Can you have multiple @router in a single flow?

[paultham4]

Hi,

As soon as I add a 2nd @router, the flow complains about "function does not have state".

Is it known that a flow can only have 1 router?

Please help, thanks.

[alexmercer-ai]

yeah multiple routers definitely work in crewAI flows - you just need each one wired up correctly.

the "function does not have state" error usually means the router method is not accessing state the right way. make sure you are using self.state inside the method, not trying to receive state as a parameter. also check that each @router is passing the correct preceding method as its argument.

minimal working example with two routers:

from crewai.flow.flow import Flow, listen, router, start
from pydantic import BaseModel

class MyState(BaseModel):
    step: str = ""
    outcome: str = ""

class MyFlow(Flow[MyState]):

    @start()
    def first_step(self):
        self.state.step = "completed"

    @router(first_step)
    def route_one(self):
        if self.state.step == "completed":
            return "branch_a"
        return "branch_b"

    @listen("branch_a")
    def branch_a_handler(self):
        self.state.outcome = "a"

    @router(branch_a_handler)
    def route_two(self):
        if self.state.outcome == "a":
            return "finish"
        return "retry"

    @listen("finish")
    def finish_handler(self):
        print("done")

things to double check:

• @router(some_method) - the argument is the method the router follows, not a string
• always access state via self.state, not as a function arg
• your state class needs to be a Pydantic BaseModel passed as a type param to Flow[YourState]

if you paste your actual code i can see exactly what is tripping it up