diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1cb1685e8..7f38e9d34 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -12,6 +12,7 @@
 ### Breaking
 - **BREAKING:** Channel auth now prefers config over env for Discord/Telegram/Matrix (env is fallback only). (#1040) — thanks @thewilloftheshadow.
 - **BREAKING:** `clawdbot message` and message tool now require `target` (dropping `to`/`channelId` for destinations). (#1034) — thanks @tobalsan.
+- **BREAKING:** Drop legacy `chatType: "room"` support; use `chatType: "channel"`.
 
 ### Changes
 - Tools: improve `web_fetch` extraction using Readability (with fallback).
diff --git a/src/agents/tools/session-status-tool.ts b/src/agents/tools/session-status-tool.ts
index 45bfe4328..bb1f2616c 100644
--- a/src/agents/tools/session-status-tool.ts
+++ b/src/agents/tools/session-status-tool.ts
@@ -309,7 +309,6 @@ export function createSessionStatusTool(opts?: {
       const isGroup =
         resolved.entry.chatType === "group" ||
         resolved.entry.chatType === "channel" ||
-        resolved.entry.chatType === "room" ||
         resolved.key.startsWith("group:") ||
         resolved.key.includes(":group:") ||
         resolved.key.includes(":channel:");
diff --git a/src/auto-reply/reply/get-reply-run.ts b/src/auto-reply/reply/get-reply-run.ts
index 1cf023312..c6e5d1091 100644
--- a/src/auto-reply/reply/get-reply-run.ts
+++ b/src/auto-reply/reply/get-reply-run.ts
@@ -299,8 +299,7 @@ export async function runPreparedReply(
   });
   const isGroupSession =
     sessionEntry?.chatType === "group" ||
-    sessionEntry?.chatType === "channel" ||
-    sessionEntry?.chatType === "room";
+    sessionEntry?.chatType === "channel";
   const isMainSession = !isGroupSession && sessionKey === normalizeMainKey(sessionCfg?.mainKey);
   prefixedBodyBase = await prependSystemEvents({
     cfg,
diff --git a/src/auto-reply/reply/inbound-context.test.ts b/src/auto-reply/reply/inbound-context.test.ts
index 2cfbbb805..a8155122d 100644
--- a/src/auto-reply/reply/inbound-context.test.ts
+++ b/src/auto-reply/reply/inbound-context.test.ts
@@ -8,7 +8,7 @@ describe("finalizeInboundContext", () => {
     const ctx: MsgContext = {
       Body: "a\\nb\r\nc",
       RawBody: "raw\\nline",
-      ChatType: "room",
+      ChatType: "channel",
       From: "group:123@g.us",
       GroupSubject: "Test",
     };
@@ -35,4 +35,3 @@ describe("finalizeInboundContext", () => {
     expect(ctx.BodyForCommands).toBe("say hi");
   });
 });
-
diff --git a/src/auto-reply/status.ts b/src/auto-reply/status.ts
index b77280c30..66e444456 100644
--- a/src/auto-reply/status.ts
+++ b/src/auto-reply/status.ts
@@ -254,7 +254,6 @@ export function buildStatusMessage(args: StatusArgs): string {
   const isGroupSession =
     entry?.chatType === "group" ||
     entry?.chatType === "channel" ||
-    entry?.chatType === "room" ||
     Boolean(args.sessionKey?.includes(":group:")) ||
     Boolean(args.sessionKey?.includes(":channel:")) ||
     Boolean(args.sessionKey?.startsWith("group:"));
diff --git a/src/channels/chat-type.test.ts b/src/channels/chat-type.test.ts
index dff0d1f7e..c7ceef7e9 100644
--- a/src/channels/chat-type.test.ts
+++ b/src/channels/chat-type.test.ts
@@ -8,13 +8,12 @@ describe("normalizeChatType", () => {
     expect(normalizeChatType("dm")).toBe("direct");
     expect(normalizeChatType("group")).toBe("group");
     expect(normalizeChatType("channel")).toBe("channel");
-    expect(normalizeChatType("room")).toBe("channel");
   });
 
