Struct A2aTaskCheckTool 

pub struct A2aTaskCheckTool;

Tool that checks the current state and artifacts of an A2A task.

Designed to be used together with a2a_call in async_mode: true, allowing the agent to submit a long-running task and check on it later, optionally combined with schedule_wakeup for periodic polling.

Implementations

impl A2aTaskCheckTool

pub fn new() -> Self

Trait Implementations

impl Default for A2aTaskCheckTool

fn default() -> Self

Returns the “default value” for a type.

impl Tool for A2aTaskCheckTool

fn spec(&self) -> ToolSpec

fn side_effect_class(&self) -> ToolSideEffect

Classify this tool’s observable side-effects. Default is the most conservative value (External) so any unannotated tool is treated as risky on resume. Override to ReadOnly or Mutating for built-in tools; MCP tools derive this from their annotations.

fn execute<'life0, 'async_trait>( &'life0 self, arguments: Value, ) -> Pin<Box<dyn Future<Output = Result<String>> + Send + 'async_trait>>

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

fn is_readonly(&self) -> bool

Convenience: a tool is read-only iff it classifies as ReadOnly. Used by the parallel-dispatch path in agent.rs. Override only if you have an unusual reason (you almost never should — override side_effect_class instead and let this default through).

fn is_readonly_for_args(&self, _arguments: &Value) -> bool

Like is_readonly but can inspect the call-time arguments.