diff --git a/extensions/matrix/src/channel.directory.test.ts b/extensions/matrix/src/channel.directory.test.ts
index 3e937934fd9..ec0ea8244b7 100644
--- a/extensions/matrix/src/channel.directory.test.ts
+++ b/extensions/matrix/src/channel.directory.test.ts
@@ -157,6 +157,25 @@ describe("matrix directory", () => {
     });
   });
 
+  it("accepts raw room ids when inferring Matrix direct user ids", () => {
+    expect(
+      matrixPlugin.threading?.buildToolContext?.({
+        cfg: {} as CoreConfig,
+        context: {
+          From: "user:@alice:example.org",
+          To: "!dm:example.org",
+          ChatType: "direct",
+        },
+        hasRepliedRef: { value: false },
+      }),
+    ).toEqual({
+      currentChannelId: "!dm:example.org",
+      currentThreadTs: undefined,
+      currentDirectUserId: "@alice:example.org",
+      hasRepliedRef: { value: false },
+    });
+  });
+
   it("resolves group mention policy from account config", () => {
     const cfg = {
       channels: {
diff --git a/extensions/matrix/src/matrix/send/targets.test.ts b/extensions/matrix/src/matrix/send/targets.test.ts
index 3e3610cd300..9a60393b7f8 100644
--- a/extensions/matrix/src/matrix/send/targets.test.ts
+++ b/extensions/matrix/src/matrix/send/targets.test.ts
@@ -88,6 +88,26 @@ describe("resolveMatrixRoomId", () => {
 
     expect(resolved).toBe(roomId);
   });
+
+  it("accepts nested Matrix user target prefixes", async () => {
+    const userId = "@prefixed:example.org";
+    const roomId = "!prefixed-room:example.org";
+    const client = {
+      getAccountData: vi.fn().mockResolvedValue({
+        [userId]: [roomId],
+      }),
+      getJoinedRooms: vi.fn(),
+      getJoinedRoomMembers: vi.fn(),
+      setAccountData: vi.fn(),
+      resolveRoom: vi.fn(),
+    } as unknown as MatrixClient;
+
+    const resolved = await resolveMatrixRoomId(client, `matrix:user:${userId}`);
+
+    expect(resolved).toBe(roomId);
+    // oxlint-disable-next-line typescript/unbound-method
+    expect(client.resolveRoom).not.toHaveBeenCalled();
+  });
 });
 
 describe("normalizeThreadId", () => {
diff --git a/extensions/matrix/src/matrix/send/targets.ts b/extensions/matrix/src/matrix/send/targets.ts
index 8d358ecf825..c459a066be4 100644
--- a/extensions/matrix/src/matrix/send/targets.ts
+++ b/extensions/matrix/src/matrix/send/targets.ts
@@ -1,4 +1,5 @@
 import type { MatrixClient } from "../sdk.js";
+import { isMatrixQualifiedUserId, normalizeMatrixResolvableTarget } from "../target-ids.js";
 import { EventType, type MatrixDirectAccountData } from "./types.js";
 
 function normalizeTarget(raw: string): string {
@@ -61,7 +62,7 @@ async function persistDirectRoom(
 
 async function resolveDirectRoomId(client: MatrixClient, userId: string): Promise<string> {
   const trimmed = userId.trim();
-  if (!trimmed.startsWith("@")) {
+  if (!isMatrixQualifiedUserId(trimmed)) {
     throw new Error(`Matrix user IDs must be fully qualified (got "${trimmed}")`);
   }
 
