diff --git a/README.md b/README.md
index 8811eef..5a067fc 100644
--- a/README.md
+++ b/README.md
@@ -16,5 +16,11 @@ yarn pkg
 yarn install-mac
 ```
 
-# FlatDirectory Contract
-https://github.com/ethstorage/evm-large-storage
\ No newline at end of file
+# git3 uri protocol
+```
+git3://[sender_wallet]@[contract_address or NS]:[chain_id]/<repo_name>
+```
+
+- [sender_wallet] Optional, the default value is `default`
+- [contract_address or NS] Optional, the default value is `git3.w3q`
+- [chain_id] Optional, the default value is 3334