diff --git a/Cargo.toml b/Cargo.toml
index feaf251..39fb07a 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,8 @@
-[package]
-name = "Cogs"
-version = "0.1.0"
-edition = "2021"
-
-[dependencies]
+[workspace]
+members = [
+  "crates/ast",
+  "crates/codegen",
+  "crates/parser",
+  "integrations/axum"
+]
+resolver = "2"
diff --git a/crates/ast/Cargo.toml b/crates/ast/Cargo.toml
new file mode 100644
index 0000000..ec10812
--- /dev/null
+++ b/crates/ast/Cargo.toml
@@ -0,0 +1,6 @@
+[package]
+name = "cogs_ast"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
diff --git a/crates/ast/src/lib.rs b/crates/ast/src/lib.rs
new file mode 100644
index 0000000..b93cf3f
--- /dev/null
+++ b/crates/ast/src/lib.rs
@@ -0,0 +1,14 @@
+pub fn add(left: u64, right: u64) -> u64 {
+    left + right
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn it_works() {
+        let result = add(2, 2);
+        assert_eq!(result, 4);
+    }
+}
diff --git a/crates/codegen/Cargo.toml b/crates/codegen/Cargo.toml
new file mode 100644
index 0000000..e4f8fab
--- /dev/null
+++ b/crates/codegen/Cargo.toml
@@ -0,0 +1,6 @@
+[package]
+name = "cogs_codegen"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
diff --git a/crates/codegen/src/lib.rs b/crates/codegen/src/lib.rs
new file mode 100644
index 0000000..b93cf3f
--- /dev/null
+++ b/crates/codegen/src/lib.rs
@@ -0,0 +1,14 @@
+pub fn add(left: u64, right: u64) -> u64 {
+    left + right
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn it_works() {
+        let result = add(2, 2);
+        assert_eq!(result, 4);
+    }
+}
diff --git a/crates/parser/Cargo.toml b/crates/parser/Cargo.toml
new file mode 100644
index 0000000..1f550d8
--- /dev/null
+++ b/crates/parser/Cargo.toml
@@ -0,0 +1,6 @@
+[package]
+name = "cogs_parser"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
diff --git a/crates/parser/src/lib.rs b/crates/parser/src/lib.rs
new file mode 100644
index 0000000..b93cf3f
--- /dev/null
+++ b/crates/parser/src/lib.rs
@@ -0,0 +1,14 @@
+pub fn add(left: u64, right: u64) -> u64 {
+    left + right
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn it_works() {
+        let result = add(2, 2);
+        assert_eq!(result, 4);
+    }
+}
diff --git a/integrations/axum/Cargo.toml b/integrations/axum/Cargo.toml
new file mode 100644
index 0000000..7842e54
--- /dev/null
+++ b/integrations/axum/Cargo.toml
@@ -0,0 +1,6 @@
+[package]
+name = "cogs_axum"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
diff --git a/integrations/axum/src/lib.rs b/integrations/axum/src/lib.rs
new file mode 100644
index 0000000..b93cf3f
--- /dev/null
+++ b/integrations/axum/src/lib.rs
@@ -0,0 +1,14 @@
+pub fn add(left: u64, right: u64) -> u64 {
+    left + right
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn it_works() {
+        let result = add(2, 2);
+        assert_eq!(result, 4);
+    }
+}