diff --git a/extensions/mattermost/src/mattermost/accounts.ts b/extensions/mattermost/src/mattermost/accounts.ts
index cb864d467ab..ee3303ef80c 100644
--- a/extensions/mattermost/src/mattermost/accounts.ts
+++ b/extensions/mattermost/src/mattermost/accounts.ts
@@ -17,8 +17,8 @@ import type {
 import { normalizeMattermostBaseUrl } from "./client.js";
 import type { OpenClawConfig } from "./runtime-api.js";
 
-export type MattermostTokenSource = "env" | "config" | "none";
-export type MattermostBaseUrlSource = "env" | "config" | "none";
+type MattermostTokenSource = "env" | "config" | "none";
+type MattermostBaseUrlSource = "env" | "config" | "none";
 
 export type ResolvedMattermostAccount = {
   accountId: string;
diff --git a/extensions/mattermost/src/mattermost/draft-stream.ts b/extensions/mattermost/src/mattermost/draft-stream.ts
index c022fccc845..61e44e6335f 100644
--- a/extensions/mattermost/src/mattermost/draft-stream.ts
+++ b/extensions/mattermost/src/mattermost/draft-stream.ts
@@ -9,7 +9,7 @@ import {
 const MATTERMOST_STREAM_MAX_CHARS = 4000;
 const DEFAULT_THROTTLE_MS = 1000;
 
-export type MattermostDraftStream = {
+type MattermostDraftStream = {
   update: (text: string) => void;
   flush: () => Promise<void>;
   postId: () => string | undefined;
@@ -20,7 +20,7 @@ export type MattermostDraftStream = {
   forceNewMessage: () => void;
 };
 
-export function normalizeMattermostDraftText(text: string, maxChars: number): string {
+function normalizeMattermostDraftText(text: string, maxChars: number): string {
   const trimmed = text.trim();
   if (!trimmed) {
     return "";
diff --git a/extensions/mattermost/src/mattermost/interactions.ts b/extensions/mattermost/src/mattermost/interactions.ts
index 4c5f77af65d..2735f621697 100644
--- a/extensions/mattermost/src/mattermost/interactions.ts
+++ b/extensions/mattermost/src/mattermost/interactions.ts
@@ -18,7 +18,7 @@ const SIGNED_CHANNEL_ID_CONTEXT_KEY = "__openclaw_channel_id";
  * Sent by Mattermost when a user clicks an action button.
  * See: https://developers.mattermost.com/integrate/plugins/interactive-messages/
  */
-export type MattermostInteractionPayload = {
+type MattermostInteractionPayload = {
   user_id: string;
   user_name?: string;
   channel_id: string;
@@ -38,7 +38,7 @@ export type MattermostInteractionResponse = {
   ephemeral_text?: string;
 };
 
-export type MattermostInteractionAuthorizationResult =
+type MattermostInteractionAuthorizationResult =
   | { ok: true }
   | { ok: false; statusCode?: number; response?: MattermostInteractionResponse };
 
@@ -235,7 +235,7 @@ export function verifyInteractionToken(
 
 // ── Button builder helpers ─────────────────────────────────────────────
 
-export type MattermostButton = {
+type MattermostButton = {
   id: string;
   type: "button" | "select";
   name: string;
@@ -246,7 +246,7 @@ export type MattermostButton = {
   };
 };
 
-export type MattermostAttachment = {
+type MattermostAttachment = {
   text?: string;
   actions?: MattermostButton[];
   [key: string]: unknown;
diff --git a/extensions/mattermost/src/mattermost/model-picker.ts b/extensions/mattermost/src/mattermost/model-picker.ts
index 08bf3cf843d..d5f1a7c6d2b 100644
--- a/extensions/mattermost/src/mattermost/model-picker.ts
+++ b/extensions/mattermost/src/mattermost/model-picker.ts
@@ -19,18 +19,18 @@ const ACTION_IDS = {
   back: "mdlback",
 } as const;
 
