diff --git a/.build_number b/.build_number
index af13fd5..22f557e 100644
--- a/.build_number
+++ b/.build_number
@@ -1 +1 @@
-271261322
+271261335
diff --git a/backend/app/routers/status.py b/backend/app/routers/status.py
index 692dde1..2c5a941 100644
--- a/backend/app/routers/status.py
+++ b/backend/app/routers/status.py
@@ -1,6 +1,6 @@
 from typing import Any, Dict
 import httpx
-from fastapi import APIRouter, Depends
+from fastapi import APIRouter, Depends, HTTPException
 
 from ..auth import get_current_user
 from ..runtime import get_runtime_settings
@@ -93,3 +93,42 @@ async def services_status() -> Dict[str, Any]:
         overall = "degraded"
 
     return {"overall": overall, "services": services}
+
+
+@router.post("/services/{service}/test")
+async def test_service(service: str) -> Dict[str, Any]:
+    runtime = get_runtime_settings()
+    jellyseerr = JellyseerrClient(runtime.jellyseerr_base_url, runtime.jellyseerr_api_key)
+    sonarr = SonarrClient(runtime.sonarr_base_url, runtime.sonarr_api_key)
+    radarr = RadarrClient(runtime.radarr_base_url, runtime.radarr_api_key)
+    prowlarr = ProwlarrClient(runtime.prowlarr_base_url, runtime.prowlarr_api_key)
+    qbittorrent = QBittorrentClient(
+        runtime.qbittorrent_base_url, runtime.qbittorrent_username, runtime.qbittorrent_password
+    )
+    jellyfin = JellyfinClient(runtime.jellyfin_base_url, runtime.jellyfin_api_key)
+
+    service_key = service.strip().lower()
+    checks = {
+        "jellyseerr": (
+            "Jellyseerr",
+            jellyseerr.configured(),
+            lambda: jellyseerr.get_recent_requests(take=1, skip=0),
+        ),
+        "sonarr": ("Sonarr", sonarr.configured(), sonarr.get_system_status),
+        "radarr": ("Radarr", radarr.configured(), radarr.get_system_status),
+        "prowlarr": ("Prowlarr", prowlarr.configured(), prowlarr.get_health),
+        "qbittorrent": ("qBittorrent", qbittorrent.configured(), qbittorrent.get_app_version),
+        "jellyfin": ("Jellyfin", jellyfin.configured(), jellyfin.get_system_info),
+    }
+
+    if service_key not in checks:
+        raise HTTPException(status_code=404, detail="Unknown service")
+
+    name, configured, func = checks[service_key]
+    result = await _check(name, configured, func)
+    if name == "Prowlarr" and result.get("status") == "up":
+        health = result.get("detail")
+        if isinstance(health, list) and health:
+            result["status"] = "degraded"
+            result["message"] = "Health warnings"
+    return result
diff --git a/frontend/app/globals.css b/frontend/app/globals.css
index 0c62f99..a0f359b 100644
--- a/frontend/app/globals.css
+++ b/frontend/app/globals.css
@@ -1415,6 +1415,24 @@ button span {
   font-size: 13px;
 }
 
+.system-meta {
+  display: flex;
+  flex-direction: column;
+  gap: 2px;
+}
+
+.system-test-message {
+  font-size: 11px;
+  color: var(--ink-muted);
+}
+
+.system-actions {
+  margin-left: auto;
+  display: flex;
+  align-items: center;
+  gap: 8px;
+}
+
 .system-dot {
   width: 10px;
   height: 10px;
@@ -1444,10 +1462,28 @@ button span {
 }
 
 .system-state {
-  margin-left: auto;
   color: var(--ink-muted);
 }
 
+.system-test {
+  padding: 4px 10px;
+  border-radius: 999px;
+  border: 1px solid var(--border);
+  background: rgba(255, 255, 255, 0.08);
+  color: var(--ink-muted);
+  font-size: 11px;
+  letter-spacing: 0.02em;
+}
+
+.system-test:hover:not(:disabled) {
+  background: rgba(255, 255, 255, 0.16);
+}
+
+.system-test:disabled {
+  opacity: 0.6;
+  cursor: not-allowed;
+}
+
 .pipeline-map {
   border-radius: 16px;
   border: 1px solid var(--border);
diff --git a/frontend/app/page.tsx b/frontend/app/page.tsx
index ac85ce3..2e2a589 100644
--- a/frontend/app/page.tsx
+++ b/frontend/app/page.tsx
@@ -30,6 +30,8 @@ export default function HomePage() {
   >(null)
   const [servicesLoading, setServicesLoading] = useState(false)
   const [servicesError, setServicesError] = useState<string | null>(null)
+  const [serviceTesting, setServiceTesting] = useState<Record<string, boolean>>({})
+  const [serviceTestResults, setServiceTestResults] = useState<Record<string, string | null>>({})
 
