diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..ea8c4bf
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
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diff --git a/Cargo.lock b/Cargo.lock
new file mode 100644
index 0000000..d8e63f0
--- /dev/null
+++ b/Cargo.lock
@@ -0,0 +1,299 @@
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+ "memchr",
+]
diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..14bd51f
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,10 @@
+[package]
+name = "umu-wrapper-lib"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+serde = { version = "1.0.217", features = ["derive"] }
+serde_toml = "0.0.1"
+tempfile = "3.14.0"
+toml = "0.8.19"
diff --git a/src/command.rs b/src/command.rs
new file mode 100644
index 0000000..058e775
--- /dev/null
+++ b/src/command.rs
@@ -0,0 +1,14 @@
+use tempfile::NamedTempFile;
+
+pub struct Command {
+    inner: String,
+    file: NamedTempFile
+}
+impl Command {
+    pub fn new(inner: String, file: NamedTempFile) -> Self {
+        Self {
+            inner,
+            file
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/command_builder.rs b/src/command_builder.rs
new file mode 100644
index 0000000..36fb1b3
--- /dev/null
+++ b/src/command_builder.rs
@@ -0,0 +1,76 @@
+use std::{io::Write, path::PathBuf};
+
+use serde::Serialize;
+
+use crate::command::Command;
+
+#[derive(Debug, Default, Clone, Serialize)]
+pub struct CommandBuilder {
+    #[serde(skip)]
+    executable: PathBuf,
+    umu: UMU
+}
+#[serde(rename_all = "snake_case")]
+#[derive(Debug, Default, Clone, Serialize)]
+struct UMU {
+    game_id: Option<String>,
+    wineprefix: Option<PathBuf>,
+    proton_executable: Option<PathBuf>,
+    winetricks_verbs: Option<Vec<String>>,
+    store: Option<String>,
+
+}
+
+impl CommandBuilder {
+    pub fn new<T: Into<PathBuf>>(executable: T) -> Self {
+        Self {
+            executable: executable.into(),
+            ..Default::default()
+        }
+    }
+    pub fn build(self) -> Command {
+        let mut file = tempfile::NamedTempFile::new().unwrap();
+        let serialized = toml::to_string(&self).unwrap();
+        println!("Serialized: \n{}", serialized);
+        file.write_all(serialized.as_bytes()).unwrap();
+
+        let mut command = Vec::new();
+        command.push(self.executable.as_os_str().to_str().unwrap());
+        command.push("--config");
+        command.push(file.path().to_str().unwrap());
+
+        Command::new(command.join(" "), file)
+    }
+    pub fn game_id(mut self, game_id: String) -> Self {
+        self.umu.game_id = Some(game_id);
+        self
+    }
+    pub fn proton<T: Into<PathBuf>>(mut self, proton_executable: T) -> Self {
+        self.umu.proton_executable = Some(proton_executable.into());
+        self
+    }
+    pub fn verbs(mut self, winetricks_verbs: Vec<String>) -> Self {
+        self.umu.winetricks_verbs = Some(winetricks_verbs);
+        self
+    }
+    pub fn store(mut self, store: String) -> Self {
+        self.umu.store = Some(store);
+        self
+    }
+    pub fn wineprefix(mut self, wineprefix: PathBuf) -> Self {
+        self.umu.wineprefix = Some(wineprefix);
+        self
+    }
+}
+fn add_arg(a: &str, b: &str) -> String {
+    let mut s = String::new();
+    s.push_str(a);
+    s.push_str(b);
+    s
+}
+fn add_arg_pathbuf(a: &str, b: PathBuf) -> String {
+    let mut s = String::new();
+    s.push_str(a);
+    s.push_str(&b.into_os_string().into_string().unwrap());
+    s
+}
\ No newline at end of file
diff --git a/src/lib.rs b/src/lib.rs
new file mode 100644
index 0000000..2bf08b7
--- /dev/null
+++ b/src/lib.rs
@@ -0,0 +1,3 @@
+mod tests;
+mod command;
+mod command_builder;
\ No newline at end of file
diff --git a/src/tests.rs b/src/tests.rs
new file mode 100644
index 0000000..0d29617
--- /dev/null
+++ b/src/tests.rs
@@ -0,0 +1,9 @@
+use crate::command_builder::CommandBuilder;
+
+#[test]
+pub fn print_sample() {
+    CommandBuilder::new("/usr/bin/umu-run")
+        .game_id("0".to_owned())
+        .wineprefix("~/.wine".into())
+        .build();
+}
\ No newline at end of file