   it("returns undefined for empty/unknown values", () => {
     expect(normalizeChatType(undefined)).toBeUndefined();
     expect(normalizeChatType("")).toBeUndefined();
     expect(normalizeChatType("nope")).toBeUndefined();
+    expect(normalizeChatType("room")).toBeUndefined();
   });
 });
-
diff --git a/src/channels/chat-type.ts b/src/channels/chat-type.ts
index 9e13a0ae5..5aba48dbf 100644
--- a/src/channels/chat-type.ts
+++ b/src/channels/chat-type.ts
@@ -5,7 +5,6 @@ export function normalizeChatType(raw?: string): NormalizedChatType | undefined
   if (!value) return undefined;
   if (value === "direct" || value === "dm") return "direct";
   if (value === "group") return "group";
-  if (value === "channel" || value === "room") return "channel";
+  if (value === "channel") return "channel";
   return undefined;
 }
-
diff --git a/src/commands/sessions.ts b/src/commands/sessions.ts
index e18451924..11a1bc884 100644
--- a/src/commands/sessions.ts
+++ b/src/commands/sessions.ts
@@ -110,7 +110,7 @@ const formatAge = (ms: number | null | undefined) => {
 function classifyKey(key: string, entry?: SessionEntry): SessionRow["kind"] {
   if (key === "global") return "global";
   if (key === "unknown") return "unknown";
-  if (entry?.chatType === "group" || entry?.chatType === "channel" || entry?.chatType === "room") {
+  if (entry?.chatType === "group" || entry?.chatType === "channel") {
     return "group";
   }
   if (key.startsWith("group:") || key.includes(":group:") || key.includes(":channel:")) {
diff --git a/src/commands/status.summary.ts b/src/commands/status.summary.ts
index f310bacc2..8eb73b74b 100644
--- a/src/commands/status.summary.ts
+++ b/src/commands/status.summary.ts
@@ -19,7 +19,7 @@ import type { HeartbeatStatus, SessionStatus, StatusSummary } from "./status.typ
 const classifyKey = (key: string, entry?: SessionEntry): SessionStatus["kind"] => {
   if (key === "global") return "global";
   if (key === "unknown") return "unknown";
-  if (entry?.chatType === "group" || entry?.chatType === "channel" || entry?.chatType === "room") {
+  if (entry?.chatType === "group" || entry?.chatType === "channel") {
     return "group";
   }
   if (key.startsWith("group:") || key.includes(":group:") || key.includes(":channel:")) {
diff --git a/src/config/sessions/types.ts b/src/config/sessions/types.ts
index a95e33ab2..f30354680 100644
--- a/src/config/sessions/types.ts
+++ b/src/config/sessions/types.ts
@@ -10,9 +10,7 @@ export type SessionChannelId = ChannelId | "webchat";
 export type SessionChatType =
   | "direct"
   | "group"
-  | "channel"
-  // Legacy alias for "channel".
-  | "room";
+  | "channel";
 
 export type SessionEntry = {
   /**
diff --git a/src/config/types.base.ts b/src/config/types.base.ts
index e8778fd89..0757783b1 100644
--- a/src/config/types.base.ts
+++ b/src/config/types.base.ts
@@ -41,7 +41,7 @@ export type HumanDelayConfig = {
 export type SessionSendPolicyAction = "allow" | "deny";
 export type SessionSendPolicyMatch = {
   channel?: string;
-  chatType?: "direct" | "group" | "channel" | "room";
+  chatType?: "direct" | "group" | "channel";
   keyPrefix?: string;
 };
 export type SessionSendPolicyRule = {
diff --git a/src/config/types.tools.ts b/src/config/types.tools.ts
index 1b4c32418..f16bdfb44 100644
--- a/src/config/types.tools.ts
+++ b/src/config/types.tools.ts
@@ -2,7 +2,7 @@ import type { AgentElevatedAllowFromConfig, SessionSendPolicyAction } from "./ty
 
 export type MediaUnderstandingScopeMatch = {
   channel?: string;
-  chatType?: "direct" | "group" | "channel" | "room";
+  chatType?: "direct" | "group" | "channel";
   keyPrefix?: string;
 };
 
