diff --git a/app/api/cron/health/route.ts b/app/api/cron/health/route.ts
new file mode 100644
index 0000000..56a2c1d
--- /dev/null
+++ b/app/api/cron/health/route.ts
@@ -0,0 +1,38 @@
+import { NextResponse } from "next/server";
+
+import { env } from "@/lib/env";
+import { runHealthCheckTick } from "@/lib/plesk/health";
+import { createSupabaseAdminClient } from "@/lib/supabase/admin";
+
+export async function POST(req: Request) {
+  const startedAt = Date.now();
+
+  try {
+    const secret = req.headers.get("x-cron-secret");
+    if (!env.cronSecret || !secret || secret !== env.cronSecret) {
+      return NextResponse.json({ error: "Unauthorized" }, { status: 401 });
+    }
+
+    const supabase = createSupabaseAdminClient() as any;
+    const summary = await runHealthCheckTick(supabase);
+
+    return NextResponse.json({
+      ...summary,
+      duration_ms: Date.now() - startedAt,
+    });
+  } catch (error) {
+    console.error("[health cron] failed", error);
+
+    return NextResponse.json(
+      {
+        error: "Health check job failed",
+        checked: 0,
+        ok: 0,
+        degraded: 0,
+        failed: 0,
+        duration_ms: Date.now() - startedAt,
+      },
+      { status: 500 },
+    );
+  }
+}
diff --git a/app/api/plesk/instances/[id]/health/route.ts b/app/api/plesk/instances/[id]/health/route.ts
new file mode 100644
index 0000000..7c7ac4d
--- /dev/null
+++ b/app/api/plesk/instances/[id]/health/route.ts
@@ -0,0 +1,73 @@
+import { NextResponse } from "next/server";
+
+import { assertAgencyAdmin, getRouteAgencyContextOrThrow } from "@/lib/agency";
+import { assertRateLimit } from "@/lib/api/rate-limit";
+import { assertSameOrigin } from "@/lib/api/security";
+import { runInstanceHealthCheck } from "@/lib/plesk/health";
+import { createSupabaseRouteClient } from "@/lib/supabase/route";
+
+export async function POST(
+  req: Request,
+  { params }: { params: { id: string } },
+) {
+  try {
+    assertSameOrigin(req);
+
+    const context = await getRouteAgencyContextOrThrow();
+    assertAgencyAdmin(context);
+    assertRateLimit(`plesk-health-check:${context.userId}`, 20, 60_000);
+
+    const supabase = createSupabaseRouteClient() as any;
+
+    const { data: instance, error: instanceError } = await supabase
+      .from("plesk_instances")
+      .select(
+        "id, agency_id, base_url, auth_type, encrypted_secret, health_enabled, health_check_frequency_minutes, health_next_check_at, health_lock_until",
+      )
+      .eq("id", params.id)
+      .eq("agency_id", context.agencyId)
+      .single();
+
+    if (instanceError || !instance) {
+      throw new Error("Plesk instance not found");
+    }
+
+    const result = await runInstanceHealthCheck(supabase, instance, {
+      actorUserId: context.userId,
+      force: true,
+      source: "manual",
+    });
+
+    if (!result.checked) {
+      return NextResponse.json(
+        { error: "Health check is already running for this instance" },
+        { status: 409 },
+      );
+    }
+
+    const { data: updated } = await supabase
+      .from("plesk_instances")
+      .select(
+        "id, health_enabled, health_status, health_last_checked_at, health_last_ok_at, health_last_error, health_last_latency_ms, health_check_frequency_minutes, health_next_check_at",
+      )
+      .eq("id", params.id)
+      .eq("agency_id", context.agencyId)
+      .single();
+
+    return NextResponse.json({
+      ok: true,
+      result,
+      instance: updated,
+    });
+  } catch (error) {
+    return NextResponse.json(
+      {
+        error:
+          error instanceof Error
+            ? error.message
+            : "Health check execution failed",
+      },
+      { status: 400 },
+    );
+  }
+}