Trait Tool 

pub trait Tool {
    // Required method
    fn call<'life0, 'async_trait>(
        &'life0 self,
        args: String,
    ) -> Pin<Box<dyn Future<Output = String> + Send + 'async_trait>>
       where Self: 'async_trait,
             'life0: 'async_trait;

    // Provided method
    fn call_batch<'life0, 'async_trait>(
        &'life0 self,
        args: Vec<ToolCall>,
    ) -> Pin<Box<dyn Future<Output = Vec<ToolMessage>> + Send + 'async_trait>>
       where Self: Sync + 'async_trait,
             'life0: 'async_trait { ... }
}

A trait for tools that can be called with JSON string arguments.

Users must provide the call method. The framework auto-provides call_batch to run tools in parallel. At runtime, different tool executors may call call or call_batch in different ways. Users can override call_batch to customize this behavior.

Required Methods

fn call<'life0, 'async_trait>( &'life0 self, args: String, ) -> Pin<Box<dyn Future<Output = String> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait,

Calls the tool with JSON arguments and returns the result.

Provided Methods

fn call_batch<'life0, 'async_trait>( &'life0 self, args: Vec<ToolCall>, ) -> Pin<Box<dyn Future<Output = Vec<ToolMessage>> + Send + 'async_trait>>

where Self: Sync + 'async_trait, 'life0: 'async_trait,

Executes multiple tool calls in parallel. Override to customize execution behavior.

Implementors