-export type MattermostModelPickerEntry =
+type MattermostModelPickerEntry =
   | { kind: "summary" }
   | { kind: "providers" }
   | { kind: "models"; provider: string };
 
-export type MattermostModelPickerState =
+type MattermostModelPickerState =
   | { action: "providers"; ownerUserId: string }
   | { action: "back"; ownerUserId: string }
   | { action: "list"; ownerUserId: string; provider: string; page: number }
   | { action: "select"; ownerUserId: string; provider: string; page: number; model: string };
 
-export type MattermostModelPickerRenderedView = {
+type MattermostModelPickerRenderedView = {
   text: string;
   buttons: MattermostInteractiveButtonInput[][];
 };
diff --git a/extensions/mattermost/src/mattermost/probe.ts b/extensions/mattermost/src/mattermost/probe.ts
index 971ea58f8aa..931f541e333 100644
--- a/extensions/mattermost/src/mattermost/probe.ts
+++ b/extensions/mattermost/src/mattermost/probe.ts
@@ -6,7 +6,7 @@ import {
 import { normalizeMattermostBaseUrl, readMattermostError, type MattermostUser } from "./client.js";
 import type { BaseProbeResult } from "./runtime-api.js";
 
-export type MattermostProbe = BaseProbeResult & {
+type MattermostProbe = BaseProbeResult & {
   status?: number | null;
   elapsedMs?: number | null;
   bot?: MattermostUser;
diff --git a/extensions/mattermost/src/mattermost/reconnect.ts b/extensions/mattermost/src/mattermost/reconnect.ts
index 7de004d1c1e..644be7d4800 100644
--- a/extensions/mattermost/src/mattermost/reconnect.ts
+++ b/extensions/mattermost/src/mattermost/reconnect.ts
@@ -1,13 +1,13 @@
-export type ReconnectOutcome = "resolved" | "rejected";
+type ReconnectOutcome = "resolved" | "rejected";
 
-export type ShouldReconnectParams = {
+type ShouldReconnectParams = {
   attempt: number;
   delayMs: number;
   outcome: ReconnectOutcome;
   error?: unknown;
 };
 
-export type RunWithReconnectOpts = {
+type RunWithReconnectOpts = {
   abortSignal?: AbortSignal;
   onError?: (err: unknown) => void;
   onReconnect?: (delayMs: number) => void;
diff --git a/extensions/mattermost/src/mattermost/slash-state.ts b/extensions/mattermost/src/mattermost/slash-state.ts
index c25b0525ea2..f4005a8d58f 100644
--- a/extensions/mattermost/src/mattermost/slash-state.ts
+++ b/extensions/mattermost/src/mattermost/slash-state.ts
@@ -49,7 +49,7 @@ type SlashHandlerMatch =
 
 // ─── Per-account state ───────────────────────────────────────────────────────
 
-export type SlashCommandAccountState = {
+type SlashCommandAccountState = {
   /** Tokens from registered/current commands, used for fast-path routing. */
   commandTokens: Set<string>;
   /** Registered command IDs for cleanup on shutdown. */
diff --git a/extensions/mattermost/src/types.ts b/extensions/mattermost/src/types.ts
index d90830a5c71..78db9bc47d7 100644
--- a/extensions/mattermost/src/types.ts
+++ b/extensions/mattermost/src/types.ts
@@ -5,7 +5,7 @@ export type MattermostReplyToMode = "off" | "first" | "all" | "batched";
 export type MattermostChatTypeKey = "direct" | "channel" | "group";
 
 export type MattermostChatMode = "oncall" | "onmessage" | "onchar";
-export type MattermostNetworkConfig = {
+type MattermostNetworkConfig = {
   /** Dangerous opt-in for self-hosted Mattermost on trusted private/internal hosts. */
   dangerouslyAllowPrivateNetwork?: boolean;
 };