diff --git a/docs/ARCHITECTURE.md b/docs/ARCHITECTURE.md
index 1a31ddaf..548c3190 100644
--- a/docs/ARCHITECTURE.md
+++ b/docs/ARCHITECTURE.md
@@ -362,6 +362,7 @@ erDiagram
       string name
       string key
       string machineId
+      boolean isActive
     }
 
     USAGE_ENTRY {
diff --git a/src/app/(dashboard)/dashboard/endpoint/EndpointPageClient.js b/src/app/(dashboard)/dashboard/endpoint/EndpointPageClient.js
index 5ab015b2..9f725c43 100644
--- a/src/app/(dashboard)/dashboard/endpoint/EndpointPageClient.js
+++ b/src/app/(dashboard)/dashboard/endpoint/EndpointPageClient.js
@@ -272,6 +272,21 @@ export default function APIPageClient({ machineId }) {
     }
   };
 
+  const handleToggleKey = async (id, isActive) => {
+    try {
+      const res = await fetch(`/api/keys/${id}`, {
+        method: "PUT",
+        headers: { "Content-Type": "application/json" },
+        body: JSON.stringify({ isActive }),
+      });
+      if (res.ok) {
+        setKeys(prev => prev.map(k => k.id === id ? { ...k, isActive } : k));
+      }
+    } catch (error) {
+      console.log("Error toggling key:", error);
+    }
+  };
+
   const [baseUrl, setBaseUrl] = useState("/v1");
   const cloudEndpointNew = cloudUrl ? `${cloudUrl}/v1` : "";
 
@@ -405,7 +420,7 @@ export default function APIPageClient({ machineId }) {
             {keys.map((key) => (
               <div
                 key={key.id}
-                className="group flex items-center justify-between py-3 border-b border-black/[0.03] dark:border-white/[0.03] last:border-b-0"
+                className={`group flex items-center justify-between py-3 border-b border-black/[0.03] dark:border-white/[0.03] last:border-b-0 ${key.isActive === false ? "opacity-60" : ""}`}
               >
                 <div className="flex-1 min-w-0">
                   <p className="text-sm font-medium">{key.name}</p>
@@ -423,13 +438,32 @@ export default function APIPageClient({ machineId }) {
                   <p className="text-xs text-text-muted mt-1">
                     Created {new Date(key.createdAt).toLocaleDateString()}
                   </p>
+                  {key.isActive === false && (
+                    <p className="text-xs text-orange-500 mt-1">Paused</p>
+                  )}
+                </div>
+                <div className="flex items-center gap-2">
+                  <Toggle
+                    size="sm"
+                    checked={key.isActive ?? true}
+                    onChange={(checked) => {
+                      if (key.isActive && !checked) {
+                        if (confirm(`Pause API key "${key.name}"?\n\nThis key will stop working immediately but can be resumed later.`)) {
+                          handleToggleKey(key.id, checked);
+                        }
+                      } else {
+                        handleToggleKey(key.id, checked);
+                      }
+                    }}
+                    title={key.isActive ? "Pause key" : "Resume key"}
+                  />
+                  <button
+                    onClick={() => handleDeleteKey(key.id)}
+                    className="p-2 hover:bg-red-500/10 rounded text-red-500 opacity-0 group-hover:opacity-100 transition-all"
+                  >
+                    <span className="material-symbols-outlined text-[18px]">delete</span>
+                  </button>
                 </div>
-                <button
-                  onClick={() => handleDeleteKey(key.id)}
-                  className="p-2 hover:bg-red-500/10 rounded text-red-500 opacity-0 group-hover:opacity-100 transition-all"
-                >
-                  <span className="material-symbols-outlined text-[18px]">delete</span>
-                </button>
               </div>
             ))}
           </div>
diff --git a/src/app/api/keys/[id]/route.js b/src/app/api/keys/[id]/route.js
index 825e2e78..1cfc0ff5 100644
--- a/src/app/api/keys/[id]/route.js
+++ b/src/app/api/keys/[id]/route.js
@@ -1,8 +1,48 @@
 import { NextResponse } from "next/server";
-import { deleteApiKey, isCloudEnabled } from "@/lib/localDb";
+import { deleteApiKey, getApiKeyById, updateApiKey, isCloudEnabled } from "@/lib/localDb";
 import { getConsistentMachineId } from "@/shared/utils/machineId";
 import { syncToCloud } from "@/app/api/sync/cloud/route";
 
+// GET /api/keys/[id] - Get single key
+export async function GET(request, { params }) {
+  try {
+    const { id } = await params;
+    const key = await getApiKeyById(id);
+    if (!key) {
+      return NextResponse.json({ error: "Key not found" }, { status: 404 });
+    }
+    return NextResponse.json({ key });
+  } catch (error) {
+    console.log("Error fetching key:", error);
+    return NextResponse.json({ error: "Failed to fetch key" }, { status: 500 });
+  }
+}
+
+// PUT /api/keys/[id] - Update key
+export async function PUT(request, { params }) {
+  try {
+    const { id } = await params;
+    const body = await request.json();
+    const { isActive } = body;
+
+    const existing = await getApiKeyById(id);
+    if (!existing) {
+      return NextResponse.json({ error: "Key not found" }, { status: 404 });
+    }
+
+    const updateData = {};
+    if (isActive !== undefined) updateData.isActive = isActive;
+
+    const updated = await updateApiKey(id, updateData);
+    await syncKeysToCloudIfEnabled();
+
+    return NextResponse.json({ key: updated });
+  } catch (error) {
+    console.log("Error updating key:", error);
+    return NextResponse.json({ error: "Failed to update key" }, { status: 500 });
+  }
+}
+
 // DELETE /api/keys/[id] - Delete API key
 export async function DELETE(request, { params }) {
   try {
diff --git a/src/lib/localDb.js b/src/lib/localDb.js
index e7f675f7..34227a8c 100644
--- a/src/lib/localDb.js
+++ b/src/lib/localDb.js
@@ -115,6 +115,16 @@ function ensureDbShape(data) {
         }
       }
     }
+
+    // Migrate existing API keys to have isActive
+    if (key === "apiKeys" && Array.isArray(next.apiKeys)) {
+      for (const apiKey of next.apiKeys) {
+        if (apiKey.isActive === undefined || apiKey.isActive === null) {
+          apiKey.isActive = true;
+          changed = true;
+        }
+      }
+    }
   }
 
   return { data: next, changed };
@@ -649,6 +659,7 @@ export async function createApiKey(name, machineId) {
     name: name,
     key: result.key,
     machineId: machineId,
+    isActive: true,
     createdAt: now,
   };
   
@@ -673,12 +684,36 @@ export async function deleteApiKey(id) {
   return true;
 }
 
+/**
+ * Get API key by ID
+ */
+export async function getApiKeyById(id) {
+  const db = await getDb();
+  return db.data.apiKeys.find(k => k.id === id) || null;
+}
+
+/**
+ * Update API key
+ */
+export async function updateApiKey(id, data) {
+  const db = await getDb();
+  const index = db.data.apiKeys.findIndex(k => k.id === id);
+  if (index === -1) return null;
+  db.data.apiKeys[index] = {
+    ...db.data.apiKeys[index],
+    ...data,
+  };
+  await db.write();
+  return db.data.apiKeys[index];
+}
+
 /**
  * Validate API key
  */
 export async function validateApiKey(key) {
   const db = await getDb();
-  return db.data.apiKeys.some(k => k.key === key);
+  const found = db.data.apiKeys.find(k => k.key === key);
+  return found && found.isActive !== false;
 }
 
 // ============ Data Cleanup ============