Struct BeforeToolCallContext 

pub struct BeforeToolCallContext<'a> {
    pub assistant_message: &'a AgentMessage,
    pub assistant_content: &'a AssistantContent,
    pub tool_call: &'a ToolCall,
    pub args: &'a Value,
    pub messages: &'a [AgentMessage],
}

Read-only context handed to a BeforeToolCall hook.

Narrow on purpose: the hook gets the assistant message that requested the call, the call itself, and the validated arguments. It does not get a fat &mut LoopState.

Fields

assistant_message: &'a AgentMessage

assistant_content: &'a AssistantContent

tool_call: &'a ToolCall

args: &'a Value

messages: &'a [AgentMessage]