Uses of Annotation Interface
dev.langchain4j.Internal

Packages that use Internal

Package	Description
dev.langchain4j.agentic.declarative
dev.langchain4j.agentic.internal
dev.langchain4j.agentic.observability
dev.langchain4j.agentic.scope
dev.langchain4j.data.message
dev.langchain4j.guardrail
dev.langchain4j.http.client.log
dev.langchain4j.http.client.sse
dev.langchain4j.internal
dev.langchain4j.invocation
dev.langchain4j.mcp.protocol
dev.langchain4j.model.anthropic.internal.client
dev.langchain4j.model.anthropic.internal.mapper
dev.langchain4j.model.input.structured
dev.langchain4j.model.mistralai.internal.client
dev.langchain4j.model.mistralai.internal.mapper
dev.langchain4j.model.openai
dev.langchain4j.model.openai.internal
dev.langchain4j.model.openai.spi
dev.langchain4j.service
dev.langchain4j.service.guardrail
dev.langchain4j.service.memory
dev.langchain4j.service.output
dev.langchain4j.service.tool
dev.langchain4j.service.tool.search
dev.langchain4j.spi
dev.langchain4j.spi.agent.tool
dev.langchain4j.spi.data.document.parser
dev.langchain4j.spi.data.document.splitter
dev.langchain4j.spi.data.message
dev.langchain4j.spi.json
dev.langchain4j.spi.model.embedding
dev.langchain4j.spi.prompt
dev.langchain4j.spi.prompt.structured
dev.langchain4j.spi.services
dev.langchain4j.spi.store.embedding.inmemory
dev.langchain4j.store.embedding.inmemory

Uses of Internal in dev.langchain4j.agentic.declarative

Classes in dev.langchain4j.agentic.declarative with annotations of type Internal

Modifier and Type	Class	Description
class	DeclarativeUtil

Uses of Internal in dev.langchain4j.agentic.internal

Classes in dev.langchain4j.agentic.internal with annotations of type Internal

Modifier and Type	Interface	Description
interface	AgenticScopeOwner

Uses of Internal in dev.langchain4j.agentic.observability

Classes in dev.langchain4j.agentic.observability with annotations of type Internal

Modifier and Type	Class	Description
class	ComposedAgentListener

Methods in dev.langchain4j.agentic.observability with annotations of type Internal

Modifier and Type	Method	Description
void	AgentMonitor.setRootAgent(AgentInstance rootAgent)

Uses of Internal in dev.langchain4j.agentic.scope

Classes in dev.langchain4j.agentic.scope with annotations of type Internal

Modifier and Type	Interface	Description
interface	AgenticScopeJsonCodec	A codec for serializing and deserializing DefaultAgenticScope objects to and from JSON.
class	AgenticScopeRegistry	Singleton registry for managing AgenticScope instances.
class	DefaultAgenticScope

Uses of Internal in dev.langchain4j.data.message

Classes in dev.langchain4j.data.message with annotations of type Internal

Modifier and Type	Interface	Description
interface	ChatMessageJsonCodec	A codec for serializing and deserializing ChatMessage objects to and from JSON.
class	JacksonChatMessageJsonCodec

Uses of Internal in dev.langchain4j.guardrail

Classes in dev.langchain4j.guardrail with annotations of type Internal

Modifier and Type	Class	Description
class	AbstractGuardrailExecutor<C extends GuardrailsConfig, P extends GuardrailRequest<P>, R extends GuardrailResult<R>, G extends Guardrail<P,R>, E extends GuardrailExecutedEvent<P,R,G>, F extends GuardrailResult.Failure>	Abstract base class for GuardrailExecutors.

Uses of Internal in dev.langchain4j.http.client.log

Classes in dev.langchain4j.http.client.log with annotations of type Internal

Modifier and Type	Class	Description
class	LoggingHttpClient

Uses of Internal in dev.langchain4j.http.client.sse

Classes in dev.langchain4j.http.client.sse with annotations of type Internal

Modifier and Type	Class	Description
class	CancellationUnsupportedHandle
class	ServerSentEventListenerUtils
class	ServerSentEventParsingHandleUtils

