diff --git a/decrypt-cli/readme.md b/decrypt-cli/readme.md
new file mode 100644
index 0000000..8c06191
--- /dev/null
+++ b/decrypt-cli/readme.md
@@ -0,0 +1,25 @@
+# Build
+`cargo build --release`
+
+# How to use
+```
+> ../target/release/decrypt-cli -h
+Usage: decrypt-cli [OPTIONS] --pwd <password> --dir <PATH>
+
+Options:
+      --pwd <password>  graph password
+      --dir <PATH>      graph data dir path
+      --dst <PATH>      dir to store decrypted data [default: ./decrypted]
+  -h, --help            Print help
+```
+
+```
+> ../target/release/decrypt-cli --pwd <graph-password> --dir <path-to-encrypted-graph-dir>
+keys.edn: Keys { encrypted_secret_key: "-----BEGIN AGE ENCRYPTED FILE-----\nYWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IHNjcnlwdCBaRmJkNmZzUGtlbnE0S04v\nMzhCaXBBIDIwCkw0K3hZRm95cU9kdktwMTZQSGNOL3J0VTBsaWx0U2JCQTl1UFM0\nWlR4cDAKLS0tIHdaWkZ1M3kxa1BnSDRHK0JIZkRMcDMxS3RwSmhhczFRbGVWV3pV\nUHRKeXcK7qCa3dYt76DU2yeXGujkN1mMIoDIBl4XhVf2Q8x1UnftPuXMqP8Y9+2D\n21l1sd1iW6SdsNavtwFQXIqFUOuR/d0ztPx3Zkv8/rflpDPxkwweIX5FBAxx+r4A\nxNfNY1Rz5lRjgLRURR8vFA==\n-----END AGE ENCRYPTED FILE-----\n", _public_key: "age1gf0ez92csj597krdv05sgu7ge63j69lyt0d9m3tq55y96l5cyvrqcm6ysd" }
+secret key: AGE-SECRET-KEY-1HZVUHUUAPJEFAT46W67WC5QQHVDXQCD7UVRHJSR0DS2P3NEFJ4VSKVNTAG
+dst dir: "./decrypted"
+Generated "./decrypted/logseq/custom.css"
+Generated "./decrypted/logseq/config.edn"
+Generated "./decrypted/journals/2024_08_02.md"
+Generated "./decrypted/pages/contents.md"
+```
diff --git a/decrypt-cli/src/main.rs b/decrypt-cli/src/main.rs
index f56f4a9..809d902 100644
--- a/decrypt-cli/src/main.rs
+++ b/decrypt-cli/src/main.rs
@@ -1,8 +1,7 @@
 use clap::{value_parser, Arg, Command};
 use std::fs;
-use std::io;
 use std::path;
-use std::result::Result;
+
 #[derive(Debug)]
 struct Keys {
     encrypted_secret_key: String,
@@ -68,7 +67,7 @@ fn decrypt_file<P: AsRef<path::Path>>(
     println!("Generated {:?}", dst_path);
 }
 
-fn main() -> Result<(), io::Error> {
+fn main() {
     let matches = Command::new("decrypt cli")
         .arg(
             Arg::new("password")
@@ -124,6 +123,4 @@ fn main() -> Result<(), io::Error> {
             _ => {}
         }
     }
-
-    Ok(())
 }