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Agent

adk_rust

Trait Agent 

Source 
pub trait Agent: Send + Sync {
    // Required methods
    fn name(&self) -> &str;
    fn description(&self) -> &str;
    fn sub_agents(&self) -> &[Arc<dyn Agent>];
    fn run<'life0, 'async_trait>(
        &'life0 self,
        ctx: Arc<dyn InvocationContext>,
    ) -> Pin<Box<dyn Future<Output = Result<Pin<Box<dyn Stream<Item = Result<Event, AdkError>> + Send>>, AdkError>> + Send + 'async_trait>>
       where 'life0: 'async_trait,
             Self: 'async_trait;
}
Expand description

Core traits and types.

Always available regardless of feature flags. Includes:

  • Agent - The fundamental trait for all agents
  • Tool / Toolset - For extending agents with capabilities
  • Session / State - For managing conversation context
  • Event - For streaming agent responses
  • AdkError / Result - Unified error handling The fundamental trait for all ADK agents.

Every agent — whether a simple LLM wrapper, a multi-step workflow, or a composite orchestrator — implements this trait. The runtime invokes run with an InvocationContext and consumes the returned EventStream.

Required Methods§

Source

fn name(&self) -> &str

Returns the unique name of this agent.

Source

fn description(&self) -> &str

Returns a human-readable description of this agent’s purpose.

Source

fn sub_agents(&self) -> &[Arc<dyn Agent>]

Returns the child agents managed by this agent.

Source

fn run<'life0, 'async_trait>( &'life0 self, ctx: Arc<dyn InvocationContext>, ) -> Pin<Box<dyn Future<Output = Result<Pin<Box<dyn Stream<Item = Result<Event, AdkError>> + Send>>, AdkError>> + Send + 'async_trait>>
where 'life0: 'async_trait, Self: 'async_trait,

Executes the agent and returns a stream of events.

Dyn Compatibility§

This trait is dyn compatible.

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

Implementors§