Trait ToolPreHook 

pub trait ToolPreHook: Send + Sync {
    // Required method
    fn before_execute<'life0, 'life1, 'life2, 'async_trait>(
        &'life0 self,
        tool_use: &'life1 ToolUse,
        context: &'life2 ToolContext,
    ) -> Pin<Box<dyn Future<Output = Result<PreHookDecision>> + Send + 'async_trait>>
       where Self: 'async_trait,
             'life0: 'async_trait,
             'life1: 'async_trait,
             'life2: 'async_trait;
}

Pluggable pre-execution hook for semantic tool validation.

Implement this to intercept tool calls before execution and validate call intent against current agent state (not just JSON schema). Hook is set via AgentContext::with_pre_execute_hook().

Required Methods

fn before_execute<'life0, 'life1, 'life2, 'async_trait>( &'life0 self, tool_use: &'life1 ToolUse, context: &'life2 ToolContext, ) -> Pin<Box<dyn Future<Output = Result<PreHookDecision>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait,

Called before tool execution to validate or reject the call.

Implementors