diff --git a/README.md b/README.md
index 6f97a7136f993..bcad88b7a4117 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,5 @@
 # tools.cpp
+tools.cpp is Rubra's fork of llama.cpp, offering inference of Rubra's function calling models (and others) in pure C/C++.
 
 ## tools.cpp quickstart
 1. build from source: