diff --git a/docs/references/toolkit.md b/docs/references/toolkit.md
new file mode 100644
index 000000000..e54e6c759
--- /dev/null
+++ b/docs/references/toolkit.md
@@ -0,0 +1,5 @@
+# Toolkit
+
+Here you can find the toolkit functions on top of DataChain for common DS/ML operations (e.g. train/test split). Import these functions from `datachain.toolkit`.
+
+::: datachain.toolkit
diff --git a/mkdocs.yml b/mkdocs.yml
index 2917a15bd..8380b0850 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -74,6 +74,7 @@ nav:
           - UDF: references/udf.md
           - Torch: references/torch.md
           - Functions: references/func.md
+          - Toolkit: references/toolkit.md
       - 🤝 Contributing: contributing.md
 
   - DataChain Website ↗: https://datachain.ai" target="_blank"