Module types 

A2A Protocol Types

Types aligned with the A2A specification (a2a.json schema)

Structs

AgentCapabilities

AgentCard

Agent Card - self-describing manifest

AgentProvider

AgentSkill

Artifact

An artifact produced by a task

FileContent

File content (bytes or URI)

JsonRpcError

JsonRpcRequest

JSON-RPC 2.0 Request

JsonRpcResponse

JSON-RPC 2.0 Response

Message

An A2A Message

MessageSendConfiguration

MessageSendParams

Message send parameters

PushNotificationConfig

Task

An A2A Task

TaskQueryParams

Task query parameters

TaskStatus

Task status information

Enums

MessageRole

Part

A part of a message

TaskState

A2A Task States

Constants

CONTENT_TYPE_NOT_SUPPORTED

INTERNAL_ERROR

INVALID_PARAMS

INVALID_REQUEST

METHOD_NOT_FOUND

PARSE_ERROR

PUSH_NOT_SUPPORTED

TASK_NOT_CANCELABLE

TASK_NOT_FOUND

UNSUPPORTED_OPERATION