Update readme introduction to clarify tool calling usage

Author: robertpiosik

README.md

@@ -23,9 +23,9 @@
 
 ## Introduction
 
-Autofill 15+ free chatbots, send API requests, or invoke agentic CLIs with **CWC**-constructed, [lean markdown prompts](#prompts) for common use cases. By limiting the use of tool calling, **CWC** creates a workflow that is at the frontier of speed, token efficiency, and accuracy.
+Autofill 15+ free chatbots, send API requests, or invoke agentic CLIs with **CWC**-constructed, [lean markdown prompts](#prompts) for common use cases. By limiting the use of tool calling\*, **CWC** creates a workflow that is at the frontier of speed, token efficiency, and accuracy.
 
-**Expect less _thinking_, quotas lasting 10x longer and mid-tier models getting the job done!**
+<sub>\*Only [Agentic Search](#-agentic-search) call tools for codebase discovery, on-demand.</sub>
 
 ## Prompts