diff --git a/Cargo.lock b/Cargo.lock
index 4e63698..0d5f6ea 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -221,6 +221,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "num-integer 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-traits 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "time 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
diff --git a/Cargo.toml b/Cargo.toml
index 6062c91..6c51400 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -27,7 +27,7 @@ serde = "1.0.104"
 serde_json = "1.0.44"
 serde_derive = "1.0.104"
 serde_yaml = "0.8.11"
-chrono = "0.4.10"
+chrono = { version = "0.4.10", features = ["serde"] }
 jsonwebtoken = "7.0.0-alpha.2"
 app_dirs = "1.2.1"
 ring = "0.16.9"
diff --git a/src/cli.yml b/src/cli.yml
index 9fc14cb..af4b97d 100644
--- a/src/cli.yml
+++ b/src/cli.yml
@@ -47,4 +47,8 @@ subcommands:
   - settings:
       about: "Manage the Lucid configuration file"
       author: *author
-      template: *template
\ No newline at end of file
+      template: *template
+  - dump:
+      about: Dump or restore any data of a node
+      author: *author
+      template: *template
diff --git a/src/kvstore.rs b/src/kvstore.rs
index 49eefd5..97199ad 100644
--- a/src/kvstore.rs
+++ b/src/kvstore.rs
@@ -1,18 +1,23 @@
 use block_modes::block_padding::ZeroPadding;
 use block_modes::{BlockMode, Cbc};
 use chashmap::CHashMap;
+use chrono::serde::ts_seconds::serialize as ts_seconds;
 use chrono::{DateTime, Utc};
 
 use serpent::Serpent;
 
 type SerpentCbc = Cbc<Serpent, ZeroPadding>;
 
-#[derive(Debug, Clone)]
+#[derive(Serialize, Deserialize, PartialEq, Debug, Clone)]
 pub struct KvElement {
+    #[serde(skip_serializing)]
     pub data: Vec<u8>,
     pub mime_type: String,
+    #[serde(serialize_with = "ts_seconds")]
     pub created_at: DateTime<Utc>,
+    #[serde(serialize_with = "ts_seconds")]
     pub updated_at: DateTime<Utc>,
+    #[serde(serialize_with = "ts_seconds")]
     pub expire_at: DateTime<Utc>,
     pub update_count: i32,
     pub locked: bool,
@@ -46,7 +51,7 @@ impl KvStore {
         kv
     }
 
-    pub fn set(&self, key: String, mut value: Vec<u8>) -> Option<KvElement> {
+    pub fn set(&self, key: String, mut value: Vec<u8>, mime_type: String) -> Option<KvElement> {
         // TODO: prepare iterative persistence
         if let Some(c) = &self.cipher {
             let cipher = SerpentCbc::new_var(&c.priv_key, &c.iv).unwrap();
@@ -55,7 +60,6 @@ impl KvStore {
         match &mut self.container.get_mut(&key) {
             Some(kv_element) => {
                 if !kv_element.locked {
-                    let mime_type = tree_magic::from_u8(value.as_ref());
                     kv_element.data = value;
                     kv_element.mime_type = mime_type;
                 }
diff --git a/src/main.rs b/src/main.rs
index db0ee94..14b8def 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,9 +1,11 @@
 #[macro_use]
 extern crate clap;
 #[macro_use]
-extern crate serde_derive;
-#[macro_use]
 extern crate log;
+extern crate serde;
+#[macro_use]
+extern crate serde_derive;
+extern crate serde_json;
 
 extern crate block_modes;
 extern crate hex;
diff --git a/src/server.rs b/src/server.rs
index 008a96f..c14884c 100644
--- a/src/server.rs
+++ b/src/server.rs
@@ -159,11 +159,12 @@ pub fn routes_filter(
         .or(fs::dir("assets/webui/dist"))
         .and(webui_enabled)
         .or(warp::get().map(move || warp::reply::html(WELCOME_PAGE)))
-        .and(warp::path::end());
+        .and(warp::path::end())
+        .with(warp::log("lucid::server::webui"));
 
     let robots = warp::path("robots.txt")
         .and(path::end())
-        .and(warp::get().map(|| "User-agent: *\nDisallow: /"));
+        .and(warp::get().map(|| "User-agent: *\nDisallow: /api"));
 
     let cors = warp::cors()
         .allow_methods(vec!["HEAD", "GET", "PUT", "POST", "PATCH", "DELETE"])