diff --git a/src/agents/tools/browser-tool.schema.ts b/src/agents/tools/browser-tool.schema.ts
index aef51f6359d..ba22c4b570e 100644
--- a/src/agents/tools/browser-tool.schema.ts
+++ b/src/agents/tools/browser-tool.schema.ts
@@ -89,7 +89,13 @@ export const BrowserToolSchema = Type.Object({
   action: stringEnum(BROWSER_TOOL_ACTIONS),
   target: optionalStringEnum(BROWSER_TARGETS),
   node: Type.Optional(Type.String()),
-  profile: Type.Optional(Type.String()),
+  profile: Type.Optional(
+    Type.String({
+      description:
+        "Browser profile name. Omit to use the default profile (recommended). " +
+        "Use action=profiles to list available profiles.",
+    }),
+  ),
   targetUrl: Type.Optional(Type.String()),
   url: Type.Optional(Type.String()),
   targetId: Type.Optional(Type.String()),
diff --git a/src/browser/chrome.ts b/src/browser/chrome.ts
index 1cb94cf39fb..41a7c53efce 100644
--- a/src/browser/chrome.ts
+++ b/src/browser/chrome.ts
@@ -2,6 +2,7 @@ import { type ChildProcessWithoutNullStreams, spawn } from "node:child_process";
 import fs from "node:fs";
 import os from "node:os";
 import path from "node:path";
+import { isLoopbackHost } from "../gateway/net.js";
 import type { SsrFPolicy } from "../infra/net/ssrf.js";
 import { ensurePortAvailable } from "../infra/ports.js";
 import { rawDataToString } from "../infra/ws.js";
@@ -73,7 +74,9 @@ export type RunningChrome = {
   proc: ChildProcessWithoutNullStreams;
 };
 
-function resolveBrowserExecutable(resolved: ResolvedBrowserConfig): BrowserExecutable | null {
+export function resolveBrowserExecutable(
+  resolved: ResolvedBrowserConfig,
+): BrowserExecutable | null {
   return resolveBrowserExecutableForPlatform(resolved, process.platform);
 }
 
@@ -264,8 +267,26 @@ export async function launchOpenClawChrome(
 
   const exe = resolveBrowserExecutable(resolved);
   if (!exe) {
+    const remoteProfiles = Object.entries(resolved.profiles)
+      .filter(([, p]) => {
+        const url = p.cdpUrl?.trim();
+        if (!url) {
+          return false;
+        }
+        try {
+          return !isLoopbackHost(new URL(url).hostname);
+        } catch {
+          return false;
+        }
+      })
+      .map(([name]) => name);
+    const hint =
+      remoteProfiles.length > 0
+        ? ` A remote browser profile is available: "${remoteProfiles[0]}". ` +
+          `Use profile="${remoteProfiles[0]}" or set browser.defaultProfile to "${remoteProfiles[0]}".`
+        : "";
     throw new Error(
-      "No supported browser found (Chrome/Brave/Edge/Chromium on macOS, Linux, or Windows).",
+      `No supported browser found (Chrome/Brave/Edge/Chromium on macOS, Linux, or Windows).${hint}`,
     );
   }
 
