LangChain4j Tools

LangChain4j Tools and Function Calling Features

Metadata

Property	Value
Scheme	`langchain4j-tools`
Support Level	Stable
Labels	ai
Version	4.20.0 (CEQ 3.36.0)

Maven Dependency

<dependency>
    <groupId>org.apache.camel.quarkus</groupId>
    <artifactId>camel-quarkus-langchain4j-tools</artifactId>
    <version>4.20.0 (CEQ 3.36.0)</version>
</dependency>

Endpoint Properties

Name	Type	Required	Default	Description
`toolId`	string	✓		The tool id
`tags`	string	✓		The tags for the tools
`description`	string			Tool description
`exposed`	boolean		`true`	Whether the tool is automatically exposed to the LLM. When false, the tool is added to a searchable list and can be discovered via the tool-search-tool
`name`	string			Tool name
`parameters`	object			List of Tool parameters with optional metadata. Format: parameter.=, parameter..description=, parameter..required=, parameter..enum=. Example: parameter.location=string, parameter.location.description=The city and state, parameter.location.required=true, parameter.unit.enum=celsius,fahrenheit. This is a multi-value option with prefix: parameter.
`bridgeErrorHandler`	boolean		`false`	Allows for bridging the consumer to the Camel routing Error Handler, which mean any exceptions (if possible) occurred while the Camel consumer is trying to pickup incoming messages, or the likes, will now be processed as a message and handled by the routing Error Handler. Important: This is only possible if the 3rd party component allows Camel to be alerted if an exception was thrown. Some components handle this internally only, and therefore bridgeErrorHandler is not possible. In other situations we may improve the Camel component to hook into the 3rd party component and make this possible for future releases. By default the consumer will use the org.apache.camel.spi.ExceptionHandler to deal with exceptions, that will be logged at WARN or ERROR level and ignored.
`camelToolParameter`	object			Tool's Camel Parameters, programmatically define Tool description and parameters
`exceptionHandler`	object			To let the consumer use a custom ExceptionHandler. Notice if the option bridgeErrorHandler is enabled then this option is not in use. By default the consumer will deal with exceptions, that will be logged at WARN or ERROR level and ignored.
`exchangePattern`	enum			Sets the exchange pattern when the consumer creates an exchange.
`lazyStartProducer`	boolean		`false`	Whether the producer should be started lazy (on the first message). By starting lazy you can use this to allow CamelContext and routes to startup in situations where a producer may otherwise fail during starting and cause the route to fail being started. By deferring this startup to be lazy then the startup failure can be handled during routing messages via Camel's routing error handlers. Beware that when the first message is processed then creating and starting the producer may take a little time and prolong the total processing time of the processing.
`chatModel`	object			Chat Model of type dev.langchain4j.model.chat.ChatModel