diff --git a/extensions/mattermost/src/channel-config-shared.ts b/extensions/mattermost/src/channel-config-shared.ts
new file mode 100644
index 00000000000..8cdb49c5313
--- /dev/null
+++ b/extensions/mattermost/src/channel-config-shared.ts
@@ -0,0 +1,74 @@
+import { describeAccountSnapshot } from "openclaw/plugin-sdk/account-helpers";
+import { formatNormalizedAllowFromEntries } from "openclaw/plugin-sdk/allow-from";
+import {
+  adaptScopedAccountAccessor,
+  createScopedChannelConfigAdapter,
+} from "openclaw/plugin-sdk/channel-config-helpers";
+import {
+  listMattermostAccountIds,
+  resolveDefaultMattermostAccountId,
+  resolveMattermostAccount,
+  type ResolvedMattermostAccount,
+} from "./mattermost/accounts.js";
+
+export const mattermostMeta = {
+  id: "mattermost",
+  label: "Mattermost",
+  selectionLabel: "Mattermost (plugin)",
+  detailLabel: "Mattermost Bot",
+  docsPath: "/channels/mattermost",
+  docsLabel: "mattermost",
+  blurb: "self-hosted Slack-style chat; install the plugin to enable.",
+  systemImage: "bubble.left.and.bubble.right",
+  order: 65,
+  quickstartAllowFrom: true,
+} as const;
+
+export function normalizeMattermostAllowEntry(entry: string): string {
+  return entry
+    .trim()
+    .replace(/^(mattermost|user):/i, "")
+    .replace(/^@/, "")
+    .toLowerCase();
+}
+
+export function formatMattermostAllowEntry(entry: string): string {
+  const trimmed = entry.trim();
+  if (!trimmed) {
+    return "";
+  }
+  if (trimmed.startsWith("@")) {
+    const username = trimmed.slice(1).trim();
+    return username ? `@${username.toLowerCase()}` : "";
+  }
+  return trimmed.replace(/^(mattermost|user):/i, "").toLowerCase();
+}
+
+export const mattermostConfigAdapter = createScopedChannelConfigAdapter<ResolvedMattermostAccount>({
+  sectionKey: "mattermost",
+  listAccountIds: listMattermostAccountIds,
+  resolveAccount: adaptScopedAccountAccessor(resolveMattermostAccount),
+  defaultAccountId: resolveDefaultMattermostAccountId,
+  clearBaseFields: ["botToken", "baseUrl", "name"],
+  resolveAllowFrom: (account) => account.config.allowFrom,
+  formatAllowFrom: (allowFrom) =>
+    formatNormalizedAllowFromEntries({
+      allowFrom,
+      normalizeEntry: formatMattermostAllowEntry,
+    }),
+});
+
+export function isMattermostConfigured(account: ResolvedMattermostAccount): boolean {
+  return Boolean(account.botToken && account.baseUrl);
+}
+
+export function describeMattermostAccount(account: ResolvedMattermostAccount) {
+  return describeAccountSnapshot({
+    account,
+    configured: isMattermostConfigured(account),
+    extra: {
+      botTokenSource: account.botTokenSource,
+      baseUrl: account.baseUrl,
+    },
+  });
+}
diff --git a/extensions/mattermost/src/channel.setup.ts b/extensions/mattermost/src/channel.setup.ts
index a4543bf16d1..973c2456d7f 100644
--- a/extensions/mattermost/src/channel.setup.ts
+++ b/extensions/mattermost/src/channel.setup.ts
@@ -1,59 +1,15 @@
-import { describeAccountSnapshot } from "openclaw/plugin-sdk/account-helpers";
-import { formatNormalizedAllowFromEntries } from "openclaw/plugin-sdk/allow-from";
-import {
-  adaptScopedAccountAccessor,
-  createScopedChannelConfigAdapter,
-} from "openclaw/plugin-sdk/channel-config-helpers";
 import type { ChannelPlugin } from "./channel-api.js";
-import { MattermostChannelConfigSchema } from "./config-surface.js";