@@ -124,21 +125,12 @@ async function resolveDirectRoomId(client: MatrixClient, userId: string): Promis
 }
 
 export async function resolveMatrixRoomId(client: MatrixClient, raw: string): Promise<string> {
-  const target = normalizeTarget(raw);
+  const target = normalizeMatrixResolvableTarget(normalizeTarget(raw));
   const lowered = target.toLowerCase();
-  if (lowered.startsWith("matrix:")) {
-    return await resolveMatrixRoomId(client, target.slice("matrix:".length));
-  }
-  if (lowered.startsWith("room:")) {
-    return await resolveMatrixRoomId(client, target.slice("room:".length));
-  }
-  if (lowered.startsWith("channel:")) {
-    return await resolveMatrixRoomId(client, target.slice("channel:".length));
-  }
   if (lowered.startsWith("user:")) {
     return await resolveDirectRoomId(client, target.slice("user:".length));
   }
-  if (target.startsWith("@")) {
+  if (isMatrixQualifiedUserId(target)) {
     return await resolveDirectRoomId(client, target);
   }
   if (target.startsWith("#")) {
diff --git a/extensions/matrix/src/matrix/target-ids.ts b/extensions/matrix/src/matrix/target-ids.ts
index 6cd90a5fb6f..4f5605f0439 100644
--- a/extensions/matrix/src/matrix/target-ids.ts
+++ b/extensions/matrix/src/matrix/target-ids.ts
@@ -1,39 +1,46 @@
 type MatrixTarget =
   | { kind: "room"; id: string }
   | { kind: "user"; id: string };
+const MATRIX_PREFIX = "matrix:";
+const ROOM_PREFIX = "room:";
+const CHANNEL_PREFIX = "channel:";
+const USER_PREFIX = "user:";
 
-function stripPrefix(value: string, prefix: string): string {
-  return value.toLowerCase().startsWith(prefix) ? value.slice(prefix.length) : value;
+function stripKnownPrefixes(raw: string, prefixes: readonly string[]): string {
+  let normalized = raw.trim();
+  while (normalized) {
+    const lowered = normalized.toLowerCase();
+    const matched = prefixes.find((prefix) => lowered.startsWith(prefix));
+    if (!matched) {
+      return normalized;
+    }
+    normalized = normalized.slice(matched.length).trim();
+  }
+  return normalized;
 }
 
-function parseMatrixTarget(raw: string): MatrixTarget | null {
-  let value = raw.trim();
-  if (!value) {
+export function resolveMatrixTargetIdentity(raw: string): MatrixTarget | null {
+  const normalized = stripKnownPrefixes(raw, [MATRIX_PREFIX]);
+  if (!normalized) {
     return null;
   }
-  value = stripPrefix(value, "matrix:");
-  if (!value) {
-    return null;
-  }
-  if (value.toLowerCase().startsWith("room:")) {
-    const id = value.slice("room:".length).trim();
-    return id ? { kind: "room", id } : null;
-  }
-  if (value.toLowerCase().startsWith("channel:")) {
-    const id = value.slice("channel:".length).trim();
-    return id ? { kind: "room", id } : null;
-  }
-  if (value.toLowerCase().startsWith("user:")) {
-    const id = value.slice("user:".length).trim();
+  const lowered = normalized.toLowerCase();
+  if (lowered.startsWith(USER_PREFIX)) {
+    const id = normalized.slice(USER_PREFIX.length).trim();
     return id ? { kind: "user", id } : null;
   }
-  if (value.startsWith("!") || value.startsWith("#")) {
-    return { kind: "room", id: value };
+  if (lowered.startsWith(ROOM_PREFIX)) {
+    const id = normalized.slice(ROOM_PREFIX.length).trim();
+    return id ? { kind: "room", id } : null;
   }
-  if (value.startsWith("@")) {
-    return { kind: "user", id: value };
+  if (lowered.startsWith(CHANNEL_PREFIX)) {
+    const id = normalized.slice(CHANNEL_PREFIX.length).trim();
+    return id ? { kind: "room", id } : null;
   }
-  return { kind: "room", id: value };
+  if (isMatrixQualifiedUserId(normalized)) {
+    return { kind: "user", id: normalized };
+  }
+  return { kind: "room", id: normalized };
 }
 
 export function isMatrixQualifiedUserId(raw: string): boolean {
@@ -41,28 +48,41 @@ export function isMatrixQualifiedUserId(raw: string): boolean {
   return trimmed.startsWith("@") && trimmed.includes(":");
 }
 
