Function tools_condition 

pub fn tools_condition<S: State + Serialize>(
    state: &S,
    messages_field: &str,
) -> &'static str

Tools condition router function

Standard routing function for ReAct agents. Routes to “tools” node if last message has tool_calls, otherwise to END.

Arguments

• state - Graph state
• messages_field - Name of messages field in state

Returns

Target node name (“tools” or END)

Examples

graph.add_conditional_edges(
    "agent",
    |state: &MyState| tools_condition(state, "messages"),
    path_map! {
        "tools" => "tools",
        END => END,
    },
);