diff --git a/CLAUDE.md b/CLAUDE.md
index 050b0f9..a6d883e 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -74,7 +74,7 @@ encounter wiki-links (`[[like-this]]`) it is referring to docs/ cards.
 
 ### Kubernetes (ArgoCD)
 
-Most services run in minikube on indri via ArgoCD (app-of-apps, manual sync). GPU workloads (Frigate, Mosquitto, ntfy) run on ringtail's k3s cluster, also managed by ArgoCD.
+Most services run in minikube on indri via ArgoCD (app-of-apps, manual sync). GPU workloads (Frigate, ntfy) run on ringtail's k3s cluster, also managed by ArgoCD.
 
 **PR workflow:**
 1. Create branch, modify `argocd/manifests/<service>/`
diff --git a/argocd/apps/mqtt.yaml b/argocd/apps/mqtt.yaml
deleted file mode 100644
index 61959aa..0000000
--- a/argocd/apps/mqtt.yaml
+++ /dev/null
@@ -1,18 +0,0 @@
----
-apiVersion: argoproj.io/v1alpha1
-kind: Application
-metadata:
-  name: mqtt
-  namespace: argocd
-spec:
-  project: default
-  source:
-    repoURL: ssh://forgejo@forge.ops.eblu.me:2222/eblume/blumeops.git
-    targetRevision: main
-    path: argocd/manifests/mosquitto
-  destination:
-    server: https://ringtail.tail8d86e.ts.net:6443
-    namespace: mqtt
-  syncPolicy:
-    syncOptions:
-      - CreateNamespace=true
diff --git a/argocd/manifests/frigate/frigate-config.yml b/argocd/manifests/frigate/frigate-config.yml
index baad1e7..4a6def5 100644
--- a/argocd/manifests/frigate/frigate-config.yml
+++ b/argocd/manifests/frigate/frigate-config.yml
@@ -1,10 +1,6 @@
 database:
   path: /db/frigate.db
 
-mqtt:
-  host: mosquitto.mqtt.svc.cluster.local
-  port: 1883
-
 go2rtc:
   streams:
     # GableCam IP is reserved in UX7 DHCP config
diff --git a/argocd/manifests/frigate/frigate-notify-config.yml b/argocd/manifests/frigate/frigate-notify-config.yml
index 69072df..886e3fd 100644
--- a/argocd/manifests/frigate/frigate-notify-config.yml
+++ b/argocd/manifests/frigate/frigate-notify-config.yml
@@ -6,8 +6,6 @@ frigate:
     enabled: true
     interval: 15
 
