diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8b65f36efcc..501905b424e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -63,6 +63,7 @@ Docs: https://docs.openclaw.ai
 
 ### Fixes
 
+- fix: harden backend message action gateway routing [AI]. (#76374) Thanks @pgondhi987.
 - Gate QQBot streaming command auth [AI]. (#76375) Thanks @pgondhi987.
 - Plugins/release: make the published npm runtime verifier reject blank `openclaw.runtimeExtensions` entries instead of treating them as absent and passing via inferred outputs. Thanks @vincentkoc.
 - Web fetch: scope provider fallback cache entries by the selected fetch provider so config reloads cannot reuse another provider's cached fallback payload. Thanks @vincentkoc.
diff --git a/src/infra/outbound/message-action-runner.plugin-dispatch.test.ts b/src/infra/outbound/message-action-runner.plugin-dispatch.test.ts
index edf83823d21..3740a6e2355 100644
--- a/src/infra/outbound/message-action-runner.plugin-dispatch.test.ts
+++ b/src/infra/outbound/message-action-runner.plugin-dispatch.test.ts
@@ -10,6 +10,7 @@ import type {
 import type { OpenClawConfig } from "../../config/config.js";
 import { getActivePluginRegistry, setActivePluginRegistry } from "../../plugins/runtime.js";
 import { createTestRegistry } from "../../test-utils/channel-plugins.js";
+import { GATEWAY_CLIENT_MODES, GATEWAY_CLIENT_NAMES } from "../../utils/message-channel.js";
 import { runMessageAction } from "./message-action-runner.js";
 import { extractToolPayload } from "./tool-payload.js";
 
@@ -439,6 +440,66 @@ describe("runMessageAction plugin dispatch", () => {
       });
     });
 
+    it("ignores gateway url overrides for backend plugin actions", async () => {
+      const gatewayPlugin = createGatewayActionPlugin({
+        pluginId: "gatewaychat",
+        label: "Gateway Chat",
+        blurb: "Gateway Chat backend action test plugin.",
+        actions: ["react"],
+        capabilities: { chatTypes: ["direct"], reactions: true },
+        handleAction: vi.fn(async () => jsonResult({ ok: true, local: true })),
+      });
+      setActivePluginRegistry(
+        createTestRegistry([
+          {
+            pluginId: "gatewaychat",
+            source: "test",
+            plugin: gatewayPlugin,
+          },
+        ]),
+      );
+      mocks.callGatewayLeastPrivilege.mockResolvedValue({
+        ok: true,
+        added: "ok",
+      });
+
+      await runMessageAction({
+        cfg: {
+          channels: {
+            gatewaychat: {
+              enabled: true,
+            },
+          },
+        } as OpenClawConfig,
+        action: "react",
+        params: {
+          channel: "gatewaychat",
+          to: "+15551234567",
+          chatJid: "+15551234567",
+          messageId: "wamid.1",
+          emoji: "ok",
+        },
+        gateway: {
+          url: "ws://127.0.0.1:18789",
+          token: "configured-token",
+          timeoutMs: 5000,
+          clientName: GATEWAY_CLIENT_NAMES.GATEWAY_CLIENT,
+          mode: GATEWAY_CLIENT_MODES.BACKEND,
+        },
+        dryRun: false,
+      });
+
+      expect(mocks.callGatewayLeastPrivilege).toHaveBeenCalledWith(
+        expect.objectContaining({
+          url: undefined,
+          token: "configured-token",
+          timeoutMs: 5000,
+          clientName: GATEWAY_CLIENT_NAMES.GATEWAY_CLIENT,
+          mode: GATEWAY_CLIENT_MODES.BACKEND,
+        }),
+      );
+    });
+
     it("routes gateway-executed plugin sends through gateway RPC instead of local dispatch", async () => {
       const handleAction = vi.fn(async () => jsonResult({ ok: true, local: true }));
       const gatewayPlugin = createGatewayActionPlugin({
diff --git a/src/infra/outbound/message-action-runner.ts b/src/infra/outbound/message-action-runner.ts
index 144d5d09dff..69f3c66498c 100644
--- a/src/infra/outbound/message-action-runner.ts
+++ b/src/infra/outbound/message-action-runner.ts
@@ -172,8 +172,13 @@ export function getToolResult(
 }
 
 function resolveGatewayActionOptions(gateway?: MessageActionRunnerGateway) {
+  const url =
+    gateway?.mode === GATEWAY_CLIENT_MODES.BACKEND ||
+    gateway?.clientName === GATEWAY_CLIENT_NAMES.GATEWAY_CLIENT
+      ? undefined
+      : gateway?.url;
   return {
-    url: gateway?.url,
+    url,
     token: gateway?.token,
     timeoutMs:
       typeof gateway?.timeoutMs === "number" && Number.isFinite(gateway.timeoutMs)