Uses of Internal in dev.langchain4j.internal

Classes in dev.langchain4j.internal with annotations of type Internal

Modifier and Type	Class	Description
class	ChatRequestValidationUtils
class	CustomMimeTypesFileTypeDetector	Utility class to guess the mime-type of a file from its path or URI.
class	DefaultExecutorProvider
interface	ExceptionMapper
class	Exceptions	Utility methods for creating common exceptions.
class	InternalStreamingChatResponseHandlerUtils
@interface	JacocoIgnoreCoverageGenerated	Annotation to mark methods where JaCoCo coverage should be ignored.
class	Json	JSON helper class.
static interface	Json.JsonCodec	The abstract JSON codec interface.
class	JsonParsingUtils
class	JsonSchemaElementJsonUtils	Converts between JsonSchemaElement and JSON Schema Map representation with round-trip fidelity.
class	JsonSchemaElementUtils
class	Markers
final class	RetryUtils	Utility class for retrying actions.
class	ToolCallBuilder	Internal helper that helps to build partial and complete tool calls during streaming.
class	ToolSpecificationJsonUtils	Handles JSON serialization and deserialization of ToolSpecification.
class	Utils	Utility methods.
class	ValidationUtils	Utility class for validating method arguments.
class	VirtualThreadUtils	Utility class for working with virtual threads introduced in Java 21.

Uses of Internal in dev.langchain4j.invocation

Classes in dev.langchain4j.invocation with annotations of type Internal

Modifier and Type	Interface	Description
interface	LangChain4jManaged	A marker interface for components that are managed by LangChain4j framework.

Uses of Internal in dev.langchain4j.mcp.protocol

Classes in dev.langchain4j.mcp.protocol with annotations of type Internal

Modifier and Type	Class	Description
class	McpCallToolParams	Corresponds to the params of the CallToolRequest type from the MCP schema.
class	McpCallToolRequest	Corresponds to the CallToolRequest type from the MCP schema.
class	McpCallToolResult	Corresponds to the CallToolResult type from the MCP schema.
class	McpCancellationNotification	Corresponds to the CancelledNotification type from the MCP schema.
class	McpCancellationParams	Corresponds to the params of the CancelledNotification type from the MCP schema.
class	McpClientMessage
class	McpClientNotification	Corresponds to the JSONRPCNotification type from the MCP schema.
class	McpClientParams	Corresponds to the params of the JSONRPCRequest type from the MCP schema.
class	McpClientRequest	Corresponds to the JSONRPCRequest type from the MCP schema.
class	McpClientResponse	Corresponds to the JSONRPCResponse type from the MCP schema.
class	McpErrorResponse	Corresponds to the JSONRPCError type from the MCP schema.
class	McpGetPromptParams	Corresponds to the params of the GetPromptRequest type from the MCP schema.
class	McpGetPromptRequest	Corresponds to the GetPromptRequest type from the MCP schema.
class	McpImplementation	Corresponds to the Implementation type from the MCP schema.
class	McpInitializationNotification	Corresponds to the InitializedNotification type from the MCP schema.
class	McpInitializeParams	Corresponds to the params of the InitializeRequest type from the MCP schema.
class	McpInitializeRequest	Corresponds to the InitializeRequest type from the MCP schema.
class	McpInitializeResult	Corresponds to the InitializeResult type from the MCP schema.
class	McpJsonRpcMessage	Corresponds to the JSONRPCMessage type from the MCP schema.
class	McpListPromptsParams	Corresponds to the params of the ListPromptsRequest type from the MCP schema.
class	McpListPromptsRequest	Corresponds to the ListPromptsRequest type from the MCP schema.
class	McpListResourcesParams	Corresponds to the params of the ListResourcesRequest type from the MCP schema.
class	McpListResourcesRequest	Corresponds to the ListResourcesRequest type from the MCP schema.
class	McpListResourceTemplatesParams	Corresponds to the params of the ListResourceTemplatesRequest type from the MCP schema.
class	McpListResourceTemplatesRequest	Corresponds to the ListResourceTemplatesRequest type from the MCP schema.
class	McpListToolsParams	Corresponds to the params of the ListToolsRequest type from the MCP schema.
class	McpListToolsRequest	Corresponds to the ListToolsRequest type from the MCP schema.
class	McpListToolsResult	Corresponds to the ListToolsResult type from the MCP schema.
class	McpPingRequest	Corresponds to the PingRequest type from the MCP schema.
class	McpPingResponse	Corresponds to the EmptyResult type from the MCP schema (response to a PingRequest).
class	McpReadResourceParams	Corresponds to the params of the ReadResourceRequest type from the MCP schema.
class	McpReadResourceRequest	Corresponds to the ReadResourceRequest type from the MCP schema.
class	McpRootsListChangedNotification	Corresponds to the RootsListChangedNotification type from the MCP schema.
class	McpRootsListResponse	Corresponds to the ListRootsResult type from the MCP schema.
enum	McpServerMethod	Enum representing method names for server-initiated MCP messages.
class	McpSubscribeResourceRequest
class	McpUnsubscribeResourceRequest