-  mqtt:
-    enabled: false
 
 alerts:
   general:
diff --git a/argocd/manifests/mosquitto/deployment.yaml b/argocd/manifests/mosquitto/deployment.yaml
deleted file mode 100644
index 3c8b8fa..0000000
--- a/argocd/manifests/mosquitto/deployment.yaml
+++ /dev/null
@@ -1,47 +0,0 @@
----
-apiVersion: apps/v1
-kind: Deployment
-metadata:
-  name: mosquitto
-  namespace: mqtt
-spec:
-  replicas: 1
-  selector:
-    matchLabels:
-      app: mosquitto
-  template:
-    metadata:
-      labels:
-        app: mosquitto
-    spec:
-      containers:
-        - name: mosquitto
-          image: eclipse-mosquitto:kustomized
-          ports:
-            - containerPort: 1883
-              name: mqtt
-          volumeMounts:
-            - name: config
-              mountPath: /mosquitto/config/mosquitto.conf
-              subPath: mosquitto.conf
-          resources:
-            requests:
-              memory: "32Mi"
-              cpu: "50m"
-            limits:
-              memory: "128Mi"
-              cpu: "100m"
-          livenessProbe:
-            tcpSocket:
-              port: 1883
-            initialDelaySeconds: 5
-            periodSeconds: 30
-          readinessProbe:
-            tcpSocket:
-              port: 1883
-            initialDelaySeconds: 3
-            periodSeconds: 10
-      volumes:
-        - name: config
-          configMap:
-            name: mosquitto-config
diff --git a/argocd/manifests/mosquitto/kustomization.yaml b/argocd/manifests/mosquitto/kustomization.yaml
deleted file mode 100644
index e468120..0000000
--- a/argocd/manifests/mosquitto/kustomization.yaml
+++ /dev/null
@@ -1,14 +0,0 @@
----
-apiVersion: kustomize.config.k8s.io/v1beta1
-kind: Kustomization
-namespace: mqtt
-resources:
-  - deployment.yaml
-  - service.yaml
-images:
-  - name: eclipse-mosquitto
-    newTag: "2.0.22"
-configMapGenerator:
-  - name: mosquitto-config
-    files:
-      - mosquitto.conf
diff --git a/argocd/manifests/mosquitto/mosquitto.conf b/argocd/manifests/mosquitto/mosquitto.conf
deleted file mode 100644
index 0e3b61e..0000000
--- a/argocd/manifests/mosquitto/mosquitto.conf
+++ /dev/null
@@ -1,3 +0,0 @@
-listener 1883
-allow_anonymous true
-persistence false
diff --git a/argocd/manifests/mosquitto/service.yaml b/argocd/manifests/mosquitto/service.yaml
deleted file mode 100644
index 7a66aa0..0000000
--- a/argocd/manifests/mosquitto/service.yaml
+++ /dev/null
@@ -1,13 +0,0 @@
----
-apiVersion: v1
-kind: Service
-metadata:
-  name: mosquitto
-  namespace: mqtt
-spec:
-  selector:
-    app: mosquitto
-  ports:
-    - name: mqtt
-      port: 1883
-      targetPort: 1883
diff --git a/docs/changelog.d/+remove-mosquitto.infra.md b/docs/changelog.d/+remove-mosquitto.infra.md
new file mode 100644
index 0000000..9b452cf
--- /dev/null
+++ b/docs/changelog.d/+remove-mosquitto.infra.md
@@ -0,0 +1 @@
+Remove Mosquitto (MQTT broker) — unused since frigate-notify switched to webapi polling. Deleted ArgoCD app, k8s manifests, namespace, and updated all docs.
diff --git a/docs/explanation/architecture.md b/docs/explanation/architecture.md
index f4872cc..4080b1e 100644
--- a/docs/explanation/architecture.md
+++ b/docs/explanation/architecture.md
@@ -39,7 +39,7 @@ Three always-on devices form the infrastructure backbone:
 ```
 
 - **[[indri]]** runs most services (native and containerized)
-- **[[ringtail]]** runs GPU workloads (Frigate NVR) and related services (MQTT, ntfy)
+- **[[ringtail]]** runs GPU workloads (Frigate NVR) and related services (ntfy)
 - **[[sifaka]]** provides bulk storage and backup targets
 - **[[gilbert]]** is the development workstation
 