 import {
-  listMattermostAccountIds,
-  resolveDefaultMattermostAccountId,
-  resolveMattermostAccount,
-  type ResolvedMattermostAccount,
-} from "./mattermost/accounts.js";
+  describeMattermostAccount,
+  isMattermostConfigured,
+  mattermostConfigAdapter,
+  mattermostMeta,
+} from "./channel-config-shared.js";
+import { MattermostChannelConfigSchema } from "./config-surface.js";
+import { type ResolvedMattermostAccount } from "./mattermost/accounts.js";
 import { mattermostSetupAdapter } from "./setup-core.js";
 import { mattermostSetupWizard } from "./setup-surface.js";
 
-const mattermostMeta = {
-  id: "mattermost",
-  label: "Mattermost",
-  selectionLabel: "Mattermost (plugin)",
-  detailLabel: "Mattermost Bot",
-  docsPath: "/channels/mattermost",
-  docsLabel: "mattermost",
-  blurb: "self-hosted Slack-style chat; install the plugin to enable.",
-  systemImage: "bubble.left.and.bubble.right",
-  order: 65,
-  quickstartAllowFrom: true,
-} as const;
-
-function formatAllowEntry(entry: string): string {
-  const trimmed = entry.trim();
-  if (!trimmed) {
-    return "";
-  }
-  if (trimmed.startsWith("@")) {
-    const username = trimmed.slice(1).trim();
-    return username ? `@${username.toLowerCase()}` : "";
-  }
-  return trimmed.replace(/^(mattermost|user):/i, "").toLowerCase();
-}
-
-const mattermostConfigAdapter = createScopedChannelConfigAdapter<ResolvedMattermostAccount>({
-  sectionKey: "mattermost",
-  listAccountIds: listMattermostAccountIds,
-  resolveAccount: adaptScopedAccountAccessor(resolveMattermostAccount),
-  defaultAccountId: resolveDefaultMattermostAccountId,
-  clearBaseFields: ["botToken", "baseUrl", "name"],
-  resolveAllowFrom: (account) => account.config.allowFrom,
-  formatAllowFrom: (allowFrom) =>
-    formatNormalizedAllowFromEntries({
-      allowFrom,
-      normalizeEntry: formatAllowEntry,
-    }),
-});
-
 export const mattermostSetupPlugin: ChannelPlugin<ResolvedMattermostAccount> = {
   id: "mattermost",
   meta: {
@@ -70,16 +26,8 @@ export const mattermostSetupPlugin: ChannelPlugin<ResolvedMattermostAccount> = {
   configSchema: MattermostChannelConfigSchema,
   config: {
     ...mattermostConfigAdapter,
-    isConfigured: (account) => Boolean(account.botToken && account.baseUrl),
-    describeAccount: (account) =>
-      describeAccountSnapshot({
-        account,
-        configured: Boolean(account.botToken && account.baseUrl),
-        extra: {
-          botTokenSource: account.botTokenSource,
-          baseUrl: account.baseUrl,
-        },
-      }),
+    isConfigured: isMattermostConfigured,
+    describeAccount: describeMattermostAccount,
   },
   setup: mattermostSetupAdapter,
   setupWizard: mattermostSetupWizard,
diff --git a/extensions/mattermost/src/channel.ts b/extensions/mattermost/src/channel.ts
index 8a777ba51c5..111e25d6017 100644
--- a/extensions/mattermost/src/channel.ts
+++ b/extensions/mattermost/src/channel.ts
@@ -1,11 +1,5 @@
 import { Type } from "@sinclair/typebox";
-import { describeAccountSnapshot } from "openclaw/plugin-sdk/account-helpers";
-import { formatNormalizedAllowFromEntries } from "openclaw/plugin-sdk/allow-from";
 import { createMessageToolButtonsSchema } from "openclaw/plugin-sdk/channel-actions";
-import {
-  adaptScopedAccountAccessor,
-  createScopedChannelConfigAdapter,
-} from "openclaw/plugin-sdk/channel-config-helpers";
