Struct PreToolUseContext 

pub struct PreToolUseContext<'a> {
    pub turn: TurnIdentity<'a>,
    pub events: &'a mut Vec<EventMsg>,
    /* private fields */
}

Mutable policy boundary for one normalized model-requested tool call.

Fields

turn: TurnIdentity<'a>

events: &'a mut Vec<EventMsg>

Implementations

impl PreToolUseContext<'_>

pub fn call(&self) -> &ToolCall

Returns the call after any earlier middleware rewrites.

pub fn replace( &mut self, name: impl Into<String>, arguments: Value, ) -> Result<()>

Replaces the tool name and arguments while preserving the provider call ID.

pub fn push_input(&mut self, item: Value)

Adds durable provider-neutral context before this call at a tool-complete boundary.

pub fn deny(&mut self, reason: impl Into<String>) -> Result<()>

Denies the call. Later middleware may observe but cannot undo the denial.

pub fn denial(&self) -> Option<&str>

Returns the first denial made by the ordered middleware chain.