diff --git a/frontend/components/account/__tests__/paymentSecurity.test.ts b/frontend/components/account/__tests__/paymentSecurity.test.ts
index 1c1c6d24..09406c4b 100644
--- a/frontend/components/account/__tests__/paymentSecurity.test.ts
+++ b/frontend/components/account/__tests__/paymentSecurity.test.ts
@@ -216,9 +216,13 @@ export function runTests() {
   const optionalRefreshIndex = middlewareSource.indexOf(
     "function shouldRefreshOptionalSupabaseSession",
   );
+  const publicApiFunction = middlewareSource.slice(
+    middlewareSource.indexOf("function isPublicApi"),
+    middlewareSource.indexOf("function shouldRefreshOptionalSupabaseSession"),
+  );
   assert(
     optionalRefreshIndex >= 0 &&
-      !middlewareSource.includes('pathname === "/api/system/status"'),
+      !publicApiFunction.includes('pathname === "/api/system/status"'),
     "middleware must not treat system status as public after it becomes an ops-only API",
   );
 
diff --git a/frontend/components/ops/__tests__/opsLocalAccess.test.ts b/frontend/components/ops/__tests__/opsLocalAccess.test.ts
new file mode 100644
index 00000000..4d50f7a0
--- /dev/null
+++ b/frontend/components/ops/__tests__/opsLocalAccess.test.ts
@@ -0,0 +1,62 @@
+import fs from "node:fs";
+import path from "node:path";
+
+function assert(condition: unknown, message: string) {
+  if (!condition) throw new Error(message);
+}
+
+export function runTests() {
+  const projectRoot = process.cwd();
+  const opsAdminSource = fs.readFileSync(
+    path.join(projectRoot, "lib", "ops-admin.ts"),
+    "utf8",
+  );
+  const middlewareSource = fs.readFileSync(
+    path.join(projectRoot, "middleware.ts"),
+    "utf8",
+  );
+  const opsProxyAuthSource = fs.readFileSync(
+    path.join(projectRoot, "lib", "ops-proxy-auth.ts"),
+    "utf8",
+  );
+  const opsLocalAccessSource = fs.readFileSync(
+    path.join(projectRoot, "lib", "ops-local-access.ts"),
+    "utf8",
+  );
+
+  assert(
+    middlewareSource.includes("isLocalOpsAccessHost") &&
+      middlewareSource.includes('pathname.startsWith("/ops")') &&
+      middlewareSource.includes('pathname.startsWith("/api/ops")') &&
+      middlewareSource.includes('pathname === "/api/system/status"') &&
+      middlewareSource.indexOf("isLocalOpsAccessHost") <
+        middlewareSource.indexOf("handleTerminalGate"),
+    "middleware must honor localhost ops access before redirecting /ops to login",
+  );
+
+  assert(
+    opsAdminSource.includes("headers") &&
+      opsAdminSource.includes("isLocalOpsAccessHost") &&
+      opsAdminSource.includes("local-dev@polyweather.local") &&
+      opsAdminSource.indexOf("isLocalOpsAccessHost") <
+        opsAdminSource.indexOf("parseAdminEmails"),
+    "ops server page gate must honor localhost ops access before Supabase/admin-email redirects",
+  );
+
+  assert(
+    opsProxyAuthSource.includes("isLocalOpsAccessHost") &&
+      opsProxyAuthSource.includes("x-forwarded-host") &&
+      opsProxyAuthSource.includes("request.nextUrl.hostname") &&
+      opsProxyAuthSource.indexOf("isLocalOpsAccessHost") <
+        opsProxyAuthSource.indexOf("auth.authUserId"),
+    "ops API proxy auth must allow localhost ops access before requiring a Supabase session",
+  );
+
+  assert(
+    opsLocalAccessSource.includes("POLYWEATHER_LOCAL_OPS_FULL_ACCESS") &&
+      opsLocalAccessSource.includes('process.env.NODE_ENV !== "production"') &&
+      opsLocalAccessSource.includes("isLocalHostname") &&
+      !opsLocalAccessSource.includes("NEXT_PUBLIC_POLYWEATHER_LOCAL_FULL_ACCESS"),
+    "ops local access must be a server-side dev-only switch independent from the public product full-access flag",
+  );
+}
diff --git a/frontend/lib/ops-admin.ts b/frontend/lib/ops-admin.ts
index 7cd9015b..c59fddd2 100644
--- a/frontend/lib/ops-admin.ts
+++ b/frontend/lib/ops-admin.ts
@@ -1,11 +1,14 @@
-import { cookies } from "next/headers";
+import { cookies, headers } from "next/headers";
 import { redirect } from "next/navigation";
+import { isLocalOpsAccessHost } from "@/lib/ops-local-access";
 import {
   createSupabaseServerClient,
   hasSupabaseServerEnv,
   hasSupabaseSessionCookieValues,
 } from "@/lib/supabase/server";
 
