diff --git a/CHANGELOG.md b/CHANGELOG.md
index b7238136a5a..d5701b6cfa7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -18,6 +18,7 @@ Docs: https://docs.openclaw.ai
 - Sessions/Agents: harden transcript path resolution for mismatched agent context by preserving explicit store roots and adding safe absolute-path fallback to the correct agent sessions directory. (#16288) Thanks @robbyczgw-cla.
 - BlueBubbles: include sender identity in group chat envelopes and pass clean message text to the agent prompt, aligning with iMessage/Signal formatting. (#16210) Thanks @zerone0x.
 - WhatsApp: honor per-account `dmPolicy` overrides (account-level settings now take precedence over channel defaults for inbound DMs). (#10082) Thanks @mcaxtr.
+- Media: accept `MEDIA:`-prefixed paths (lenient whitespace) when loading outbound media to prevent `ENOENT` for tool-returned local media paths. (#13107) Thanks @mcaxtr.
 - Security/Node Host: enforce `system.run` rawCommand/argv consistency to prevent allowlist/approval bypass. Thanks @christos-eth.
 - Security/Exec approvals: prevent safeBins allowlist bypass via shell expansion (host exec allowlist mode only; not enabled by default). Thanks @christos-eth.
 - Security/Gateway: block `system.execApprovals.*` via `node.invoke` (use `exec.approvals.node.*` instead). Thanks @christos-eth.
diff --git a/src/auto-reply/reply.triggers.trigger-handling.test-harness.ts b/src/auto-reply/reply.triggers.trigger-handling.test-harness.ts
index 4f9457679db..b4422f7a4e3 100644
--- a/src/auto-reply/reply.triggers.trigger-handling.test-harness.ts
+++ b/src/auto-reply/reply.triggers.trigger-handling.test-harness.ts
@@ -1,7 +1,13 @@
 import { join } from "node:path";
-import { afterEach, type MockInstance, vi } from "vitest";
+import { afterEach, vi } from "vitest";
 import { withTempHome as withTempHomeBase } from "../../test/helpers/temp-home.js";
 
+// Avoid exporting vitest mock types (TS2742 under pnpm + d.ts emit).
+// oxlint-disable-next-line typescript/no-explicit-any
+type AnyMock = any;
+// oxlint-disable-next-line typescript/no-explicit-any
+type AnyMocks = Record<string, any>;
+
 const piEmbeddedMocks = vi.hoisted(() => ({
   abortEmbeddedPiRun: vi.fn().mockReturnValue(false),
   compactEmbeddedPiSession: vi.fn(),
@@ -11,19 +17,19 @@ const piEmbeddedMocks = vi.hoisted(() => ({
   isEmbeddedPiRunStreaming: vi.fn().mockReturnValue(false),
 }));
 
-export function getAbortEmbeddedPiRunMock(): MockInstance {
+export function getAbortEmbeddedPiRunMock(): AnyMock {
   return piEmbeddedMocks.abortEmbeddedPiRun;
 }
 
-export function getCompactEmbeddedPiSessionMock(): MockInstance {
+export function getCompactEmbeddedPiSessionMock(): AnyMock {
   return piEmbeddedMocks.compactEmbeddedPiSession;
 }
 
-export function getRunEmbeddedPiAgentMock(): MockInstance {
+export function getRunEmbeddedPiAgentMock(): AnyMock {
   return piEmbeddedMocks.runEmbeddedPiAgent;
 }
 
-export function getQueueEmbeddedPiMessageMock(): MockInstance {
+export function getQueueEmbeddedPiMessageMock(): AnyMock {
   return piEmbeddedMocks.queueEmbeddedPiMessage;
 }
 
@@ -49,7 +55,7 @@ const providerUsageMocks = vi.hoisted(() => ({
   resolveUsageProviderId: vi.fn((provider: string) => provider.split("/")[0]),
 }));
 
-export function getProviderUsageMocks(): Record<string, MockInstance> {
+export function getProviderUsageMocks(): AnyMocks {
   return providerUsageMocks;
 }
 
@@ -77,7 +83,7 @@ const modelCatalogMocks = vi.hoisted(() => ({
   resetModelCatalogCacheForTest: vi.fn(),
 }));
 
-export function getModelCatalogMocks(): Record<string, MockInstance> {
+export function getModelCatalogMocks(): AnyMocks {
   return modelCatalogMocks;
 }
 