-export function normalizeMatrixDirectoryUserId(raw: string): string | null {
-  const parsed = parseMatrixTarget(raw);
-  if (!parsed || parsed.kind !== "user") {
-    return null;
-  }
-  return `user:${parsed.id}`;
+export function normalizeMatrixResolvableTarget(raw: string): string {
+  return stripKnownPrefixes(raw, [MATRIX_PREFIX, ROOM_PREFIX, CHANNEL_PREFIX]);
 }
 
-export function normalizeMatrixDirectoryGroupId(raw: string): string | null {
-  const parsed = parseMatrixTarget(raw);
-  if (!parsed || parsed.kind !== "room") {
-    return null;
-  }
-  return `room:${parsed.id}`;
+export function normalizeMatrixMessagingTarget(raw: string): string | undefined {
+  const normalized = stripKnownPrefixes(raw, [
+    MATRIX_PREFIX,
+    ROOM_PREFIX,
+    CHANNEL_PREFIX,
+    USER_PREFIX,
+  ]);
+  return normalized || undefined;
 }
 
-export function normalizeMatrixMessagingTarget(raw: string): string {
-  const parsed = parseMatrixTarget(raw);
-  if (!parsed) {
-    throw new Error("Matrix target is required");
+export function normalizeMatrixDirectoryUserId(raw: string): string | undefined {
+  const normalized = stripKnownPrefixes(raw, [MATRIX_PREFIX, USER_PREFIX]);
+  if (!normalized || normalized === "*") {
+    return undefined;
   }
-  return `${parsed.kind}:${parsed.id}`;
+  return isMatrixQualifiedUserId(normalized) ? `user:${normalized}` : normalized;
+}
+
+export function normalizeMatrixDirectoryGroupId(raw: string): string | undefined {
+  const normalized = stripKnownPrefixes(raw, [MATRIX_PREFIX]);
+  if (!normalized || normalized === "*") {
+    return undefined;
+  }
+  const lowered = normalized.toLowerCase();
+  if (lowered.startsWith(ROOM_PREFIX) || lowered.startsWith(CHANNEL_PREFIX)) {
+    return normalized;
+  }
+  if (normalized.startsWith("!")) {
+    return `room:${normalized}`;
+  }
+  return normalized;
 }
 
 export function resolveMatrixDirectUserId(params: {
@@ -70,17 +90,13 @@ export function resolveMatrixDirectUserId(params: {
   to?: string;
   chatType?: string;
 }): string | undefined {
-  if (params.chatType?.trim().toLowerCase() !== "direct") {
+  if (params.chatType !== "direct") {
     return undefined;
   }
-  const from = typeof params.from === "string" ? parseMatrixTarget(params.from) : null;
-  if (from?.kind === "user") {
-    return from.id;
+  const roomId = normalizeMatrixResolvableTarget(params.to ?? "");
+  if (!roomId.startsWith("!")) {
+    return undefined;
   }
-  const to = typeof params.to === "string" ? parseMatrixTarget(params.to) : null;
-  return to?.kind === "user" ? to.id : undefined;
-}
-
-export function resolveMatrixTargetIdentity(raw: string): MatrixTarget | null {
-  return parseMatrixTarget(raw);
+  const userId = stripKnownPrefixes(params.from ?? "", [MATRIX_PREFIX, USER_PREFIX]);
+  return isMatrixQualifiedUserId(userId) ? userId : undefined;
 }
diff --git a/extensions/matrix/src/resolve-targets.test.ts b/extensions/matrix/src/resolve-targets.test.ts
index ad9c14faf65..c92b8d0019d 100644
--- a/extensions/matrix/src/resolve-targets.test.ts
+++ b/extensions/matrix/src/resolve-targets.test.ts
@@ -63,10 +63,10 @@ describe("resolveMatrixTargets (users)", () => {
 
     expect(result?.resolved).toBe(true);
     expect(result?.id).toBe("!two:example.org");
-    expect(result?.note).toBe("multiple matches; chose first");
+    expect(result?.note).toBeUndefined();
   });
 
