diff --git a/services/brain.hcl b/services/brain.hcl
new file mode 100644
index 0000000..e98c9df
--- /dev/null
+++ b/services/brain.hcl
@@ -0,0 +1,48 @@
+# ABOUTME: Brain - Petre's externalized executive function system
+# ABOUTME: SilverBullet for markdown web UI + ttyd for web terminal
+
+job "brain" {
+  datacenters = ["alo"]
+
+  group "web" {
+    volume "services" {
+      type      = "host"
+      read_only = false
+      source    = "services"
+    }
+
+    network {
+      port "silverbullet" {}
+    }
+
+    task "silverbullet" {
+      driver = "docker"
+      user   = "1000"
+
+      config {
+        image = "zefhemel/silverbullet:latest"
+        ports = ["silverbullet"]
+        volumes = ["/data/services/brain:/space"]
+      }
+
+      resources {
+        memory = 512
+      }
+
+      service {
+        name = "brain"
+        port = "silverbullet"
+
+        tags = [
+          "traefik.enable=true",
+          "traefik.http.routers.brain.entryPoints=websecure",
+          "traefik.http.routers.brain.middlewares=oidc-auth@file",
+        ]
+      }
+    }
+
+    # TODO: terminal task with ttyd for web-based amp/claude access
+    # Needs custom image with tmux + amp + claude-code installed
+    # For now, use SSH or local terminal for amp sessions
+  }
+}