Merge pull request #94286 from rh-tokeefe/OLS-1757

OLS-1757: mention tool calling for cluster interaction

Author: michaelryanpeter

modules/ols-cluster-interaction-overview.adoc

@@ -5,4 +5,11 @@
 [id="cluster-interaction-overview_{context}"]
 = Cluster interaction overview
 
-A large language model (LLM) is used with the {ols-long} service to generate responses to questions. Use the cluster interaction feature to enhance the knowledge available to the LLM with information about an {ocp-product-title} cluster. Providing cluster information, such as the namespaces or pods that the cluster contains, enables the LLM to generate highly customized responses for your environment.
+A large language model (LLM) is used with the {ols-long} service to generate responses to questions. Use the cluster interaction feature to enhance the knowledge available to the LLM with information about an {ocp-product-title} cluster. Providing cluster information, such as the namespaces or pods that the cluster contains, enables the LLM to generate highly customized responses for your environment.
+
+Function calling, also known as tool calling, is a capability that enables an LLM to interact with external APIs. {ols-long} uses the `auto` setting for the tool choice parameter of the LLM to make API calls to the LLM provider. To activate the cluster interaction feature in the {ols-long} service, tool calling must be enabled in the LLM provider.
+
+[NOTE]
+====
+Enabling tool calling can dramatically increase token usage. When you use public model providers, increased token usage can result in greater billing costs.
+====