-  it("reuses directory lookups for duplicate inputs", async () => {
+  it("reuses directory lookups for normalized duplicate inputs", async () => {
     vi.mocked(listMatrixDirectoryPeersLive).mockResolvedValue([
       { kind: "user", id: "@alice:example.org", name: "Alice" },
     ]);
@@ -76,7 +76,7 @@ describe("resolveMatrixTargets (users)", () => {
 
     const userResults = await resolveMatrixTargets({
       cfg: {},
-      inputs: ["Alice", "Alice"],
+      inputs: ["Alice", " alice "],
       kind: "user",
     });
     const groupResults = await resolveMatrixTargets({
@@ -90,4 +90,34 @@ describe("resolveMatrixTargets (users)", () => {
     expect(listMatrixDirectoryPeersLive).toHaveBeenCalledTimes(1);
     expect(listMatrixDirectoryGroupsLive).toHaveBeenCalledTimes(1);
   });
+
+  it("accepts prefixed fully qualified ids without directory lookups", async () => {
+    const userResults = await resolveMatrixTargets({
+      cfg: {},
+      inputs: ["matrix:user:@alice:example.org"],
+      kind: "user",
+    });
+    const groupResults = await resolveMatrixTargets({
+      cfg: {},
+      inputs: ["matrix:room:!team:example.org"],
+      kind: "group",
+    });
+
+    expect(userResults).toEqual([
+      {
+        input: "matrix:user:@alice:example.org",
+        resolved: true,
+        id: "@alice:example.org",
+      },
+    ]);
+    expect(groupResults).toEqual([
+      {
+        input: "matrix:room:!team:example.org",
+        resolved: true,
+        id: "!team:example.org",
+      },
+    ]);
+    expect(listMatrixDirectoryPeersLive).not.toHaveBeenCalled();
+    expect(listMatrixDirectoryGroupsLive).not.toHaveBeenCalled();
+  });
 });
diff --git a/extensions/matrix/src/resolve-targets.ts b/extensions/matrix/src/resolve-targets.ts
index d5c36d3de2b..823afb09f1d 100644
--- a/extensions/matrix/src/resolve-targets.ts
+++ b/extensions/matrix/src/resolve-targets.ts
@@ -5,12 +5,17 @@ import type {
   RuntimeEnv,
 } from "openclaw/plugin-sdk/matrix";
 import { listMatrixDirectoryGroupsLive, listMatrixDirectoryPeersLive } from "./directory-live.js";
+import { isMatrixQualifiedUserId, normalizeMatrixMessagingTarget } from "./matrix/target-ids.js";
+
+function normalizeLookupQuery(query: string): string {
+  return query.trim().toLowerCase();
+}
 
 function findExactDirectoryMatches(
   matches: ChannelDirectoryEntry[],
   query: string,
 ): ChannelDirectoryEntry[] {
-  const normalized = query.trim().toLowerCase();
+  const normalized = normalizeLookupQuery(query);
   if (!normalized) {
     return [];
   }
@@ -25,12 +30,21 @@ function findExactDirectoryMatches(
 function pickBestGroupMatch(
   matches: ChannelDirectoryEntry[],
   query: string,
-): ChannelDirectoryEntry | undefined {
+): { best?: ChannelDirectoryEntry; note?: string } {
   if (matches.length === 0) {
-    return undefined;
+    return {};
   }
-  const [exact] = findExactDirectoryMatches(matches, query);
-  return exact ?? matches[0];
+  const exact = findExactDirectoryMatches(matches, query);
+  if (exact.length > 1) {
+    return { best: exact[0], note: "multiple exact matches; chose first" };
+  }
+  if (exact.length === 1) {
+    return { best: exact[0] };
+  }
+  return {
+    best: matches[0],
+    note: matches.length > 1 ? "multiple matches; chose first" : undefined,
+  };
 }
 
 function pickBestUserMatch(
@@ -51,7 +65,7 @@ function describeUserMatchFailure(matches: ChannelDirectoryEntry[], query: strin
   if (matches.length === 0) {
     return "no matches";
   }
-  const normalized = query.trim().toLowerCase();
+  const normalized = normalizeLookupQuery(query);
   if (!normalized) {
     return "empty input";
   }
@@ -65,6 +79,24 @@ function describeUserMatchFailure(matches: ChannelDirectoryEntry[], query: strin
   return "no exact match; use full Matrix ID";
 }
 
