diff --git a/src/server/actors/repo/branch.rs b/src/server/actors/repo/branch.rs
index b64778a..177833d 100644
--- a/src/server/actors/repo/branch.rs
+++ b/src/server/actors/repo/branch.rs
@@ -66,3 +66,12 @@ pub async fn validate_positions(
     let dev = commit_histories.dev[0].clone();
     addr.do_send(StartMonitoring { main, next, dev });
 }
+
+pub async fn advance_next(
+    _next: forge::Commit,
+    _repo_details: crate::server::config::RepoDetails,
+    _addr: actix::prelude::Addr<super::RepoActor>,
+    _net: kxio::network::Network,
+) {
+    // TODO: (#14) advance next one commit towards dev
+}
diff --git a/src/server/actors/repo/mod.rs b/src/server/actors/repo/mod.rs
index 775192f..6684a59 100644
--- a/src/server/actors/repo/mod.rs
+++ b/src/server/actors/repo/mod.rs
@@ -1,5 +1,7 @@
 mod branch;
 mod config;
+mod status;
+mod webhook;
 
 use actix::prelude::*;
 use kxio::network::Network;
@@ -10,9 +12,12 @@ use crate::server::{
     forge,
 };
 
+use self::webhook::WebhookId;
+
 pub struct RepoActor {
     details: RepoDetails,
     config: Option<RepoConfig>, // INFO: if [None] then send [StartRepo] to populate it
+    webhook_id: Option<WebhookId>, // INFO: if [None] then no webhook is configured
     net: Network,
 }
 impl RepoActor {
@@ -20,12 +25,27 @@ impl RepoActor {
         Self {
             details,
             config: None,
+            webhook_id: None,
             net,
         }
     }
 }
 impl Actor for RepoActor {
     type Context = Context<Self>;
+    fn stopping(&mut self, ctx: &mut Self::Context) -> Running {
+        match self.webhook_id.take() {
+            Some(webhook_id) => {
+                let repo_details = self.details.clone();
+                let addr = ctx.address();
+                let net = self.net.clone();
+                webhook::unregister(webhook_id, repo_details, addr, net)
+                    .into_actor(self)
+                    .wait(ctx);
+                Running::Continue
+            }
+            None => Running::Stop,
+        }
+    }
 }
 
 #[derive(Message)]
@@ -69,7 +89,36 @@ pub struct StartMonitoring {
 }
 impl Handler<StartMonitoring> for RepoActor {
     type Result = ();
-    fn handle(&mut self, _msg: StartMonitoring, _ctx: &mut Self::Context) -> Self::Result {
-        info!(%self.details, "Monitoring started");
+    fn handle(&mut self, msg: StartMonitoring, ctx: &mut Self::Context) -> Self::Result {
+        info!("Monitoring started");
+        let next_ahead_of_main = msg.main != msg.next;
+        let dev_ahead_of_next = msg.next != msg.dev;
+        let repo_details = self.details.clone();
+        let addr = ctx.address();
+        let net = self.net.clone();
+        if next_ahead_of_main {
+            status::check_next(msg.next, repo_details, addr, net)
+                .into_actor(self)
+                .wait(ctx);
+        } else if dev_ahead_of_next {
+            branch::advance_next(msg.next, repo_details, addr, net)
+                .into_actor(self)
+                .wait(ctx);
+        } else if self.webhook_id.is_none() {
+            webhook::register(repo_details, addr, net)
+                .into_actor(self)
+                .wait(ctx)
+            // TODO: (#18) watch for changes on dev
+        }
+    }
+}
+
+#[derive(Message)]
+#[rtype(result = "()")]
+pub struct WebhookRegistered(pub WebhookId);
+impl Handler<WebhookRegistered> for RepoActor {
+    type Result = ();
+    fn handle(&mut self, msg: WebhookRegistered, _ctx: &mut Self::Context) -> Self::Result {
+        self.webhook_id.replace(msg.0);
     }
 }
diff --git a/src/server/actors/repo/status.rs b/src/server/actors/repo/status.rs
new file mode 100644
index 0000000..23aa1f2
--- /dev/null
+++ b/src/server/actors/repo/status.rs
@@ -0,0 +1,10 @@
+use crate::server::forge;
+
+pub async fn check_next(
+    _next: forge::Commit,
+    _repo_details: crate::server::config::RepoDetails,
+    _addr: actix::prelude::Addr<super::RepoActor>,
+    _net: kxio::network::Network,
+) {
+    // TODO: (#13) check statuses for next head - if ok, advance main to next and reassess
+}
diff --git a/src/server/actors/repo/webhook.rs b/src/server/actors/repo/webhook.rs
new file mode 100644
index 0000000..65fb5cc
--- /dev/null
+++ b/src/server/actors/repo/webhook.rs
@@ -0,0 +1,34 @@
+use std::ops::Deref;
+
+#[derive(Clone, Debug, PartialEq, Eq)]
+pub struct WebhookId(String);
+impl WebhookId {
+    #[allow(dead_code)]
+    pub const fn new(id: String) -> Self {
+        Self(id)
+    }
+}
+impl Deref for WebhookId {
+    type Target = String;
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
+pub async fn unregister(
+    _webhook_id: WebhookId,
+    _repo_details: crate::server::config::RepoDetails,
+    _addr: actix::prelude::Addr<super::RepoActor>,
+    _net: kxio::network::Network,
+) {
+    // TODO: (#17) unregister webhook
+    // on success - stop the actor
+}
+
+pub async fn register(
+    _repo_details: crate::server::config::RepoDetails,
+    _addr: actix::prelude::Addr<super::RepoActor>,
+    _net: kxio::network::Network,
+) {
+    // TODO: (#15) register webhook - on success send webhook id to RepoActor
+}