Dev MCP

footerPageBuildItem.addBuildTimeData(
    "jokes",
    jokesBuildItem.getJokes(),
    "Some funny jokes that the user might enjoy"
);

footerPageBuildItem.addBuildTimeData(
    "jokes",
    jokesBuildItem.getJokes(),
    "Some funny jokes that the user might enjoy",
    true
);

@BuildStep(onlyIf = IsLocalDevelopment.class)
BuildTimeActionBuildItem createBuildTimeActions() {
    BuildTimeActionBuildItem item = new BuildTimeActionBuildItem(); (1)
    item.actionBuilder() (2)
            .methodName("getMyRecordedValue")
            .description("A well‑thought‑out description") (3)
            .runtime(runtimeValue) (4)
            .build();
    return item;
}

public class MyExtensionRPCService {

    @JsonRpcDescription("Update a specific logger's level in this Quarkus application") (1)
    public JsonObject updateLogLevel(
            @JsonRpcDescription("The logger name as defined in the logging implementation") String loggerName,
            @JsonRpcDescription("The new log level") String levelValue) { (2)
        // implementation…
    }
}

@BuildStep
JsonRPCProvidersBuildItem registerRpcService() { (1)
    return new JsonRPCProvidersBuildItem(MyExtensionRPCService.class); (2)
}

@BuildStep(onlyIf = IsLocalDevelopment.class)
BuildTimeActionBuildItem createBuildTimeActions() {
    BuildTimeActionBuildItem actions = new BuildTimeActionBuildItem();
    actions.actionBuilder()
            .methodName("updateProperty")
            .description("Update a configuration/property in the Quarkus application")   (1)
            .parameter("name", "The name of the configuration/property to update")       (2)
            .parameter("value", "The new value for the configuration/property")
            .function(map -> {
                Map<String, String> values = Collections.singletonMap(
                        map.get("name"), map.get("value"));
                updateConfig(values);
                return true;
            })
            .build();
    return actions;
}