Uses of Internal in dev.langchain4j.model.anthropic.internal.client

Classes in dev.langchain4j.model.anthropic.internal.client with annotations of type Internal

Modifier and Type	Class	Description
class	AnthropicClient
interface	AnthropicClientBuilderFactory
class	AnthropicCreateMessageOptions
class	DefaultAnthropicClient	Default implementation of AnthropicClient that provides methods to interact with the Anthropic API for creating messages, counting tokens, and listing models.
class	Json

Uses of Internal in dev.langchain4j.model.anthropic.internal.mapper

Classes in dev.langchain4j.model.anthropic.internal.mapper with annotations of type Internal

Modifier and Type	Class	Description
class	AnthropicMapper

Uses of Internal in dev.langchain4j.model.input.structured

Classes in dev.langchain4j.model.input.structured with annotations of type Internal

Modifier and Type	Class	Description
class	StructuredPromptProcessor	Utility class for structured prompts.

Uses of Internal in dev.langchain4j.model.mistralai.internal.client

Classes in dev.langchain4j.model.mistralai.internal.client with annotations of type Internal

Modifier and Type	Class	Description
class	DefaultMistralAiClient
class	MistralAiClient
interface	MistralAiClientBuilderFactory

Uses of Internal in dev.langchain4j.model.mistralai.internal.mapper

Classes in dev.langchain4j.model.mistralai.internal.mapper with annotations of type Internal

Modifier and Type	Class	Description
class	MistralAiMapper

Uses of Internal in dev.langchain4j.model.openai

Classes in dev.langchain4j.model.openai with annotations of type Internal

Modifier and Type	Class	Description
class	OpenAiStreamingResponseBuilder	This class needs to be thread safe because it is called when a streaming result comes back and there is no guarantee that this thread will be the same as the one that initiated the request, in fact it almost certainly won't be.

Uses of Internal in dev.langchain4j.model.openai.internal

Classes in dev.langchain4j.model.openai.internal with annotations of type Internal

Modifier and Type	Class	Description
class	OpenAiUtils
class	ParsedAndRawResponse<R>

Uses of Internal in dev.langchain4j.model.openai.spi

Classes in dev.langchain4j.model.openai.spi with annotations of type Internal

Modifier and Type	Interface	Description
interface	OpenAiAudioTranscriptionModelBuilderFactory	A factory for building OpenAiAudioTranscriptionModel.Builder instances.
interface	OpenAiChatModelBuilderFactory	A factory for building OpenAiChatModel.OpenAiChatModelBuilder instances.
interface	OpenAiEmbeddingModelBuilderFactory	A factory for building OpenAiEmbeddingModel.OpenAiEmbeddingModelBuilder instances.
interface	OpenAiImageModelBuilderFactory	A factory for building OpenAiImageModel.OpenAiImageModelBuilder instances.
interface	OpenAiLanguageModelBuilderFactory	A factory for building OpenAiLanguageModel.OpenAiLanguageModelBuilder instances.
interface	OpenAiModerationModelBuilderFactory	A factory for building OpenAiModerationModel.OpenAiModerationModelBuilder instances.
interface	OpenAiStreamingChatModelBuilderFactory	A factory for building OpenAiStreamingChatModel.OpenAiStreamingChatModelBuilder instances.
interface	OpenAiStreamingLanguageModelBuilderFactory	A factory for building OpenAiStreamingLanguageModel.OpenAiStreamingLanguageModelBuilder instances.

Uses of Internal in dev.langchain4j.service

Classes in dev.langchain4j.service with annotations of type Internal

Modifier and Type	Class	Description
class	AiServiceContext
class	AiServiceTokenStream
class	AiServiceTokenStreamParameters	Parameters for creating an AiServiceTokenStream.
class	InternalReflectionVariableResolver	Utility class responsible for resolving variable names and values for prompt templates by leveraging method parameters and their annotations.
class	TypeUtils

Methods in dev.langchain4j.service with annotations of type Internal

Modifier and Type	Method	Description
static <T> AiServices<T>	AiServices.builder(AiServiceContext context)

Uses of Internal in dev.langchain4j.service.guardrail

Classes in dev.langchain4j.service.guardrail with annotations of type Internal

Modifier and Type	Class	Description
class	AbstractGuardrailService	Responsible for managing and applying input and output guardrails to methods of a specified AI service class.