@@ -73,7 +73,7 @@ Services run across three compute targets:
 
 **Minikube on indri (ArgoCD)** — most services run in minikube, managed via ArgoCD from `argocd/manifests/`. See [[apps]] for the application registry.
 
-**K3s on ringtail (ArgoCD)** — GPU workloads and related services run on [[ringtail]]'s single-node k3s cluster. Frigate NVR uses the RTX 4080 for object detection; Mosquitto and ntfy support its alerting pipeline.
+**K3s on ringtail (ArgoCD)** — GPU workloads and related services run on [[ringtail]]'s single-node k3s cluster. Frigate NVR uses the RTX 4080 for object detection; ntfy supports its alerting pipeline.
 
 ## Data Flow
 
diff --git a/docs/reference/infrastructure/indri.md b/docs/reference/infrastructure/indri.md
index 54465de..cbb2a0f 100644
--- a/docs/reference/infrastructure/indri.md
+++ b/docs/reference/infrastructure/indri.md
@@ -32,7 +32,7 @@ Primary BlumeOps server. Mac Mini M1 (2020).
 - [[caddy]] - Reverse proxy for `*.ops.eblu.me`
 
 **Kubernetes (via minikube):**
-- [[apps|Most k8s applications]] (Frigate, Mosquitto, ntfy migrated to [[ringtail]] k3s)
+- [[apps|Most k8s applications]] (Frigate, ntfy migrated to [[ringtail]] k3s)
 
 **GUI Applications (manual start required):**
 - Docker Desktop - Container runtime for minikube
diff --git a/docs/reference/infrastructure/ringtail.md b/docs/reference/infrastructure/ringtail.md
index d8e2a05..74d5a7d 100644
--- a/docs/reference/infrastructure/ringtail.md
+++ b/docs/reference/infrastructure/ringtail.md
@@ -66,8 +66,7 @@ Sync order: `1password-connect-ringtail` -> `external-secrets-crds-ringtail` ->
 | Workload | Namespace | Notes |
 |----------|-----------|-------|
 | [[frigate]] | `frigate` | NVR with GPU-accelerated detection (RTX 4080) |
-| [[frigate]]-notify | `frigate` | MQTT-to-ntfy alert bridge |
-| Mosquitto | `mqtt` | MQTT broker for Frigate events |
+| [[frigate]]-notify | `frigate` | Webapi-to-ntfy alert bridge |
 | [[authentik]] | `authentik` | OIDC identity provider |
 | [[ntfy]] | `ntfy` | Push notification server |
 | [[ollama]] | `ollama` | LLM inference with GPU (RTX 4080) |
diff --git a/docs/reference/kubernetes/cluster.md b/docs/reference/kubernetes/cluster.md
index e7e49bf..9b632bd 100644
--- a/docs/reference/kubernetes/cluster.md
+++ b/docs/reference/kubernetes/cluster.md
@@ -7,7 +7,7 @@ tags:
 
 # Kubernetes Cluster
 
-BlumeOps runs two Kubernetes clusters: a Minikube cluster on [[indri]] (most services) and a k3s cluster on [[ringtail]] (GPU workloads, MQTT, notifications). Both are managed by [[argocd]] on indri.
+BlumeOps runs two Kubernetes clusters: a Minikube cluster on [[indri]] (most services) and a k3s cluster on [[ringtail]] (GPU workloads, notifications). Both are managed by [[argocd]] on indri.
 
 ## Cluster Specifications
 
@@ -41,7 +41,7 @@ Single-node k3s cluster for workloads requiring amd64 or GPU access. See [[ringt
 |----------|-------|
 | **Context** | `k3s-ringtail` |
 | **API Server** | `https://ringtail.tail8d86e.ts.net:6443` |
-| **Workloads** | Frigate (GPU), Mosquitto, ntfy, frigate-notify, nvidia-device-plugin |
+| **Workloads** | Frigate (GPU), ntfy, frigate-notify, nvidia-device-plugin |
 
 ## Related
 
diff --git a/docs/reference/services/frigate.md b/docs/reference/services/frigate.md
index 6486fe5..46363bd 100644
--- a/docs/reference/services/frigate.md
+++ b/docs/reference/services/frigate.md
@@ -34,7 +34,7 @@ Frigate pod (ringtail k3s)
     ├── /media/frigate  — NFS recordings (sifaka)
     └── /db             — SQLite (local PVC)
         │
-        └──→ MQTT (Mosquitto) → frigate-notify → ntfy → mobile
+        └──→ frigate-notify (webapi poll) → ntfy → mobile
 ```
 