   const submit = (event: React.FormEvent) => {
     event.preventDefault()
@@ -42,6 +44,61 @@ export default function HomePage() {
     void runSearch(trimmed)
   }
 
+  const toServiceSlug = (name: string) => name.toLowerCase().replace(/[^a-z0-9]/g, '')
+
+  const updateServiceStatus = (name: string, status: string, message?: string) => {
+    setServicesStatus((prev) => {
+      if (!prev) return prev
+      return {
+        ...prev,
+        services: prev.services.map((service) =>
+          service.name === name ? { ...service, status, message } : service
+        ),
+      }
+    })
+  }
+
+  const testService = async (name: string) => {
+    const slug = toServiceSlug(name)
+    setServiceTesting((prev) => ({ ...prev, [name]: true }))
+    setServiceTestResults((prev) => ({ ...prev, [name]: null }))
+    try {
+      const baseUrl = getApiBase()
+      const response = await authFetch(`${baseUrl}/status/services/${slug}/test`, {
+        method: 'POST',
+      })
+      if (!response.ok) {
+        if (response.status === 401) {
+          clearToken()
+          router.push('/login')
+          return
+        }
+        const text = await response.text()
+        throw new Error(text || `Service test failed: ${response.status}`)
+      }
+      const data = await response.json()
+      const status = data?.status ?? 'unknown'
+      const message =
+        data?.message ||
+        (status === 'up'
+          ? 'API OK'
+          : status === 'down'
+            ? 'API unreachable'
+            : status === 'degraded'
+              ? 'Health warnings'
+              : status === 'not_configured'
+                ? 'Not configured'
+                : 'Unknown')
+      setServiceTestResults((prev) => ({ ...prev, [name]: message }))
+      updateServiceStatus(name, status, data?.message)
+    } catch (error) {
+      console.error(error)
+      setServiceTestResults((prev) => ({ ...prev, [name]: 'Test failed' }))
+    } finally {
+      setServiceTesting((prev) => ({ ...prev, [name]: false }))
+    }
+  }
+
   useEffect(() => {
     if (!getToken()) {
       router.push('/login')
@@ -214,21 +271,37 @@ export default function HomePage() {
                   return order.map((name) => {
                     const item = items.find((entry) => entry.name === name)
                     const status = item?.status ?? 'unknown'
+                    const testing = serviceTesting[name] ?? false
                     return (
                       <div key={name} className={`system-item system-${status}`}>
                         <span className="system-dot" />
-                        <span className="system-name">{name}</span>
-                        <span className="system-state">
-                          {status === 'up'
-                            ? 'Up'
-                            : status === 'down'
-                              ? 'Down'
-                              : status === 'degraded'
-                                ? 'Needs attention'
-                                : status === 'not_configured'
-                                  ? 'Not configured'
-                                  : 'Unknown'}
-                        </span>
+                        <div className="system-meta">
+                          <span className="system-name">{name}</span>
+                          {serviceTestResults[name] && (
+                            <span className="system-test-message">{serviceTestResults[name]}</span>
+                          )}
+                        </div>
+                        <div className="system-actions">
+                          <span className="system-state">
+                            {status === 'up'
+                              ? 'Up'
+                              : status === 'down'
+                                ? 'Down'
+                                : status === 'degraded'
+                                  ? 'Needs attention'
+                                  : status === 'not_configured'
+                                    ? 'Not configured'
+                                    : 'Unknown'}
+                          </span>
+                          <button
+                            type="button"
+                            className="system-test"
+                            onClick={() => void testService(name)}
+                            disabled={testing}
+                          >
+                            {testing ? 'Testing...' : 'Test'}
+                          </button>
+                        </div>
                       </div>
                     )
                   })