diff --git a/hive-ag3nt/src/forge_notify.rs b/hive-ag3nt/src/forge_notify.rs
index 2a97547a..d36e1bcd 100644
--- a/hive-ag3nt/src/forge_notify.rs
+++ b/hive-ag3nt/src/forge_notify.rs
@@ -17,6 +17,7 @@
 //! `PATCH /notifications/threads/{id}` so it does not re-fire. If delivery
 //! fails the thread is left unread so it resurfaces next tick.
 
+use std::collections::HashSet;
 use std::path::{Path, PathBuf};
 use std::time::Duration;
 
@@ -80,9 +81,28 @@ pub async fn run(socket: PathBuf, is_manager: bool) {
     // socket becoming available right at boot.
     interval.tick().await;
 
+    // HIVE_FORGE_KEEP_SUBSCRIPTIONS=1 disables auto-unsubscribe for agents
+    // that intentionally consume the full repo notification firehose (e.g. triage).
+    let keep_subscriptions = std::env::var("HIVE_FORGE_KEEP_SUBSCRIPTIONS")
+        .map(|v| v == "1" || v.eq_ignore_ascii_case("true"))
+        .unwrap_or(false);
+
+    // Repos we have already unsubscribed this process lifetime. Persists
+    // across polls so we don't hammer DELETE on every cycle.
+    let mut unsubbed_repos: HashSet<String> = HashSet::new();
+
     loop {
         interval.tick().await;
-        poll_once(&client, &forge_url, &token, &socket, is_manager).await;
+        poll_once(
+            &client,
+            &forge_url,
+            &token,
+            &socket,
+            is_manager,
+            keep_subscriptions,
+            &mut unsubbed_repos,
+        )
+        .await;
     }
 }
 
@@ -222,7 +242,15 @@ async fn format_notification(
     }
 }
 
-async fn poll_once(client: &reqwest::Client, forge_url: &str, token: &str, socket: &Path, is_manager: bool) {
+async fn poll_once(
+    client: &reqwest::Client,
+    forge_url: &str,
+    token: &str,
+    socket: &Path,
+    is_manager: bool,
+    keep_subscriptions: bool,
+    unsubbed_repos: &mut HashSet<String>,
+) {
     let url = format!("{forge_url}/api/v1/notifications?all=false&limit=50");
     let resp = match client
         .get(&url)
@@ -310,5 +338,35 @@ async fn poll_once(client: &reqwest::Client, forge_url: &str, token: &str, socke
                 debug!(%id, "forge_notify: marked read");
             }
         }
+
+        // Auto-unsubscribe from broad repo watches when the notification
+        // reason is "subscribed" (agent watching the whole repo). Skipped
+        // when HIVE_FORGE_KEEP_SUBSCRIPTIONS=1 — triage and other firehose
+        // consumers set this to retain broad repo visibility.
+        let reason = notif["reason"].as_str().unwrap_or("");
+        if !keep_subscriptions && reason == "subscribed" {
+            if let Some(repo) = notif["repository"]["full_name"].as_str() {
+                if !unsubbed_repos.contains(repo) {
+                    let unsub_url = format!("{forge_url}/api/v1/repos/{repo}/subscription");
+                    match client
+                        .delete(&unsub_url)
+                        .header("Authorization", format!("token {token}"))
+                        .send()
+                        .await
+                    {
+                        Ok(r) if r.status().is_success() || r.status().as_u16() == 404 => {
+                            debug!(%repo, "forge_notify: unsubscribed from repo watch");
+                            unsubbed_repos.insert(repo.to_owned());
+                        }
+                        Ok(r) => {
+                            debug!(%repo, status = %r.status(), "forge_notify: unsub non-2xx (ignored)");
+                        }
+                        Err(e) => {
+                            debug!(%repo, error = ?e, "forge_notify: unsub request failed (ignored)");
+                        }
+                    }
+                }
+            }
+        }
     }
 }
diff --git a/nix/templates/harness-base.nix b/nix/templates/harness-base.nix
index e8f43d12..e1bd2879 100644
--- a/nix/templates/harness-base.nix
+++ b/nix/templates/harness-base.nix
@@ -159,6 +159,20 @@
     '';
   };
 
+  options.hyperhive.forge.keepSubscriptions = lib.mkOption {
+    type = lib.types.bool;
+    default = true;
+    description = ''
+      When true (the default), the forge notification poller will NOT
+      auto-unsubscribe from repo watches after delivering a
+      "subscribed"-reason notification. Sub-agents keep their broad
+      subscriptions so they stay informed about repos they contribute to.
+      Set to false for agents (e.g. the manager) that use reason-based
+      filtering and do not need firehose-level repo visibility — they will
+      auto-unsubscribe after receiving a watched-repo notification.
+    '';
+  };
+
   options.hyperhive.claudeMarketplaces = lib.mkOption {
     type = lib.types.listOf lib.types.str;
     default = [ "anthropics/claude-plugins-official" ];
@@ -283,6 +297,8 @@
       # Zero watermark disables proactive compaction; the reactive path
       # (compact-on-overflow) still fires when the session is truly full.
       HIVE_COMPACT_WATERMARK_TOKENS = "0";
+    } // lib.optionalAttrs config.hyperhive.forge.keepSubscriptions {
+      HIVE_FORGE_KEEP_SUBSCRIPTIONS = "1";
     };
 
     boot.isNspawnContainer = true;
diff --git a/nix/templates/manager.nix b/nix/templates/manager.nix
index f88e2fba..c040cae5 100644
--- a/nix/templates/manager.nix
+++ b/nix/templates/manager.nix
@@ -2,6 +2,10 @@
 {
   imports = [ ./harness-base.nix ];
 
+  # Manager auto-unsubscribes from repo watches (uses mention-only filtering
+  # via HIVE_FORGE_NOTIFY_REASONS). Sub-agents default to keepSubscriptions=true.
+  hyperhive.forge.keepSubscriptions = false;
+
   # HIVE_PORT/HIVE_LABEL/gitconfig are also injected by the generated
   # `applied/hm1nd/flake.nix` (see `lifecycle::setup_applied`); the values
   # here are the base config so the container stays sensible if anyone