google--adk-python
wehub-resource-sync
ec2b666284
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Agent
The Agent (represented by BaseAgent in code) is a public interface in ADK that serves as a blueprint defining identity, instructions, and tools for an agentic entity. It inherits from BaseNode and can be part of a larger workflow or act as a standalone agent.
Key Characteristics
- Name: Unique identifier within the agent tree. Must be a valid Python identifier and cannot be "user".
- Description: Capability description used by the model for delegation.
- Sub-agents: Support for hierarchical agent structures.
- Callbacks: Supports
before_agent_callbackandafter_agent_callbackfor intercepting lifecycle events.
Entrance Methods
Important
Since agents now extend
BaseNode, the originalrun_asyncentrance method is considered deprecated. Developers should rely on the newrunmethod fromBaseNodeto execute agents as workflow nodes.
run (Preferred Entrance)
The method inherited from BaseNode to execute the agent.
run_async (Deprecated)
Legacy entry method to run an agent via text-based conversation.
Arguments:
parent_context:InvocationContext, the invocation context of the parent agent.
Yields:
Event: The events generated by the agent.
run_live
Entry method to run an agent via video/audio-based conversation.
Arguments:
parent_context:InvocationContext, the invocation context of the parent agent.
Yields:
Event: The events generated by the agent.
from_config
Class method to create an agent from a configuration object.