+const LOCAL_DEV_OPS_EMAIL = "local-dev@polyweather.local";
+
 function parseAdminEmails() {
   return String(process.env.POLYWEATHER_OPS_ADMIN_EMAILS || "")
     .split(",")
@@ -14,6 +17,13 @@ function parseAdminEmails() {
 }
 
 export async function requireOpsAdmin(nextPath = "/ops") {
+  const headerStore = await headers();
+  const requestHost =
+    headerStore.get("x-forwarded-host") || headerStore.get("host") || "";
+  if (isLocalOpsAccessHost(requestHost)) {
+    return { email: LOCAL_DEV_OPS_EMAIL };
+  }
+
   const allowedEmails = parseAdminEmails();
   if (!allowedEmails.length || !hasSupabaseServerEnv()) {
     redirect("/");
diff --git a/frontend/lib/ops-local-access.ts b/frontend/lib/ops-local-access.ts
new file mode 100644
index 00000000..ce6b7018
--- /dev/null
+++ b/frontend/lib/ops-local-access.ts
@@ -0,0 +1,11 @@
+import { extractHostname, isLocalHostname } from "@/lib/local-dev-access";
+
+function readLocalOpsAccessFlag() {
+  const raw = process.env.POLYWEATHER_LOCAL_OPS_FULL_ACCESS;
+  if (raw == null) return process.env.NODE_ENV !== "production";
+  return !/^(0|false|off|no)$/i.test(String(raw).trim());
+}
+
+export function isLocalOpsAccessHost(value?: string | null) {
+  return readLocalOpsAccessFlag() && isLocalHostname(extractHostname(value));
+}
diff --git a/frontend/lib/ops-proxy-auth.ts b/frontend/lib/ops-proxy-auth.ts
index f976d86c..1159afc0 100644
--- a/frontend/lib/ops-proxy-auth.ts
+++ b/frontend/lib/ops-proxy-auth.ts
@@ -4,6 +4,7 @@ import {
   applyAuthResponseCookies,
   type BackendHeaderBuildResult,
 } from "@/lib/backend-auth";
+import { isLocalOpsAccessHost } from "@/lib/ops-local-access";
 
 function hasBearerAuth(request: NextRequest) {
   const raw = request.headers.get("authorization");
@@ -12,10 +13,22 @@ function hasBearerAuth(request: NextRequest) {
   return parts.length === 2 && parts[0].toLowerCase() === "bearer" && Boolean(parts[1]);
 }
 
+function isLocalOpsAccessRequest(request: NextRequest) {
+  const requestHost =
+    request.headers.get("x-forwarded-host") ||
+    request.headers.get("host") ||
+    request.nextUrl.host;
+  return (
+    isLocalOpsAccessHost(requestHost) ||
+    isLocalOpsAccessHost(request.nextUrl.hostname)
+  );
+}
+
 export function requireOpsProxyAuth(
   request: NextRequest,
   auth: BackendHeaderBuildResult,
 ): NextResponse | null {
+  if (isLocalOpsAccessRequest(request)) return null;
   if (auth.authUserId || hasBearerAuth(request)) return null;
   return applyAuthResponseCookies(
     NextResponse.json(
diff --git a/frontend/middleware.ts b/frontend/middleware.ts
index 54b5cc2f..568c517d 100644
--- a/frontend/middleware.ts
+++ b/frontend/middleware.ts
@@ -5,6 +5,7 @@ import {
   refreshMiddlewareSession,
 } from "@/lib/supabase/server";
 import { isLocalFullAccessHost } from "@/lib/local-dev-access";
+import { isLocalOpsAccessHost } from "@/lib/ops-local-access";
 
 function readEnvBool(name: string, fallback: boolean) {
   const raw = process.env[name];
@@ -51,6 +52,14 @@ function shouldRefreshOptionalSupabaseSession(pathname: string) {
   );
 }
 
+function isOpsSurface(pathname: string) {
+  return (
+    pathname.startsWith("/ops") ||
+    pathname.startsWith("/api/ops") ||
+    pathname === "/api/system/status"
+  );
+}
+
 function hasSupabaseSessionCookie(request: NextRequest) {
   return hasSupabaseSessionCookieValues(
     request.cookies.getAll().map((cookie) => ({
@@ -170,6 +179,14 @@ export async function middleware(request: NextRequest) {
 
   const { pathname } = request.nextUrl;
 
+  if (
+    isOpsSurface(pathname) &&
+    (isLocalOpsAccessHost(requestHost) ||
+      isLocalOpsAccessHost(request.nextUrl.hostname))
+  ) {
+    return NextResponse.next();
+  }
+
   // ── Terminal gate runs first, independently of global auth mode ──────────
   // This is the Koyfin-style Layer 1: send unauthenticated users to /auth/login
   // before they ever reach the terminal, eliminating the jarring "enter product