Uses of Interface
dev.langchain4j.service.tool.ToolExecutionErrorHandler

Packages that use ToolExecutionErrorHandler

Package	Description
dev.langchain4j.agentic.agent
dev.langchain4j.service
dev.langchain4j.service.tool

Uses of ToolExecutionErrorHandler in dev.langchain4j.agentic.agent

Methods in dev.langchain4j.agentic.agent with parameters of type ToolExecutionErrorHandler

Modifier and Type	Method	Description
B	AgentBuilder.toolExecutionErrorHandler(ToolExecutionErrorHandler toolExecutionErrorHandler)	Sets the handler invoked when a tool execution throws an exception.

Uses of ToolExecutionErrorHandler in dev.langchain4j.service

Methods in dev.langchain4j.service that return ToolExecutionErrorHandler

Modifier and Type	Method	Description
ToolExecutionErrorHandler	AiServiceTokenStreamParameters.toolExecutionErrorHandler()

Methods in dev.langchain4j.service with parameters of type ToolExecutionErrorHandler

Modifier and Type	Method	Description
AiServices<T>	AiServices.toolExecutionErrorHandler(ToolExecutionErrorHandler handler)	Configures the handler to be invoked when errors occur during tool execution.
AiServiceTokenStreamParameters.Builder	AiServiceTokenStreamParameters.Builder.toolExecutionErrorHandler(ToolExecutionErrorHandler handler)

Uses of ToolExecutionErrorHandler in dev.langchain4j.service.tool

Methods in dev.langchain4j.service.tool that return ToolExecutionErrorHandler

Modifier and Type	Method	Description
ToolExecutionErrorHandler	ToolService.asyncExecutionErrorHandler()	The ToolExecutionErrorHandler for the asynchronous AI Service modes (CompletableFuture, reactive Flow.Publisher): a user-configured handler if present, otherwise the async default, which fails the AI Service invocation (rather than hiding the error from the developer by sending it to the LLM).
ToolExecutionErrorHandler	ToolService.executionErrorHandler()
static ToolExecutionErrorHandler	ToolExecutionErrorHandler.failInvocation()	Returns a handler that rethrows the error, failing the AI Service invocation.
static ToolExecutionErrorHandler	ToolExecutionErrorHandler.failInvocationUnlessVisibleToLlm()	Returns a handler that sends ToolErrorVisibleToLlm.messageForLlm() to the LLM when the tool threw an exception implementing ToolErrorVisibleToLlm, and fails the AI Service invocation for every other exception.
static ToolExecutionErrorHandler	ToolExecutionErrorHandler.sendExceptionMessageToLlm()	Returns a handler that sends the message of the error to the LLM as the result of the tool execution, giving the LLM a chance to react to it (for example, by trying another tool or by telling the user what went wrong).
static ToolExecutionErrorHandler	ToolExecutionErrorHandler.sendGenericMessageToLlmUnlessVisibleToLlm(String genericMessage)	Returns a handler that sends ToolErrorVisibleToLlm.messageForLlm() to the LLM when the tool threw an exception implementing ToolErrorVisibleToLlm, and the given generic message for every other exception.

Methods in dev.langchain4j.service.tool with parameters of type ToolExecutionErrorHandler

Modifier and Type	Method	Description
static ToolExecutionResult	ToolService.executeWithErrorHandling(ToolExecutionRequest toolRequest, ToolExecutor toolExecutor, InvocationContext invocationContext, ToolArgumentsErrorHandler argumentsErrorHandler, ToolExecutionErrorHandler executionErrorHandler)
void	ToolService.executionErrorHandler(ToolExecutionErrorHandler handler)