diff --git a/validation/src/main.rs b/validation/src/main.rs
index fcd33d8..8bf2d57 100644
--- a/validation/src/main.rs
+++ b/validation/src/main.rs
@@ -1,5 +1,23 @@
+mod publisher;
 mod validator;
 
-#[tokio::main]
-async fn main(){
+#[allow(dead_code)]
+#[derive(Debug)]
+enum StartupError{
+	Connect(async_nats::ConnectError),
+	Subscribe(async_nats::SubscribeError),
+}
+
+#[tokio::main]
+async fn main()->Result<(),StartupError>{
+	let nasty=async_nats::connect("nats").await.map_err(StartupError::Connect)?;
+	let (publisher,validator)=tokio::try_join!(
+		publisher::Publisher::new(nasty.clone()),
+		validator::Validator::new(nasty)
+	).map_err(StartupError::Subscribe)?;
+	// publisher thread
+	tokio::spawn(publisher.run());
+	// run validator on the main thread indefinitely
+	validator.run().await;
+	Ok(())
 }
diff --git a/validation/src/publisher.rs b/validation/src/publisher.rs
new file mode 100644
index 0000000..4cc1135
--- /dev/null
+++ b/validation/src/publisher.rs
@@ -0,0 +1,25 @@
+use futures::StreamExt;
+
+enum PublishError{
+}
+
+pub struct Publisher{
+	nats:async_nats::Client,
+	subscriber:async_nats::Subscriber,
+}
+impl Publisher{
+	pub async fn new(nats:async_nats::Client)->Result<Self,async_nats::SubscribeError>{
+		Ok(Self{
+			subscriber:nats.subscribe("publish").await?,
+			nats,
+		})
+	}
+	pub async fn run(mut self){
+		while let Some(message)=self.subscriber.next().await{
+			self.publish(message).await
+		}
+	}
+	async fn publish(&self,message:async_nats::Message){
+		println!("publish {:?}",message);
+	}
+}
diff --git a/validation/src/validator.rs b/validation/src/validator.rs
index e69de29..339d386 100644
--- a/validation/src/validator.rs
+++ b/validation/src/validator.rs
@@ -0,0 +1,37 @@
+use futures::StreamExt;
+use rbx_dom_weak::WeakDom;
+
+enum Valid{
+	Untouched(WeakDom),
+	Modified(WeakDom),
+}
+
+enum ValidateError{
+}
+
+
+pub struct Validator{
+	nats:async_nats::Client,
+	subscriber:async_nats::Subscriber,
+}
+impl Validator{
+	pub async fn new(nats:async_nats::Client)->Result<Self,async_nats::SubscribeError>{
+		Ok(Self{
+			subscriber:nats.subscribe("validate").await?,
+			nats,
+		})
+	}
+	pub async fn run(mut self){
+		while let Some(message)=self.subscriber.next().await{
+			self.validate(message).await
+		}
+	}
+	async fn validate(&self,message:async_nats::Message){
+		println!("validate {:?}",message);
+		// download map
+		// validate map
+		// validate(dom)
+		// reply with validity
+		// Ok(Valid::Untouched(dom))
+	}
+}