Uses of Internal in dev.langchain4j.service.memory

Classes in dev.langchain4j.service.memory with annotations of type Internal

Modifier and Type	Class	Description
class	ChatMemoryService

Uses of Internal in dev.langchain4j.service.output

Classes in dev.langchain4j.service.output with annotations of type Internal

Modifier and Type	Class	Description
class	ServiceOutputParser

Uses of Internal in dev.langchain4j.service.tool

Classes in dev.langchain4j.service.tool with annotations of type Internal

Modifier and Type	Class	Description
class	AiServiceTool	Represents a tool managed by an AI Service, combining: ToolSpecification — what is sent to the LLM ToolExecutor — what is called when the LLM invokes the tool Metadata that controls how the AI Service handles this tool (e.g., immediate return)
class	ToolService
class	ToolServiceContext
class	ToolServiceResult

Uses of Internal in dev.langchain4j.service.tool.search

Classes in dev.langchain4j.service.tool.search with annotations of type Internal

Modifier and Type	Class	Description
class	ToolSearchService

Uses of Internal in dev.langchain4j.spi

Classes in dev.langchain4j.spi with annotations of type Internal

Modifier and Type	Class	Description
class	ServiceHelper	Utility wrapper around ServiceLoader.load().

Uses of Internal in dev.langchain4j.spi.agent.tool

Classes in dev.langchain4j.spi.agent.tool with annotations of type Internal

Modifier and Type	Interface	Description
interface	ToolSpecificationJsonCodecFactory	A factory for creating ToolSpecificationJsonCodec instances through SPI.

Uses of Internal in dev.langchain4j.spi.data.document.parser

Classes in dev.langchain4j.spi.data.document.parser with annotations of type Internal

Modifier and Type	Interface	Description
interface	DocumentParserFactory	A factory for creating DocumentParser instances through SPI.

Uses of Internal in dev.langchain4j.spi.data.document.splitter

Classes in dev.langchain4j.spi.data.document.splitter with annotations of type Internal

Modifier and Type	Interface	Description
interface	DocumentSplitterFactory	A factory for creating DocumentSplitter instances through SPI.

Uses of Internal in dev.langchain4j.spi.data.message

Classes in dev.langchain4j.spi.data.message with annotations of type Internal

Modifier and Type	Interface	Description
interface	ChatMessageJsonCodecFactory	A factory for creating ChatMessageJsonCodec objects.

Uses of Internal in dev.langchain4j.spi.json

Classes in dev.langchain4j.spi.json with annotations of type Internal

Modifier and Type	Interface	Description
interface	JsonCodecFactory	A factory for creating Json.JsonCodec instances through SPI.

Uses of Internal in dev.langchain4j.spi.model.embedding

Classes in dev.langchain4j.spi.model.embedding with annotations of type Internal

Modifier and Type	Interface	Description
interface	EmbeddingModelFactory	A factory for creating EmbeddingModel instances through SPI.

Uses of Internal in dev.langchain4j.spi.prompt

Classes in dev.langchain4j.spi.prompt with annotations of type Internal

Modifier and Type	Interface	Description
interface	PromptTemplateFactory	A factory for creating prompt templates.
static interface	PromptTemplateFactory.Input	Interface for input for the factory.
static interface	PromptTemplateFactory.Template	Interface for a prompt template.

Uses of Internal in dev.langchain4j.spi.prompt.structured

Classes in dev.langchain4j.spi.prompt.structured with annotations of type Internal

Modifier and Type	Interface	Description
interface	StructuredPromptFactory	Represents a factory for structured prompts.

Uses of Internal in dev.langchain4j.spi.services

Classes in dev.langchain4j.spi.services with annotations of type Internal

Modifier and Type	Interface	Description
interface	AiServiceContextFactory
interface	AiServicesFactory
interface	TokenStreamAdapter

Uses of Internal in dev.langchain4j.spi.store.embedding.inmemory

Classes in dev.langchain4j.spi.store.embedding.inmemory with annotations of type Internal

Modifier and Type	Interface	Description
interface	InMemoryEmbeddingStoreJsonCodecFactory

Uses of Internal in dev.langchain4j.store.embedding.inmemory

Classes in dev.langchain4j.store.embedding.inmemory with annotations of type Internal

Modifier and Type	Interface	Description
interface	InMemoryEmbeddingStoreJsonCodec