diff --git a/src/browser/server-context.availability.ts b/src/browser/server-context.availability.ts
index 6630c17a4c0..5097af05dbf 100644
--- a/src/browser/server-context.availability.ts
+++ b/src/browser/server-context.availability.ts
@@ -13,8 +13,10 @@ import {
   isChromeCdpReady,
   isChromeReachable,
   launchOpenClawChrome,
+  resolveBrowserExecutable,
   stopOpenClawChrome,
 } from "./chrome.js";
+import { resolveProfile } from "./config.js";
 import type { ResolvedBrowserProfile } from "./config.js";
 import { BrowserProfileUnavailableError } from "./errors.js";
 import { getBrowserProfileCapabilities } from "./profile-capabilities.js";
@@ -182,6 +184,21 @@ export function createProfileAvailability({
             : `Browser attachOnly is enabled and profile "${profile.name}" is not running.`,
         );
       }
+      // Before attempting local Chrome launch, check if a browser executable exists.
+      // If not and there's a different remote default profile, suggest using it instead
+      // of failing with "No supported browser found".
+      if (!resolveBrowserExecutable(current.resolved)) {
+        const defaultProfileName = current.resolved.defaultProfile;
+        if (defaultProfileName && defaultProfileName !== profile.name) {
+          const defaultResolved = resolveProfile(current.resolved, defaultProfileName);
+          if (defaultResolved && !defaultResolved.cdpIsLoopback) {
+            throw new Error(
+              `Profile "${profile.name}" requires a local browser but none is installed. ` +
+                `Use the default profile "${defaultProfileName}" instead (remote CDP at ${defaultResolved.cdpUrl}).`,
+            );
+          }
+        }
+      }
       const launched = await launchOpenClawChrome(current.resolved, profile);
       attachRunning(launched);
       try {
diff --git a/src/browser/server-context.chrome-test-harness.ts b/src/browser/server-context.chrome-test-harness.ts
index 95ebe8097e6..85b3db943e7 100644
--- a/src/browser/server-context.chrome-test-harness.ts
+++ b/src/browser/server-context.chrome-test-harness.ts
@@ -10,6 +10,7 @@ vi.mock("./chrome.js", () => ({
   launchOpenClawChrome: vi.fn(async () => {
     throw new Error("unexpected launch");
   }),
+  resolveBrowserExecutable: vi.fn(() => null),
   resolveOpenClawUserDataDir: vi.fn(() => chromeUserDataDir.dir),
   stopOpenClawChrome: vi.fn(async () => {}),
 }));
diff --git a/src/browser/server-context.loopback-fallback-to-remote.test.ts b/src/browser/server-context.loopback-fallback-to-remote.test.ts
new file mode 100644
index 00000000000..846669dedba
--- /dev/null
+++ b/src/browser/server-context.loopback-fallback-to-remote.test.ts
@@ -0,0 +1,91 @@
+import { afterEach, describe, expect, it, vi } from "vitest";
+import type { BrowserServerState } from "./server-context.js";
+import "./server-context.chrome-test-harness.js";
+import { createBrowserRouteContext } from "./server-context.js";
+
+afterEach(() => {
+  vi.restoreAllMocks();
+});
+
+/**
+ * Build a BrowserServerState with both a loopback "openclaw" profile and a remote profile.
+ * This simulates a containerized gateway that has a remote browser pod but no local Chrome.
+ */
+function makeStateWithRemoteDefault(): BrowserServerState {
+  return {
+    server: null,
+    port: 0,
+    resolved: {
+      enabled: true,
+      controlPort: 18791,
+      cdpProtocol: "http",
+      cdpHost: "127.0.0.1",
+      cdpIsLoopback: true,
+      remoteCdpTimeoutMs: 1500,
+      remoteCdpHandshakeTimeoutMs: 3000,
+      cdpPortRangeStart: 18800,
+      cdpPortRangeEnd: 18899,
+      evaluateEnabled: false,
+      extraArgs: [],
+      color: "#FF4500",
+      headless: false,
+      noSandbox: false,
+      attachOnly: false,
+      ssrfPolicy: { allowPrivateNetwork: true },
+      defaultProfile: "remote",
+      profiles: {
+        remote: {
+          cdpUrl: "http://openclaw-browser.openclaw.svc.cluster.local:9222",
+          cdpPort: 9222,
+          color: "#0066CC",
+        },
+        openclaw: { cdpPort: 18800, color: "#FF4500" },
+      },
+    },
+    profiles: new Map(),
+  };
+}
+
+describe("ensureBrowserAvailable loopback-to-remote fallback", () => {
+  it("suggests the remote default profile when local Chrome is not installed", async () => {
+    const state = makeStateWithRemoteDefault();
+
+    // Mock: loopback CDP port is not reachable (nothing running locally)
+    const { isChromeReachable, resolveBrowserExecutable } = await import("./chrome.js");
+    vi.mocked(isChromeReachable).mockResolvedValue(false);
+    // No Chrome executable installed
+    vi.mocked(resolveBrowserExecutable).mockReturnValue(null);
+
+    const ctx = createBrowserRouteContext({
+      getState: () => state,
+      refreshConfigFromDisk: false,
+    });
+
+    // Request the "openclaw" loopback profile explicitly (this is what the LLM does)
+    const profileCtx = ctx.forProfile("openclaw");
+
+    await expect(profileCtx.ensureBrowserAvailable()).rejects.toThrow(
+      /Use the default profile "remote" instead/,
+    );
+  });
+
+  it("throws original error when no remote default profile exists", async () => {
+    const state = makeStateWithRemoteDefault();
+    // Make the default profile also loopback
+    state.resolved.defaultProfile = "openclaw";
+
+    const { isChromeReachable, resolveBrowserExecutable } = await import("./chrome.js");
+    vi.mocked(isChromeReachable).mockResolvedValue(false);
+    vi.mocked(resolveBrowserExecutable).mockReturnValue(null);
+
+    const ctx = createBrowserRouteContext({
+      getState: () => state,
+      refreshConfigFromDisk: false,
+    });
+
+    const profileCtx = ctx.forProfile("openclaw");
+
+    // Should fall through to launchOpenClawChrome which throws "unexpected launch" (from harness mock)
+    await expect(profileCtx.ensureBrowserAvailable()).rejects.toThrow("unexpected launch");
+  });
+});
diff --git a/src/browser/server.control-server.test-harness.ts b/src/browser/server.control-server.test-harness.ts
index 57b8d191655..2a9fb3082a4 100644
--- a/src/browser/server.control-server.test-harness.ts
+++ b/src/browser/server.control-server.test-harness.ts
@@ -265,6 +265,7 @@ vi.mock("./chrome.js", () => ({
       proc,
     };
   }),
+  resolveBrowserExecutable: vi.fn(() => ({ kind: "chrome", path: "/fake/chrome" })),
   resolveOpenClawUserDataDir: vi.fn(() => chromeUserDataDir.dir),
   stopOpenClawChrome: vi.fn(async () => {
     state.reachable = false;