Trait ToolLifecycleContributor 

pub trait ToolLifecycleContributor: Send + Sync {
    // Provided methods
    fn on_tool_start<'a>(
        &'a self,
        _input: ToolStartInput<'a>,
    ) -> ToolLifecycleFuture<'a> { ... }
    fn on_tool_finish<'a>(
        &'a self,
        _input: ToolFinishInput<'a>,
    ) -> ToolLifecycleFuture<'a> { ... }
}

Contributor for host-owned tool lifecycle gates.

Implementations should use these callbacks to observe tool execution without inspecting or rewriting tool input/output. Use ToolContributor for owning a tool implementation and hooks for policy that needs tool payloads.

Provided Methods

fn on_tool_start<'a>( &'a self, _input: ToolStartInput<'a>, ) -> ToolLifecycleFuture<'a>

Called once the host has accepted a tool call for execution.

fn on_tool_finish<'a>( &'a self, _input: ToolFinishInput<'a>, ) -> ToolLifecycleFuture<'a>

Called after the tool call returns, is blocked, fails, or is cancelled.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors