diff --git a/imag-tag/src/main.rs b/imag-tag/src/main.rs
index 70fd892b..e45479b3 100644
--- a/imag-tag/src/main.rs
+++ b/imag-tag/src/main.rs
@@ -9,8 +9,156 @@ extern crate libimagrt;
 extern crate libimagtag;
 extern crate libimagutil;
 
+use std::process::exit;
+
+use libimagrt::runtime::Runtime;
+use libimagtag::tagable::Tagable;
+
 mod ui;
+mod util;
+
+use ui::build_ui;
+use util::build_entry_path;
+
+use libimagutil::trace::trace_error;
 
 fn main() {
-    println!("Hello, world!");
+    let name = "imag-store";
+    let version = &version!()[..];
+    let about = "Direct interface to the store. Use with great care!";
+    let ui = build_ui(Runtime::get_default_cli_builder(name, version, about));
+    let rt = {
+        let rt = Runtime::new(ui);
+        if rt.is_ok() {
+            rt.unwrap()
+        } else {
+            println!("Could not set up Runtime");
+            println!("{:?}", rt.err().unwrap());
+            exit(1);
+        }
+    };
+
+    rt.init_logger();
+
+    debug!("Hello. Logging was just enabled");
+    debug!("I already set up the Runtime object and build the commandline interface parser.");
+    debug!("Lets get rollin' ...");
+
+    let id = rt.cli().value_of("id").unwrap(); // enforced by clap
+    rt.cli()
+        .subcommand_name()
+        .map_or_else(
+            || {
+                let add = rt.cli().value_of("add");
+                let rem = rt.cli().value_of("remove");
+                let set = rt.cli().value_of("set");
+
+                alter(&rt, id, add, rem, set);
+            },
+            |name| {
+                debug!("Call: {}", name);
+                match name {
+                    "list" => list(id, &rt),
+                    _ => {
+                        warn!("Unknown command");
+                        // More error handling
+                    },
+                };
+            });
 }
+
+fn alter(rt: &Runtime, id: &str, add: Option<&str>, rem: Option<&str>, set: Option<&str>) {
+    let path = build_entry_path(rt, id);
+    debug!("path = {:?}", path);
+    rt.store()
+        // "id" must be present, enforced via clap spec
+        .retrieve(path)
+        .map(|mut e| {
+            add.map(|tags| {
+                let tags = tags.split(",");
+                for tag in tags {
+                    info!("Adding tag '{}'", tag);
+                    e.add_tag(String::from(tag)).map_err(|e| trace_error(&e));
+                }
+            });
+
+            rem.map(|tags| {
+                let tags = tags.split(",");
+                for tag in tags {
+                    info!("Removing tag '{}'", tag);
+                    e.remove_tag(String::from(tag)).map_err(|e| trace_error(&e));
+                }
+            });
+
+            set.map(|tags| {
+                info!("Setting tags '{}'", tags);
+                let tags = tags.split(",").map(String::from).collect();
+                e.set_tags(tags);
+            });
+        })
+        .map_err(|e| {
+            info!("No entry.");
+            debug!("{}", e);
+        });
+}
+
+fn list(id: &str, rt: &Runtime) {
+    let path = build_entry_path(rt, id);
+    debug!("path = {:?}", path);
+
+    let entry = rt.store().retrieve(path.clone());
+    if entry.is_err() {
+        debug!("Could not retrieve '{:?}' => {:?}", id, path);
+        warn!("Could not retrieve entry '{}'", id);
+        trace_error(&entry.err().unwrap());
+        exit(1);
+    }
+    let entry = entry.unwrap();
+
+    let scmd = rt.cli().subcommand_matches("list").unwrap(); // safe, we checked in main()
+
+    let json_out = scmd.is_present("json");
+    let line_out = scmd.is_present("linewise");
+    let sepp_out = scmd.is_present("sep");
+    let mut comm_out = scmd.is_present("commasep");
+
+    let flags = vec![json_out, line_out, comm_out, sepp_out];
+
+    if flags.iter().filter(|x| **x).count() > 1 {
+        // More than one flag passed
+        info!("Cannot do more than one thing");
+        exit(1);
+    }
+
+    if !flags.iter().any(|v| *v) {
+        // None of the flags passed, go to default
+        comm_out = true;
+    }
+
+    let tags = entry.get_tags();
+    if tags.is_err() {
+        trace_error(&tags.err().unwrap());
+        exit(1);
+    }
+    let tags = tags.unwrap();
+
+    if json_out {
+        unimplemented!()
+    }
+
+    if line_out {
+        for tag in &tags {
+            println!("{}", tag);
+        }
+    }
+
+    if sepp_out {
+        let sepp = scmd.value_of("sep").unwrap(); // we checked before
+        println!("{}", tags.join(sepp));
+    }
+
+    if comm_out {
+        println!("{}", tags.join(", "));
+    }
+}
+