@@ -89,7 +95,7 @@ const webSessionMocks = vi.hoisted(() => ({
   readWebSelfId: vi.fn().mockReturnValue({ e164: "+1999" }),
 }));
 
-export function getWebSessionMocks(): Record<string, MockInstance> {
+export function getWebSessionMocks(): AnyMocks {
   return webSessionMocks;
 }
 
diff --git a/src/auto-reply/reply/agent-runner.heartbeat-typing.test-harness.ts b/src/auto-reply/reply/agent-runner.heartbeat-typing.test-harness.ts
index 01db5693c11..c5e54ac8ecc 100644
--- a/src/auto-reply/reply/agent-runner.heartbeat-typing.test-harness.ts
+++ b/src/auto-reply/reply/agent-runner.heartbeat-typing.test-harness.ts
@@ -1,4 +1,4 @@
-import { beforeEach, type MockInstance, vi } from "vitest";
+import { beforeEach, vi } from "vitest";
 import type { SessionEntry } from "../../config/sessions.js";
 import type { TypingMode } from "../../config/types.js";
 import type { TemplateContext } from "../templating.js";
@@ -6,11 +6,15 @@ import type { GetReplyOptions } from "../types.js";
 import type { FollowupRun, QueueSettings } from "./queue.js";
 import { createMockTypingController } from "./test-helpers.js";
 
+// Avoid exporting vitest mock types (TS2742 under pnpm + d.ts emit).
+// oxlint-disable-next-line typescript/no-explicit-any
+type AnyMock = any;
+
 const state = vi.hoisted(() => ({
   runEmbeddedPiAgentMock: vi.fn(),
 }));
 
-export function getRunEmbeddedPiAgentMock(): MockInstance {
+export function getRunEmbeddedPiAgentMock(): AnyMock {
   return state.runEmbeddedPiAgentMock;
 }
 
diff --git a/src/auto-reply/reply/agent-runner.memory-flush.test-harness.ts b/src/auto-reply/reply/agent-runner.memory-flush.test-harness.ts
index af5ecd487f9..6168b2ed36d 100644
--- a/src/auto-reply/reply/agent-runner.memory-flush.test-harness.ts
+++ b/src/auto-reply/reply/agent-runner.memory-flush.test-harness.ts
@@ -1,10 +1,14 @@
 import fs from "node:fs/promises";
 import path from "node:path";
-import { type MockInstance, vi } from "vitest";
+import { vi } from "vitest";
 import type { TemplateContext } from "../templating.js";
 import type { FollowupRun, QueueSettings } from "./queue.js";
 import { createMockTypingController } from "./test-helpers.js";
 
+// Avoid exporting vitest mock types (TS2742 under pnpm + d.ts emit).
+// oxlint-disable-next-line typescript/no-explicit-any
+type AnyMock = any;
+
 type EmbeddedRunParams = {
   prompt?: string;
   extraSystemPrompt?: string;
@@ -16,11 +20,11 @@ const state = vi.hoisted(() => ({
   runCliAgentMock: vi.fn(),
 }));
 
-export function getRunEmbeddedPiAgentMock(): MockInstance {
+export function getRunEmbeddedPiAgentMock(): AnyMock {
   return state.runEmbeddedPiAgentMock;
 }
 
-export function getRunCliAgentMock(): MockInstance {
+export function getRunCliAgentMock(): AnyMock {
   return state.runCliAgentMock;
 }
 
diff --git a/src/imessage/monitor.test-harness.ts b/src/imessage/monitor.test-harness.ts
index ba5e07ca41f..8ae52ea205d 100644
--- a/src/imessage/monitor.test-harness.ts
+++ b/src/imessage/monitor.test-harness.ts
@@ -1,7 +1,11 @@
-import { beforeEach, type MockInstance, vi } from "vitest";
+import { beforeEach, vi } from "vitest";
 
 type NotificationHandler = (msg: { method: string; params?: unknown }) => void;
 
+// Avoid exporting vitest mock types (TS2742 under pnpm + d.ts emit).
+// oxlint-disable-next-line typescript/no-explicit-any
+type AnyMock = any;
+
 const state = vi.hoisted(() => ({
   requestMock: vi.fn(),
   stopMock: vi.fn(),
@@ -15,39 +19,39 @@ const state = vi.hoisted(() => ({
   closeResolve: undefined as (() => void) | undefined,
 }));
 
