Interface ToolHandler

crates/tools/src/tool_handler.rs:11–22

/// and returns `ToolResult` (struct-based output) instead of trait objects.
#[async_trait]
pub trait ToolHandler: Send + Sync {
    /// Return the tool's specification.
    fn spec(&self) -> &ToolSpec;

    /// Execute the tool with the given context and input.
    async fn handle(
        &self,
        ctx: ToolContext,
        input: serde_json::Value,
        progress: Option<ToolProgressSender>,
    ) -> Result<ToolResult, ToolCallError>;
}