diff --git a/src/config/zod-schema.core.ts b/src/config/zod-schema.core.ts
index c8479ef37..ce5a637ec 100644
--- a/src/config/zod-schema.core.ts
+++ b/src/config/zod-schema.core.ts
@@ -255,7 +255,6 @@ export const MediaUnderstandingScopeSchema = z
                   z.literal("direct"),
                   z.literal("group"),
                   z.literal("channel"),
-                  z.literal("room"),
                 ])
                 .optional(),
               keyPrefix: z.string().optional(),
diff --git a/src/config/zod-schema.session.ts b/src/config/zod-schema.session.ts
index 1f3e6ff9f..bba312ad0 100644
--- a/src/config/zod-schema.session.ts
+++ b/src/config/zod-schema.session.ts
@@ -43,8 +43,6 @@ export const SessionSchema = z
                       z.literal("direct"),
                       z.literal("group"),
                       z.literal("channel"),
-                      // Legacy alias for "channel".
-                      z.literal("room"),
                     ])
                     .optional(),
                   keyPrefix: z.string().optional(),
diff --git a/src/gateway/session-utils.ts b/src/gateway/session-utils.ts
index 2e8847067..099de7eeb 100644
--- a/src/gateway/session-utils.ts
+++ b/src/gateway/session-utils.ts
@@ -59,7 +59,7 @@ export function loadSessionEntry(sessionKey: string) {
 export function classifySessionKey(key: string, entry?: SessionEntry): GatewaySessionRow["kind"] {
   if (key === "global") return "global";
   if (key === "unknown") return "unknown";
-  if (entry?.chatType === "group" || entry?.chatType === "channel" || entry?.chatType === "room") {
+  if (entry?.chatType === "group" || entry?.chatType === "channel") {
     return "group";
   }
   if (key.startsWith("group:") || key.includes(":group:") || key.includes(":channel:")) {
diff --git a/src/gateway/session-utils.types.ts b/src/gateway/session-utils.types.ts
index 50a60b8c9..d69c7b342 100644
--- a/src/gateway/session-utils.types.ts
+++ b/src/gateway/session-utils.types.ts
@@ -15,7 +15,7 @@ export type GatewaySessionRow = {
   subject?: string;
   room?: string;
   space?: string;
-  chatType?: "direct" | "group" | "channel" | "room";
+  chatType?: "direct" | "group" | "channel";
   updatedAt: number | null;
   sessionId?: string;
   systemSent?: boolean;
diff --git a/src/media-understanding/scope.test.ts b/src/media-understanding/scope.test.ts
index c2c16249f..3f9bff48a 100644
--- a/src/media-understanding/scope.test.ts
+++ b/src/media-understanding/scope.test.ts
@@ -3,17 +3,10 @@ import { describe, expect, it } from "vitest";
 import { normalizeMediaUnderstandingChatType, resolveMediaUnderstandingScope } from "./scope.js";
 
 describe("media understanding scope", () => {
-  it("normalizes channel/room", () => {
+  it("normalizes chatType", () => {
     expect(normalizeMediaUnderstandingChatType("channel")).toBe("channel");
-    expect(normalizeMediaUnderstandingChatType("room")).toBe("channel");
-  });
-
-  it("treats room match as channel", () => {
-    const scope = {
-      rules: [{ action: "deny", match: { chatType: "room" } }],
-    } as const;
-
-    expect(resolveMediaUnderstandingScope({ scope, chatType: "channel" })).toBe("deny");
+    expect(normalizeMediaUnderstandingChatType("dm")).toBe("direct");
+    expect(normalizeMediaUnderstandingChatType("room")).toBeUndefined();
   });
 
   it("matches channel chatType explicitly", () => {
@@ -24,4 +17,3 @@ describe("media understanding scope", () => {
     expect(resolveMediaUnderstandingScope({ scope, chatType: "channel" })).toBe("deny");
   });
 });
-
diff --git a/src/media-understanding/scope.ts b/src/media-understanding/scope.ts
index 9b8cf2eba..7aa71cc5a 100644
--- a/src/media-understanding/scope.ts
+++ b/src/media-understanding/scope.ts
@@ -1,4 +1,5 @@
 import type { MediaUnderstandingScopeConfig } from "../config/types.tools.js";
+import { normalizeChatType } from "../channels/chat-type.js";
 
 export type MediaUnderstandingScopeDecision = "allow" | "deny";
 
@@ -15,12 +16,7 @@ function normalizeMatch(value?: string | null): string | undefined {
 }
 
 export function normalizeMediaUnderstandingChatType(raw?: string | null): string | undefined {
-  const value = raw?.trim().toLowerCase();
-  if (!value) return undefined;
-  if (value === "dm" || value === "direct_message" || value === "private") return "direct";
-  if (value === "groups") return "group";
-  if (value === "room") return "channel";
-  return value;
+  return normalizeChatType(raw ?? undefined);
 }
 
 export function resolveMediaUnderstandingScope(params: {
@@ -33,7 +29,7 @@ export function resolveMediaUnderstandingScope(params: {
   if (!scope) return "allow";
 
   const channel = normalizeMatch(params.channel);
-  const chatType = normalizeMediaUnderstandingChatType(params.chatType) ?? normalizeMatch(params.chatType);
+  const chatType = normalizeMediaUnderstandingChatType(params.chatType);
   const sessionKey = normalizeMatch(params.sessionKey) ?? "";
 
   for (const rule of scope.rules ?? []) {
@@ -41,8 +37,7 @@ export function resolveMediaUnderstandingScope(params: {
     const action = normalizeDecision(rule.action) ?? "allow";
     const match = rule.match ?? {};
     const matchChannel = normalizeMatch(match.channel);
-    const matchChatType =
-      normalizeMediaUnderstandingChatType(match.chatType) ?? normalizeMatch(match.chatType);
+    const matchChatType = normalizeMediaUnderstandingChatType(match.chatType);
     const matchPrefix = normalizeMatch(match.keyPrefix);
 
     if (matchChannel && matchChannel !== channel) continue;