-export function getRequestMock(): MockInstance {
+export function getRequestMock(): AnyMock {
   return state.requestMock;
 }
 
-export function getStopMock(): MockInstance {
+export function getStopMock(): AnyMock {
   return state.stopMock;
 }
 
-export function getSendMock(): MockInstance {
+export function getSendMock(): AnyMock {
   return state.sendMock;
 }
 
-export function getReplyMock(): MockInstance {
+export function getReplyMock(): AnyMock {
   return state.replyMock;
 }
 
-export function getUpdateLastRouteMock(): MockInstance {
+export function getUpdateLastRouteMock(): AnyMock {
   return state.updateLastRouteMock;
 }
 
-export function getReadAllowFromStoreMock(): MockInstance {
+export function getReadAllowFromStoreMock(): AnyMock {
   return state.readAllowFromStoreMock;
 }
 
-export function getUpsertPairingRequestMock(): MockInstance {
+export function getUpsertPairingRequestMock(): AnyMock {
   return state.upsertPairingRequestMock;
 }
 
-export function getNotificationHandler() {
+export function getNotificationHandler(): NotificationHandler | undefined {
   return state.notificationHandler;
 }
 
-export function getCloseResolve() {
+export function getCloseResolve(): (() => void) | undefined {
   return state.closeResolve;
 }
 
diff --git a/src/web/auto-reply.test-harness.ts b/src/web/auto-reply.test-harness.ts
index 36c785adba9..6ead596455f 100644
--- a/src/web/auto-reply.test-harness.ts
+++ b/src/web/auto-reply.test-harness.ts
@@ -14,6 +14,10 @@ import {
 
 export { resetBaileysMocks, resetLoadConfigMock, setLoadConfigMock } from "./test-helpers.js";
 
+// Avoid exporting inferred vitest mock types (TS2742 under pnpm + d.ts emit).
+// oxlint-disable-next-line typescript/no-explicit-any
+type AnyExport = any;
+
 export const TEST_NET_IP = "203.0.113.10";
 
 vi.mock("../agents/pi-embedded.js", () => ({
@@ -119,7 +123,7 @@ export function installWebAutoReplyUnitTestHooks(opts?: { pinDns?: boolean }) {
   });
 }
 
-export function createWebListenerFactoryCapture() {
+export function createWebListenerFactoryCapture(): AnyExport {
   let capturedOnMessage: ((msg: WebInboundMessage) => Promise<void>) | undefined;
   const listenerFactory = async (opts: {
     onMessage: (msg: WebInboundMessage) => Promise<void>;
@@ -134,7 +138,7 @@ export function createWebListenerFactoryCapture() {
   };
 }
 
-export function createWebInboundDeliverySpies() {
+export function createWebInboundDeliverySpies(): AnyExport {
   return {
     sendMedia: vi.fn(),
     reply: vi.fn().mockResolvedValue(undefined),
diff --git a/src/web/media.test.ts b/src/web/media.test.ts
index 594b6d8e75f..dc8eff56131 100644
--- a/src/web/media.test.ts
+++ b/src/web/media.test.ts
@@ -108,6 +108,51 @@ describe("web media loading", () => {
     });
   });
 
+  it("strips MEDIA: prefix before reading local file", async () => {
+    const buffer = await sharp({
+      create: { width: 2, height: 2, channels: 3, background: "#0000ff" },
+    })
+      .png()
+      .toBuffer();
+
+    const file = await writeTempFile(buffer, ".png");
+
+    const result = await loadWebMedia(`MEDIA:${file}`, 1024 * 1024);
+
+    expect(result.kind).toBe("image");
+    expect(result.buffer.length).toBeGreaterThan(0);
+  });
+
+  it("strips MEDIA: prefix with whitespace after colon", async () => {
+    const buffer = await sharp({
+      create: { width: 2, height: 2, channels: 3, background: "#0000ff" },
+    })
+      .png()
+      .toBuffer();
+
+    const file = await writeTempFile(buffer, ".png");
+
+    const result = await loadWebMedia(`MEDIA: ${file}`, 1024 * 1024);
+
+    expect(result.kind).toBe("image");
+    expect(result.buffer.length).toBeGreaterThan(0);
+  });
+
+  it("strips MEDIA: prefix with extra whitespace (LLM-friendly)", async () => {
+    const buffer = await sharp({
+      create: { width: 2, height: 2, channels: 3, background: "#0000ff" },
+    })
+      .png()
+      .toBuffer();
+
+    const file = await writeTempFile(buffer, ".png");
+
+    const result = await loadWebMedia(`  MEDIA :  ${file}`, 1024 * 1024);
+
+    expect(result.kind).toBe("image");
+    expect(result.buffer.length).toBeGreaterThan(0);
+  });
+
   it("compresses large local images under the provided cap", async () => {
     const { buffer, file } = await createLargeTestJpeg();
 
