diff --git a/Cargo.lock b/Cargo.lock
index 88d8d90..3dd57be 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2,6 +2,425 @@
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diff --git a/Cargo.toml b/Cargo.toml
index 8663edd..4898e2b 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -4,3 +4,6 @@ version = "0.1.0"
 edition = "2024"
 
 [dependencies]
+clap = { version = "4", features = ["derive"] }
+tokio = { version = "1", features = ["full"] }
+anyhow = "1"
diff --git a/src/cli.rs b/src/cli.rs
new file mode 100644
index 0000000..6be99a1
--- /dev/null
+++ b/src/cli.rs
@@ -0,0 +1,29 @@
+use clap::{Parser, Subcommand};
+
+#[derive(Parser)]
+#[command(name = "olla", about = "Couteau suisse local : réseau, domotique, déploiement, et plus.")]
+pub struct Cli {
+    #[command(subcommand)]
+    pub command: Commands,
+}
+
+#[derive(Subcommand)]
+pub enum Commands {
+    /// Navigation entre les bureaux bspwm
+    #[command(subcommand)]
+    Desktop(DesktopCommands),
+}
+
+#[derive(Subcommand)]
+pub enum DesktopCommands {
+    /// Aller à gauche (Mail→Web, Code→Term)
+    Left,
+    /// Aller à droite (Web→Mail, Term→Code)
+    Right,
+    /// Aller en haut (Term→Web, Code→Mail)
+    Up,
+    /// Aller en bas (Web→Term, Mail→Code)
+    Down,
+    /// Basculer vers/depuis Others
+    Others,
+}
diff --git a/src/commands/desktop.rs b/src/commands/desktop.rs
new file mode 100644
index 0000000..a05f29a
--- /dev/null
+++ b/src/commands/desktop.rs
@@ -0,0 +1,58 @@
+use std::process::Command;
+
+use anyhow::{Context, Result, bail};
+
+use crate::cli::DesktopCommands;
+
+// Grille 2x2 :
+//   Web  ↔ Mail
+//   Term ↔ Code
+// + Others (toggle avec Web)
+
+pub fn run(cmd: &DesktopCommands) -> Result<()> {
+    let current = bspc(&["query", "-D", "-d", "--names"])?;
+
+    let target = match cmd {
+        DesktopCommands::Left => match current.as_str() {
+            "Mail" => "Web",
+            "Code" => "Term",
+            _ => return Ok(()),
+        },
+        DesktopCommands::Right => match current.as_str() {
+            "Web" => "Mail",
+            "Term" => "Code",
+            _ => return Ok(()),
+        },
+        DesktopCommands::Up => match current.as_str() {
+            "Term" => "Web",
+            "Code" => "Mail",
+            _ => return Ok(()),
+        },
+        DesktopCommands::Down => match current.as_str() {
+            "Web" => "Term",
+            "Mail" => "Code",
+            _ => return Ok(()),
+        },
+        DesktopCommands::Others => match current.as_str() {
+            "Others" => "Web",
+            _ => "Others",
+        },
+    };
+
+    bspc(&["desktop", "-f", target])?;
+
+    Ok(())
+}
+
+fn bspc(args: &[&str]) -> Result<String> {
+    let output = Command::new("bspc")
+        .args(args)
+        .output()
+        .context("impossible de lancer bspc")?;
+
+    if !output.status.success() {
+        bail!("bspc {} a échoué: {}", args.join(" "), String::from_utf8_lossy(&output.stderr));
+    }
+
+    Ok(String::from_utf8_lossy(&output.stdout).trim().to_string())
+}
diff --git a/src/commands/mod.rs b/src/commands/mod.rs
new file mode 100644
index 0000000..6cf24c7
--- /dev/null
+++ b/src/commands/mod.rs
@@ -0,0 +1 @@
+pub mod desktop;
diff --git a/src/main.rs b/src/main.rs
index e7a11a9..e44aebb 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,3 +1,15 @@
-fn main() {
-    println!("Hello, world!");
+mod cli;
+mod commands;
+
+use anyhow::Result;
+use clap::Parser;
+use cli::{Cli, Commands};
+
+#[tokio::main]
+async fn main() -> Result<()> {
+    let cli = Cli::parse();
+
+    match cli.command {
+        Commands::Desktop(cmd) => commands::desktop::run(&cmd),
+    }
 }