AI Services LLMs Document Stores Additional tools Advanced topics LangChain4j dev // Example of an EmailService tool method package import import import import import import @ApplicationScoped public class EmailService class EmailService @Inject @Tool "send the provided content via email" public void sendAnEmail(String content) public void sendAnEmail (String content) "Sending an email: " "sendMeALetter@quarkus.io" "A poem for you" java Copied! @RegisterAiService .class)public interface MyAiService class public interface MyAiService // ... java Copied! @Tool "get the customer name for the given customerId" public String getCustomerName(long id) public getCustomerName (long id) long return "id" java Copied! @Tool "add a and b" @NonBlocking int sum(int a, int b) int sum (int a, int b) int int return java Copied! @Tool "get the customer name for the given customerId" public Uni getCustomerName(long id) public getCustomerName (long id) long // ... java Copied! @Tool "get the customer name for the given customerId" @RunOnVirtualThread public String getCustomerName(long id) public getCustomerName (long id) long return "id" java Copied! @UserMessage "..." @ToolBox .class, CustomerRepository.class})Multi detectAmountFraudForCustomerStreamed(long customerId) class CustomerRepository class Multi String detectAmountFraudForCustomerStreamed long customerId java Copied! @RegisterAiService .class)public interface MyAiService class public interface MyAiService // Service methods java Copied! @ApplicationScoped public class MyToolProviderSupplier implements Supplier class MyToolProviderSupplier implements Supplier ToolProvider @Inject @Override public ToolProvider get() public get () return java Copied! @ApplicationScoped public class MyCustomToolProvider implements ToolProvider class MyCustomToolProvider implements ToolProvider @Inject @Override public ToolProviderResult provideTools(ToolProviderRequest request) public provideTools (ToolProviderRequest request) boolean "booking" if return // No tools return // Provide booking tool private ToolProviderResult buildToolProviderResult(List