 import type {
   ChannelMessageActionAdapter,
   ChannelMessageActionName,
@@ -29,6 +23,13 @@ import {
   DEFAULT_ACCOUNT_ID,
   type ChannelPlugin,
 } from "./channel-api.js";
+import {
+  describeMattermostAccount,
+  isMattermostConfigured,
+  mattermostConfigAdapter,
+  mattermostMeta as meta,
+  normalizeMattermostAllowEntry as normalizeAllowEntry,
+} from "./channel-config-shared.js";
 import { MattermostChannelConfigSchema } from "./config-surface.js";
 import { mattermostDoctor } from "./doctor.js";
 import { resolveMattermostGroupRequireMention } from "./group-mentions.js";
@@ -241,19 +242,6 @@ const mattermostMessageActions: ChannelMessageActionAdapter = {
   },
 };
 
-const meta = {
-  id: "mattermost",
-  label: "Mattermost",
-  selectionLabel: "Mattermost (plugin)",
-  detailLabel: "Mattermost Bot",
-  docsPath: "/channels/mattermost",
-  docsLabel: "mattermost",
-  blurb: "self-hosted Slack-style chat; install the plugin to enable.",
-  systemImage: "bubble.left.and.bubble.right",
-  order: 65,
-  quickstartAllowFrom: true,
-} as const;
-
 function readTrimmedString(value: unknown): string | undefined {
   if (typeof value !== "string") {
     return undefined;
@@ -288,40 +276,6 @@ function readMattermostReplyToId(params: Record<string, unknown>): string | unde
   return readTrimmedString(params.replyToId) ?? readTrimmedString(params.replyTo);
 }
 
-function normalizeAllowEntry(entry: string): string {
-  return entry
-    .trim()
-    .replace(/^(mattermost|user):/i, "")
-    .replace(/^@/, "")
-    .toLowerCase();
-}
-
-function formatAllowEntry(entry: string): string {
-  const trimmed = entry.trim();
-  if (!trimmed) {
-    return "";
-  }
-  if (trimmed.startsWith("@")) {
-    const username = trimmed.slice(1).trim();
-    return username ? `@${username.toLowerCase()}` : "";
-  }
-  return trimmed.replace(/^(mattermost|user):/i, "").toLowerCase();
-}
-
-const mattermostConfigAdapter = createScopedChannelConfigAdapter<ResolvedMattermostAccount>({
-  sectionKey: "mattermost",
-  listAccountIds: listMattermostAccountIds,
-  resolveAccount: adaptScopedAccountAccessor(resolveMattermostAccount),
-  defaultAccountId: resolveDefaultMattermostAccountId,
-  clearBaseFields: ["botToken", "baseUrl", "name"],
-  resolveAllowFrom: (account: ResolvedMattermostAccount) => account.config.allowFrom,
-  formatAllowFrom: (allowFrom) =>
-    formatNormalizedAllowFromEntries({
-      allowFrom,
-      normalizeEntry: formatAllowEntry,
-    }),
-});
-
 export const mattermostPlugin: ChannelPlugin<ResolvedMattermostAccount> = createChatChannelPlugin({
   base: {
     id: "mattermost",
@@ -344,16 +298,8 @@ export const mattermostPlugin: ChannelPlugin<ResolvedMattermostAccount> = create
     configSchema: MattermostChannelConfigSchema,
     config: {
       ...mattermostConfigAdapter,
-      isConfigured: (account) => Boolean(account.botToken && account.baseUrl),
-      describeAccount: (account) =>
-        describeAccountSnapshot({
-          account,
-          configured: Boolean(account.botToken && account.baseUrl),
-          extra: {
-            botTokenSource: account.botTokenSource,
-            baseUrl: account.baseUrl,
-          },
-        }),
+      isConfigured: isMattermostConfigured,
+      describeAccount: describeMattermostAccount,
     },
     auth: mattermostApprovalAuth,
     doctor: mattermostDoctor,