RoleType is the type of the role of a message.

SafePoint describes at which boundary the agent may be cancelled. It is a bitmask: values can be combined with bitwise OR to accept multiple safe poin

Agent is the ReAct agent. ReAct agent is a simple agent that handles user messages with a chat model and tools. ReAct will call the chat model, if the

CancelMode specifies when an agent should be canceled. Modes can be combined with bitwise OR to cancel at multiple safe-points. For example, CancelAft

FileContentPartType defines the type of a multimodal file content part.

FunctionToolResultContentBlockType identifies which media field of a FunctionToolResultContentBlock is populated.

MessageParseFrom determines the source of the data to be parsed. default is content (Message.Content).

sub graph implement

Address represents a full, hierarchical address to a point in the execution structure.

AddressSegment represents a single segment in the hierarchical address of an execution point. A sequence of AddressSegments uniquely identifies a loca

AddressSegmentType defines the type of a segment in an execution address.

AgentAction represents actions that an agent can emit during execution. Action Scoping in Agent Tools: When an agent is wrapped as an agent tool (via

AgentCallbackHandler handles callbacks for agents using *schema.Message. Use ComponentOfAgent to filter callback events to agent-related events.

AgentCallbackInput represents the input passed to agent callbacks during OnStart. Use ConvAgentCallbackInput to safely convert from callbacks.Callback

AgentCallbackOutput represents the output passed to agent callbacks during OnEnd. Use ConvAgentCallbackOutput to safely convert from callbacks.Callbac

AgentCancelFunc is called to request cancellation of a running agent. It returns after the cancel request is committed; use the returned handle's Wait

AgentCancelInfo contains information about a cancel operation.

AgentCancelOption configures cancel behavior.

AgentConfig is the config for ReAct agent.

AgentMeta is the meta information of an agent within a multi-agent system.

Deprecated: Use ChatModelAgentMiddleware (interface-based Handlers) instead. AgentMiddleware will be removed in a future release. AgentMiddleware pro

AgentOption is the common option type for various agent and multi-agent implementations. For options intended to use with underlying graph or componen

AgentRunOption is the call option for adk Agent.

AgenticAgentCallbackHandler handles callbacks for agentic agents using *schema.AgenticMessage. Use ComponentOfAgenticAgent to filter callback events t

AgenticAllowedToolChoice specifies a list of allowed tools for the model.

AgenticCallbackInput is the input for the callback.

AgenticCallbackInput is the input for the agentic model callback.

AgenticCallbackOutput is the output for the callback.

AgenticCallbackOutput is the output for the agentic model callback.

AgenticChatTemplate formats variables into a list of agentic messages according to a prompt schema.

AgenticConfig is the config for the agentic model.

AgenticForcedToolChoice specifies a list of tools that the model must call.

AgenticMessagesTemplate is the interface for agentic messages template. It's used to render a template to a list of agentic messages. e.g. chatTempl

AgenticModelCallbackHandler is the handler for the agentic chat model callback.

AgenticPromptCallbackHandler is the handler for the agentic prompt callback.

AgenticToolsNodeCallbackHandlers defines optional callbacks for the Agentic Tools node lifecycle events.

AllowedMCPTool contains the information for identifying an MCP tool.

AllowedServerTool contains the information for identifying a server tool.

AllowedTool represents a tool that the model is allowed or forced to call. Exactly one of FunctionName, MCPTool, or ServerTool must be specified.

AnyGraph the identifiers for composable and compilable Graph[I, O]、Chain[I, O] in Eino.

Backend loads skills and provides metadata for tool description rendering.

Backend defines the file access interface for loading Agents.md files. Implementations can use local filesystem, remote storage, or any other backend.

Backend defines the storage interface for task persistence. Implementations can use local filesystem, remote storage, or any other storage backend.

Backend defines the interface provided by the user to implement file storage. It is used to save the content of large tool results to a persistent sto

Backend is a pluggable, unified file backend protocol interface. All methods use struct-based parameters to allow future extensibility without breaki

BackendFromFilesystemConfig contains configuration for NewBackendFromFilesystem.

BaseModel is the generic base model interface parameterized by message type M. It exposes two modes of interaction: - [BaseModel.Generate]: blocks unt

BaseTool provides the metadata that a ChatModel uses to decide whether and how to call a tool. Info returns a [schema.ToolInfo] containing the tool na

BreakLoopAction is a programmatic-only agent action used to prematurely terminate the execution of a loop workflow agent. When a loop workflow agent r

CallbackInput is the input for the callback.

CallbackInput is the input for the model callback.

CallbackInput is the input for the indexer callback.

CallbackInput is the input for the embedding callback.

CallbackInput is the input for the retriever callback.

CallbackInput is the input for the tool callback.

CallbackOutput is the output for the callback.

CallbackOutput is the output for the model callback.

CallbackOutput is the output for the indexer callback.

CallbackOutput is the output for the embedding callback.

CallbackOutput is the output for the retriever callback.

CallbackOutput is the output for the tool callback.

CancelError is sent via AgentEvent.Err when an agent is canceled. Use errors.As to match and extract *CancelError from event errors. Interrupt absorp

CancelHandle represents a cancel operation that can be waited on.

Chain is a chain of components. Chain nodes can be parallel / branch / sequence components. Chain is designed to be used in a builder pattern (should

ChainBranch represents a conditional branch in a chain of operations. It allows for dynamic routing of execution based on a condition. All branches wi