Struct BeforeToolCallEvent 

pub struct BeforeToolCallEvent {
    pub tool_use: ToolUse,
    pub invocation_state: HashMap<String, Value>,
    pub cancel_tool: Option<String>,
}

Event triggered before a tool is invoked.

Fields

tool_use: ToolUse

invocation_state: HashMap<String, Value>

cancel_tool: Option<String>

Implementations

impl BeforeToolCallEvent

pub fn new(tool_use: ToolUse) -> Self

pub fn with_state(self, state: HashMap<String, Value>) -> Self

pub fn cancel(&mut self, message: impl Into<String>)

Cancel the tool call with a message.

Trait Implementations

impl Clone for BeforeToolCallEvent

fn clone(&self) -> BeforeToolCallEvent

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for BeforeToolCallEvent

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl HookEventBase for BeforeToolCallEvent

fn as_any(&self) -> &dyn Any

Returns the event as Any for downcasting.

fn as_any_mut(&mut self) -> &mut dyn Any

Returns the event as mutable Any for downcasting.

fn should_reverse_callbacks(&self) -> bool

Whether callbacks should be invoked in reverse order (for cleanup events).

impl Interruptible for BeforeToolCallEvent

fn interrupt_id(&self, name: &str) -> String

Generate a unique interrupt ID for before tool call events.

Format: v1:before_tool_call:{tool_use_id}:{uuid5(name)}