 ## Cameras
@@ -70,7 +70,7 @@ Two zones are configured: `driveway_entrance` (triggers review alerts for person
 
 ## Alerting (frigate-notify)
 
-A separate **frigate-notify** pod (`ghcr.io/0x2142/frigate-notify:v0.3.5`) subscribes to Frigate's MQTT events via Mosquitto and pushes alerts to [[ntfy]] on the `frigate-alerts` topic. Alert messages include action buttons linking back to the Frigate review UI.
+A separate **frigate-notify** pod polls Frigate's webapi every 15 seconds for detection events and pushes alerts to [[ntfy]] on the `frigate-alerts` topic. Alert messages include action buttons linking back to the Frigate review UI.
 
 ## Related
 
diff --git a/docs/reference/services/ntfy.md b/docs/reference/services/ntfy.md
index 0504559..b549a6d 100644
--- a/docs/reference/services/ntfy.md
+++ b/docs/reference/services/ntfy.md
@@ -29,10 +29,10 @@ The upstream relay (`ntfy.sh`) is configured so mobile app clients can receive p
 
 ## Producers
 
-Currently the only producer is **frigate-notify**, which publishes camera detection alerts (person, vehicle, animal) from [[frigate|Frigate]] via MQTT to ntfy:
+Currently the only producer is **frigate-notify**, which polls Frigate's webapi for camera detection alerts (person, vehicle, animal) and forwards them to ntfy:
 
 ```
-Frigate → MQTT (Mosquitto) → frigate-notify → ntfy → mobile clients
+Frigate → frigate-notify (webapi polling) → ntfy → mobile clients
 ```
 
 The frigate-notify config points to ntfy's cluster-internal address:
diff --git a/docs/reference/services/tempo.md b/docs/reference/services/tempo.md
index 567168a..771b97f 100644
--- a/docs/reference/services/tempo.md
+++ b/docs/reference/services/tempo.md
@@ -41,7 +41,7 @@ Distributed tracing backend for BlumeOps infrastructure. Receives traces via OTL
 | [[ollama]] | HTTP REST | Same (model inference latency) |
 | [[immich]] | HTTP REST | Same |
 
-Beyla auto-instruments HTTP services via eBPF kernel hooks — no code changes needed. MQTT (Mosquitto) is not instrumented (no eBPF parser for MQTT).
+Beyla auto-instruments HTTP services via eBPF kernel hooks — no code changes needed.
 
 **Future: SDK instrumentation**
 Services with OTel SDK support (e.g., Hermes) can send traces directly to the OTLP endpoint for deeper internal spans (DB queries, business logic) alongside eBPF envelope traces.
diff --git a/mise-tasks/services-check b/mise-tasks/services-check
index 1f3b664..d0de329 100755
--- a/mise-tasks/services-check
+++ b/mise-tasks/services-check
@@ -95,7 +95,6 @@ check_service "forgejo-runner" "ssh ringtail 'systemctl is-active gitea-runner-n
 
 echo ""
 echo "Ringtail k3s pods:"
-check_service "mosquitto" "kubectl --context=k3s-ringtail -n mqtt get pods -l app=mosquitto -o jsonpath='{.items[0].status.phase}' | grep -q Running"
 check_service "ntfy" "kubectl --context=k3s-ringtail -n ntfy get pods -l app=ntfy -o jsonpath='{.items[0].status.phase}' | grep -q Running"
 check_service "authentik" "kubectl --context=k3s-ringtail -n authentik get pods -l component=server -o jsonpath='{.items[0].status.phase}' | grep -q Running"
 check_service "frigate" "kubectl --context=k3s-ringtail -n frigate get pods -l app=frigate -o jsonpath='{.items[0].status.phase}' | grep -q Running"
diff --git a/service-versions.yaml b/service-versions.yaml
index 535af7c..83daab1 100644
--- a/service-versions.yaml
+++ b/service-versions.yaml
@@ -30,11 +30,6 @@ services:
     current-version: "v2.18.0"
     upstream-source: https://github.com/kubernetes/kube-state-metrics/releases
 
-  - name: mosquitto
-    type: argocd
-    last-reviewed: 2026-02-16
-    current-version: "2.0.22"
-    upstream-source: https://github.com/eclipse/mosquitto/releases
 
   - name: ntfy
     type: argocd