our legal-tech agent. We added a "Breakpoint" in the graph. The agent submits its draft to a UI, and the loop only continues if a human clicks "Request Revision." This not only stops the infinite loops but also serves as a critical safety check for compliance. It essentially turns the autonomous agent into a supervised "copilot," which is much safer for high-stakes tasks like market analysis or contract drafting where errors are costly.