diff --git a/src/web/media.ts b/src/web/media.ts
index f7507223a34..244d6767ec0 100644
--- a/src/web/media.ts
+++ b/src/web/media.ts
@@ -173,6 +173,9 @@ async function loadWebMediaInternal(
     localRoots,
     readFile: readFileOverride,
   } = options;
+  // Strip MEDIA: prefix used by agent tools (e.g. TTS) to tag media paths.
+  // Be lenient: LLM output may add extra whitespace (e.g. "  MEDIA :  /tmp/x.png").
+  mediaUrl = mediaUrl.replace(/^\s*MEDIA\s*:\s*/i, "");
   // Use fileURLToPath for proper handling of file:// URLs (handles file://localhost/path, etc.)
   if (mediaUrl.startsWith("file://")) {
     try {
diff --git a/src/web/monitor-inbox.test-harness.ts b/src/web/monitor-inbox.test-harness.ts
index 27602f83ad0..5d5eeed9052 100644
--- a/src/web/monitor-inbox.test-harness.ts
+++ b/src/web/monitor-inbox.test-harness.ts
@@ -3,9 +3,12 @@ import fsSync from "node:fs";
 import os from "node:os";
 import path from "node:path";
 import { afterEach, beforeEach, vi } from "vitest";
-import type { MockFn } from "../test-utils/vitest-mock-fn.js";
 import { resetLogger, setLoggerOverride } from "../logging.js";
 
+// Avoid exporting vitest mock types (TS2742 under pnpm + d.ts emit).
+// oxlint-disable-next-line typescript/no-explicit-any
+type AnyMockFn = any;
+
 export const DEFAULT_ACCOUNT_ID = "default";
 
 export const DEFAULT_WEB_INBOX_CONFIG = {
@@ -21,28 +24,24 @@ export const DEFAULT_WEB_INBOX_CONFIG = {
   },
 } as const;
 
-export const mockLoadConfig: MockFn<() => typeof DEFAULT_WEB_INBOX_CONFIG> = vi
-  .fn()
-  .mockReturnValue(DEFAULT_WEB_INBOX_CONFIG);
+export const mockLoadConfig: AnyMockFn = vi.fn().mockReturnValue(DEFAULT_WEB_INBOX_CONFIG);
 
-export const readAllowFromStoreMock: MockFn<(...args: unknown[]) => Promise<unknown[]>> = vi
+export const readAllowFromStoreMock: AnyMockFn = vi.fn().mockResolvedValue([]);
+export const upsertPairingRequestMock: AnyMockFn = vi
   .fn()
-  .mockResolvedValue([]);
-export const upsertPairingRequestMock: MockFn<
-  (...args: unknown[]) => Promise<{ code: string; created: boolean }>
-> = vi.fn().mockResolvedValue({ code: "PAIRCODE", created: true });
+  .mockResolvedValue({ code: "PAIRCODE", created: true });
 
 export type MockSock = {
   ev: EventEmitter;
-  ws: { close: MockFn };
-  sendPresenceUpdate: MockFn;
-  sendMessage: MockFn;
-  readMessages: MockFn;
-  updateMediaMessage: MockFn;
+  ws: { close: AnyMockFn };
+  sendPresenceUpdate: AnyMockFn;
+  sendMessage: AnyMockFn;
+  readMessages: AnyMockFn;
+  updateMediaMessage: AnyMockFn;
   logger: Record<string, unknown>;
   signalRepository: {
     lidMapping: {
-      getPNForLID: MockFn;
+      getPNForLID: AnyMockFn;
     };
   };
   user: { id: string };