diff --git a/Cargo.lock b/Cargo.lock
index 7bfc9f6..9458aa2 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -250,6 +250,8 @@ name = "kosyncrs"
 version = "0.1.0"
 dependencies = [
  "axum",
+ "serde",
+ "serde_json",
  "tokio",
 ]
 
diff --git a/Cargo.toml b/Cargo.toml
index 496a9a7..9ce402b 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -7,4 +7,6 @@ edition = "2021"
 
 [dependencies]
 axum = "0.6.20"
+serde = "1.0.188"
+serde_json = "1.0.107"
 tokio = { version = "1.32.0", features = ["macros", "rt-multi-thread"] }
diff --git a/src/main.rs b/src/main.rs
index d0e65ff..9247678 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,9 +1,17 @@
-use axum::{routing::get, Router};
+use axum::{http::StatusCode, routing::get, routing::post, routing::put, Json, Router};
+
+use serde_json::{json, Value};
 
 #[tokio::main]
 async fn main() {
     // build our application with a single route
-    let app = Router::new().route("/", get(|| async { "Hello, World!" }));
+    let app = Router::new()
+        .route("/", get(root))
+        .route("/users/create", post(create_user))
+        .route("/users/auth", get(auth_user))
+        .route("/syncs/progress", put(update_progress))
+        .route("/syncs/progress/:document", put(get_progress))
+        .route("/healthcheck", get(healthcheck));
 
     // run it with hyper on localhost:3000
     axum::Server::bind(&"0.0.0.0:3000".parse().unwrap())
@@ -11,3 +19,19 @@ async fn main() {
         .await
         .unwrap();
 }
+
+async fn root() -> &'static str {
+    "Hello, world!"
+}
+
+async fn create_user() {}
+
+async fn auth_user() {}
+
+async fn update_progress() {}
+
+async fn get_progress() {}
+
+async fn healthcheck() -> (StatusCode, Json<Value>) {
+    (StatusCode::OK, Json(json!({ "state": "OK" })))
+}