Module types 

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 Content, Part, and multimodal data types.

Structs

Content

A message in a conversation, consisting of a role and content parts.

FileDataPart

Data part for file references in a function response.

FunctionResponseData

Data for a function (tool) response, including optional multimodal parts.

InlineDataPart

Data part for inline binary content in a function response.

Enums

Part

A single part of a Content message.

Constants

MAX_INLINE_DATA_SIZE

Maximum allowed size for inline binary data (10 MB). Prevents accidental or malicious embedding of oversized payloads in Content parts.