diff --git a/extensions/matrix/src/matrix/monitor/handler.ts b/extensions/matrix/src/matrix/monitor/handler.ts
index 7ef3aa7f331..8412ba4dfd4 100644
--- a/extensions/matrix/src/matrix/monitor/handler.ts
+++ b/extensions/matrix/src/matrix/monitor/handler.ts
@@ -3,6 +3,7 @@ import {
   createTypingCallbacks,
   ensureConfiguredAcpRouteReady,
   formatAllowlistMatchMeta,
+  getAgentScopedMediaLocalRoots,
   logInboundDrop,
   logTypingFailure,
   resolveControlCommandGate,
@@ -662,6 +663,7 @@ export function createMatrixRoomMessageHandler(params: MatrixMonitorHandlerParam
         channel: "matrix",
         accountId: route.accountId,
       });
+      const mediaLocalRoots = getAgentScopedMediaLocalRoots(cfg, route.agentId);
       const { onModelSelected, ...prefixOptions } = createReplyPrefixOptions({
         cfg,
         agentId: route.agentId,
@@ -705,6 +707,7 @@ export function createMatrixRoomMessageHandler(params: MatrixMonitorHandlerParam
               replyToMode,
               threadId: threadTarget,
               accountId: route.accountId,
+              mediaLocalRoots,
               tableMode,
             });
             didSendReply = true;
diff --git a/extensions/matrix/src/matrix/monitor/replies.test.ts b/extensions/matrix/src/matrix/monitor/replies.test.ts
index f56a6e0e387..33ed0bba226 100644
--- a/extensions/matrix/src/matrix/monitor/replies.test.ts
+++ b/extensions/matrix/src/matrix/monitor/replies.test.ts
@@ -96,18 +96,27 @@ describe("deliverMatrixReplies", () => {
       runtime: runtimeEnv,
       textLimit: 4000,
       replyToMode: "all",
+      mediaLocalRoots: ["/tmp/openclaw-matrix-test"],
     });
 
     expect(sendMessageMatrixMock).toHaveBeenCalledTimes(3);
     expect(sendMessageMatrixMock.mock.calls[0]).toEqual([
       "room:2",
       "caption",
-      expect.objectContaining({ mediaUrl: "https://example.com/a.jpg", replyToId: "reply-media" }),
+      expect.objectContaining({
+        mediaUrl: "https://example.com/a.jpg",
+        mediaLocalRoots: ["/tmp/openclaw-matrix-test"],
+        replyToId: "reply-media",
+      }),
     ]);
     expect(sendMessageMatrixMock.mock.calls[1]).toEqual([
       "room:2",
       "",
-      expect.objectContaining({ mediaUrl: "https://example.com/b.jpg", replyToId: "reply-media" }),
+      expect.objectContaining({
+        mediaUrl: "https://example.com/b.jpg",
+        mediaLocalRoots: ["/tmp/openclaw-matrix-test"],
+        replyToId: "reply-media",
+      }),
     ]);
     expect(sendMessageMatrixMock.mock.calls[2]?.[2]).toEqual(
       expect.objectContaining({ replyToId: "reply-text" }),
diff --git a/extensions/matrix/src/matrix/monitor/replies.ts b/extensions/matrix/src/matrix/monitor/replies.ts
index 5b47a8d1d98..8874b688591 100644
--- a/extensions/matrix/src/matrix/monitor/replies.ts
+++ b/extensions/matrix/src/matrix/monitor/replies.ts
@@ -43,6 +43,7 @@ export async function deliverMatrixReplies(params: {
   replyToMode: "off" | "first" | "all";
   threadId?: string;
   accountId?: string;
+  mediaLocalRoots?: readonly string[];
   tableMode?: MarkdownTableMode;
 }): Promise<void> {
   const core = getMatrixRuntime();
@@ -122,6 +123,7 @@ export async function deliverMatrixReplies(params: {
         client: params.client,
         cfg: params.cfg,
         mediaUrl,
+        mediaLocalRoots: params.mediaLocalRoots,
         replyToId: replyToIdForReply,
         threadId: params.threadId,
         audioAsVoice: reply.audioAsVoice,
diff --git a/src/plugin-sdk/matrix.ts b/src/plugin-sdk/matrix.ts
index f64749e638b..84984d083a0 100644
--- a/src/plugin-sdk/matrix.ts
+++ b/src/plugin-sdk/matrix.ts
@@ -122,6 +122,7 @@ export {
   resolveMatrixMigrationSnapshotMarkerPath,
   resolveMatrixMigrationSnapshotOutputDir,
 } from "../infra/matrix-migration-snapshot.js";
+export { getAgentScopedMediaLocalRoots } from "../media/local-roots.js";
 export { fetchWithSsrFGuard } from "../infra/net/fetch-guard.js";
 export { isPrivateOrLoopbackHost } from "../gateway/net.js";
 export {