diff --git a/ui/src/api/openapi.json b/ui/src/api/openapi.json
index 6cd08d82..422a2de5 100644
--- a/ui/src/api/openapi.json
+++ b/ui/src/api/openapi.json
@@ -91,6 +91,30 @@
               "type": "string"
             }
           },
+          {
+            "name": "routeId",
+            "in": "query",
+            "required": false,
+            "schema": {
+              "type": "string"
+            }
+          },
+          {
+            "name": "agentId",
+            "in": "query",
+            "required": false,
+            "schema": {
+              "type": "string"
+            }
+          },
+          {
+            "name": "processorType",
+            "in": "query",
+            "required": false,
+            "schema": {
+              "type": "string"
+            }
+          },
           {
             "name": "offset",
             "in": "query",
@@ -633,6 +657,27 @@
         }
       }
     },
+    "/api/v1/search/stats": {
+      "get": {
+        "tags": [
+          "Search"
+        ],
+        "summary": "Aggregate execution stats (P99 latency, active count)",
+        "operationId": "stats",
+        "responses": {
+          "200": {
+            "description": "OK",
+            "content": {
+              "*/*": {
+                "schema": {
+                  "$ref": "#/components/schemas/ExecutionStats"
+                }
+              }
+            }
+          }
+        }
+      }
+    },
     "/api/v1/executions/{executionId}": {
       "get": {
         "tags": [
@@ -882,6 +927,15 @@
           "textInErrors": {
             "type": "string"
           },
+          "routeId": {
+            "type": "string"
+          },
+          "agentId": {
+            "type": "string"
+          },
+          "processorType": {
+            "type": "string"
+          },
           "offset": {
             "type": "integer",
             "format": "int32"
@@ -972,6 +1026,19 @@
           }
         }
       },
+      "ExecutionStats": {
+        "type": "object",
+        "properties": {
+          "p99LatencyMs": {
+            "type": "integer",
+            "format": "int64"
+          },
+          "activeCount": {
+            "type": "integer",
+            "format": "int64"
+          }
+        }
+      },
       "ExecutionDetail": {
         "type": "object",
         "properties": {
diff --git a/ui/src/api/schema.d.ts b/ui/src/api/schema.d.ts
index 6397ef04..ceb406c9 100644
--- a/ui/src/api/schema.d.ts
+++ b/ui/src/api/schema.d.ts
@@ -198,9 +198,14 @@ export interface ExecutionStats {
 }
 
 export interface AgentInstance {
-  agentId: string;
+  id: string;
+  name: string;
   group: string;
+  version: string;
+  routeIds: string[];
+  capabilities: Record<string, boolean>;
   state: 'LIVE' | 'STALE' | 'DEAD';
-  lastHeartbeat: string;
   registeredAt: string;
+  lastHeartbeat: string;
+  staleTransitionTime: string | null;
 }
diff --git a/ui/src/components/command-palette/CommandPalette.tsx b/ui/src/components/command-palette/CommandPalette.tsx
index 25f58588..5f4b6281 100644
--- a/ui/src/components/command-palette/CommandPalette.tsx
+++ b/ui/src/components/command-palette/CommandPalette.tsx
@@ -30,7 +30,7 @@ export function CommandPalette() {
       } else if (result.type === 'agent') {
         const agent = result.data as AgentInstance;
         execSearch.setStatus(['COMPLETED', 'FAILED', 'RUNNING']);
-        execSearch.setAgentId(agent.agentId);
+        execSearch.setAgentId(agent.id);
         execSearch.setText('');
         execSearch.setRouteId('');
         execSearch.setProcessorType('');
diff --git a/ui/src/components/command-palette/ResultItem.tsx b/ui/src/components/command-palette/ResultItem.tsx
index f985ea07..94244321 100644
--- a/ui/src/components/command-palette/ResultItem.tsx
+++ b/ui/src/components/command-palette/ResultItem.tsx
@@ -91,7 +91,7 @@ function AgentResult({ data, query }: { data: AgentInstance; query: string }) {
       </div>
       <div className={styles.resultBody}>
         <div className={styles.resultTitle}>
-          <HighlightedText text={data.agentId} query={query} />
+          <HighlightedText text={data.id} query={query} />
           <span className={stateBadgeClass(data.state)}>{data.state}</span>
         </div>
         <div className={styles.resultMeta}>
diff --git a/ui/src/components/command-palette/use-palette-search.ts b/ui/src/components/command-palette/use-palette-search.ts
index 286f228c..772c003b 100644
--- a/ui/src/components/command-palette/use-palette-search.ts
+++ b/ui/src/components/command-palette/use-palette-search.ts
@@ -70,12 +70,12 @@ export function usePaletteSearch() {
   const filteredAgents = (agentsQuery.data ?? []).filter((a) => {
     if (!debouncedQuery) return true;
     const q = debouncedQuery.toLowerCase();
-    return a.agentId.toLowerCase().includes(q) || a.group.toLowerCase().includes(q);
+    return a.id.toLowerCase().includes(q) || a.group.toLowerCase().includes(q);
   });
 
   const agentResults: PaletteResult[] = filteredAgents.slice(0, 10).map((a) => ({
     type: 'agent' as const,
-    id: a.agentId,
+    id: a.id,
     data: a,
   }));