The physical world is AI's next dataset.

impl Guest for Tools {
    fn list_tools() -> Vec<ToolInfo> {
        vec![ToolInfo {
            name: "vend".to_string(),
            description: "Drop one item from a slot.".to_string(),
            parameters_schema: SLOT_SCHEMA.to_string(),
        }]
    }

    fn execute(name: String, args: String) -> Result<ToolResult, String> {
        match name.as_str() {
            // The host signs and attests the result.
            "vend" => vend(&args),
            other => Err(format!("unknown tool {other}")),
        }
    }
}