diff --git a/src/app/api/tickets/mentions/route.ts b/src/app/api/tickets/mentions/route.ts
index ff271d7..c044fd5 100644
--- a/src/app/api/tickets/mentions/route.ts
+++ b/src/app/api/tickets/mentions/route.ts
@@ -1,13 +1,14 @@
 import { NextResponse } from "next/server"
-
+import { ConvexHttpClient } from "convex/browser"
+import { api } from "@/convex/_generated/api"
+import type { Id } from "@/convex/_generated/dataModel"
+import { env } from "@/lib/env"
 import { assertAuthenticatedSession } from "@/lib/auth-server"
 import { DEFAULT_TENANT_ID } from "@/lib/constants"
-import { prisma } from "@/lib/prisma"
 
 export const runtime = "nodejs"
 
 const MAX_RESULTS = 10
-const MAX_SCAN = 60
 
 function normalizeRole(role?: string | null) {
   return (role ?? "").toLowerCase()
@@ -19,10 +20,14 @@ export async function GET(request: Request) {
     return NextResponse.json({ items: [] }, { status: 401 })
   }
 
+  const convexUrl = env.NEXT_PUBLIC_CONVEX_URL
+  if (!convexUrl) {
+    return NextResponse.json({ items: [] }, { status: 500 })
+  }
+
   const normalizedRole = normalizeRole(session.user.role)
   const isAgentOrAdmin = normalizedRole === "admin" || normalizedRole === "agent"
   const canLinkOwnTickets = normalizedRole === "collaborator"
-
   if (!isAgentOrAdmin && !canLinkOwnTickets) {
     return NextResponse.json({ items: [] }, { status: 403 })
   }
@@ -32,75 +37,65 @@ export async function GET(request: Request) {
   const rawQuery = url.searchParams.get("q") ?? ""
   const query = rawQuery.trim()
 
-  const whereBase: {
-    tenantId: string
-    requesterId?: string
-  } = { tenantId }
+  const client = new ConvexHttpClient(convexUrl)
 
-  if (!isAgentOrAdmin) {
-    whereBase.requesterId = session.user.id
+  // Garantir que o usuário exista no Convex para obter viewerId
+  let viewerId: string | null = null
+  try {
+    const ensured = await client.mutation(api.users.ensureUser, {
+      tenantId,
+      name: session.user.name ?? session.user.email,
+      email: session.user.email,
+      avatarUrl: session.user.avatarUrl ?? undefined,
+      role: session.user.role.toUpperCase(),
+    })
+    viewerId = ensured?._id ?? null
+  } catch (error) {
+    console.error("[mentions] ensureUser failed", error)
+    return NextResponse.json({ items: [] }, { status: 500 })
+  }
+  if (!viewerId) {
+    return NextResponse.json({ items: [] }, { status: 403 })
   }
 
-  const numericQuery = /^\d+$/.test(query)
-
-  // Fast path for numeric query: exact reference match at DB level
-  let filtered: any[] = []
-  if (numericQuery) {
-    const ref = Number(query)
-    const exact = await prisma.ticket.findMany({
-      where: { ...whereBase, reference: ref },
-      include: {
-        assignee: { select: { name: true } },
-        requester: { select: { name: true } },
-        company: { select: { name: true } },
-      },
-      take: MAX_RESULTS,
-    })
-    filtered = exact
-  } else {
-    const tickets = await prisma.ticket.findMany({
-      where: whereBase,
-      include: {
-        assignee: { select: { name: true } },
-        requester: { select: { name: true } },
-        company: { select: { name: true } },
-      },
-      orderBy: { updatedAt: "desc" },
-      take: MAX_SCAN,
-    })
-
-    const lowered = query.toLowerCase()
-    filtered = tickets
-      .filter((ticket) => {
-        if (!query) return true
-        const subject = ticket.subject ?? ""
-        if (subject.toLowerCase().includes(lowered)) return true
-        const requesterName = ticket.requester?.name ?? ""
-        if (requesterName.toLowerCase().includes(lowered)) return true
-        const companyName = ticket.company?.name ?? ""
-        if (companyName.toLowerCase().includes(lowered)) return true
-        return false
-      })
-      .slice(0, MAX_RESULTS)
+  // Pesquisar pelos tickets visíveis ao viewer (assunto, resumo ou #referência)
+  let tickets: Array<{
+    id: string
+    reference: number
+    subject: string
+    status: string
+    priority: string
+    requester?: { name?: string | null } | null
+    assignee?: { name?: string | null } | null
+    company?: { name?: string | null } | null
+    updatedAt?: number | null
+  }> = []
+  try {
+    const res = (await client.query(api.tickets.list, {
+      tenantId,
+      viewerId: viewerId as unknown as Id<"users">,
+      search: query,
+      limit: 40,
+    })) as any[]
+    tickets = Array.isArray(res) ? res : []
+  } catch (error) {
+    console.error("[mentions] tickets.list failed", error)
+    return NextResponse.json({ items: [] }, { status: 500 })
   }
 
   const basePath = isAgentOrAdmin ? "/tickets" : "/portal/tickets"
-
-  const items = filtered.map((ticket) => {
-    const subject = ticket.subject ?? ""
-    return {
-      id: ticket.id,
-      reference: ticket.reference,
-      subject,
-      status: ticket.status,
-      priority: ticket.priority,
-      requesterName: ticket.requester?.name ?? null,
-      assigneeName: ticket.assignee?.name ?? null,
-      companyName: ticket.company?.name ?? null,
-      url: `${basePath}/${ticket.id}`,
-      updatedAt: ticket.updatedAt.toISOString(),
-    }
-  })
+  const items = tickets.slice(0, MAX_RESULTS).map((t) => ({
+    id: String(t.id),
+    reference: Number(t.reference),
+    subject: String(t.subject ?? ""),
+    status: String(t.status ?? "PENDING"),
+    priority: String(t.priority ?? "MEDIUM"),
+    requesterName: t.requester?.name ?? null,
+    assigneeName: t.assignee?.name ?? null,
+    companyName: t.company?.name ?? null,
+    url: `${basePath}/${String(t.id)}`,
+    updatedAt: t.updatedAt ? new Date(t.updatedAt).toISOString() : new Date().toISOString(),
+  }))
 
   return NextResponse.json({ items })
 }