+async function readCachedMatches(
+  cache: Map<string, ChannelDirectoryEntry[]>,
+  query: string,
+  lookup: (query: string) => Promise<ChannelDirectoryEntry[]>,
+): Promise<ChannelDirectoryEntry[]> {
+  const key = normalizeLookupQuery(query);
+  if (!key) {
+    return [];
+  }
+  const cached = cache.get(key);
+  if (cached) {
+    return cached;
+  }
+  const matches = await lookup(query.trim());
+  cache.set(key, matches);
+  return matches;
+}
+
 export async function resolveMatrixTargets(params: {
   cfg: unknown;
   inputs: string[];
@@ -75,34 +107,6 @@ export async function resolveMatrixTargets(params: {
   const userLookupCache = new Map<string, ChannelDirectoryEntry[]>();
   const groupLookupCache = new Map<string, ChannelDirectoryEntry[]>();
 
-  const readUserMatches = async (query: string): Promise<ChannelDirectoryEntry[]> => {
-    const cached = userLookupCache.get(query);
-    if (cached) {
-      return cached;
-    }
-    const matches = await listMatrixDirectoryPeersLive({
-      cfg: params.cfg,
-      query,
-      limit: 5,
-    });
-    userLookupCache.set(query, matches);
-    return matches;
-  };
-
-  const readGroupMatches = async (query: string): Promise<ChannelDirectoryEntry[]> => {
-    const cached = groupLookupCache.get(query);
-    if (cached) {
-      return cached;
-    }
-    const matches = await listMatrixDirectoryGroupsLive({
-      cfg: params.cfg,
-      query,
-      limit: 5,
-    });
-    groupLookupCache.set(query, matches);
-    return matches;
-  };
-
   for (const input of params.inputs) {
     const trimmed = input.trim();
     if (!trimmed) {
@@ -110,12 +114,19 @@ export async function resolveMatrixTargets(params: {
       continue;
     }
     if (params.kind === "user") {
-      if (trimmed.startsWith("@") && trimmed.includes(":")) {
-        results.push({ input, resolved: true, id: trimmed });
+      const normalizedTarget = normalizeMatrixMessagingTarget(trimmed);
+      if (normalizedTarget && isMatrixQualifiedUserId(normalizedTarget)) {
+        results.push({ input, resolved: true, id: normalizedTarget });
         continue;
       }
       try {
-        const matches = await readUserMatches(trimmed);
+        const matches = await readCachedMatches(userLookupCache, trimmed, (query) =>
+          listMatrixDirectoryPeersLive({
+            cfg: params.cfg,
+            query,
+            limit: 5,
+          }),
+        );
         const best = pickBestUserMatch(matches, trimmed);
         results.push({
           input,
@@ -130,15 +141,26 @@ export async function resolveMatrixTargets(params: {
       }
       continue;
     }
+    const normalizedTarget = normalizeMatrixMessagingTarget(trimmed);
+    if (normalizedTarget?.startsWith("!")) {
+      results.push({ input, resolved: true, id: normalizedTarget });
+      continue;
+    }
     try {
-      const matches = await readGroupMatches(trimmed);
-      const best = pickBestGroupMatch(matches, trimmed);
+      const matches = await readCachedMatches(groupLookupCache, trimmed, (query) =>
+        listMatrixDirectoryGroupsLive({
+          cfg: params.cfg,
+          query,
+          limit: 5,
+        }),
+      );
+      const { best, note } = pickBestGroupMatch(matches, trimmed);
       results.push({
         input,
         resolved: Boolean(best?.id),
         id: best?.id,
         name: best?.name,
-        note: matches.length > 1 ? "multiple matches; chose first" : undefined,
+        note,
       });
     } catch (err) {
       params.runtime?.error?.(`matrix resolve failed: ${String(err)}`);