diff --git a/srctag/cli.py b/srctag/cli.py
new file mode 100644
index 0000000..93709fb
--- /dev/null
+++ b/srctag/cli.py
@@ -0,0 +1,31 @@
+import chromadb
+import click
+
+from chromadb.utils.embedding_functions import SentenceTransformerEmbeddingFunction
+
+
+@click.group()
+def cli():
+    pass
+
+
+@cli.command()
+def prepare():
+    # try to embed
+    chromadb_cli = chromadb.Client()
+    collection = chromadb_cli.get_or_create_collection(
+        "testonly",
+        embedding_function=SentenceTransformerEmbeddingFunction(),
+    )
+    collection.add(
+        documents=["doc"],
+        metadatas=[{}],
+        ids=["id"],
+    )
+    assert collection.count() == 1
+
+    click.echo("ok.")
+
+
+if __name__ == '__main__':
+    cli()