diff --git a/extensions/mattermost/src/mattermost/runtime-api.ts b/extensions/mattermost/src/mattermost/runtime-api.ts
index cb133391638..92ba013b183 100644
--- a/extensions/mattermost/src/mattermost/runtime-api.ts
+++ b/extensions/mattermost/src/mattermost/runtime-api.ts
@@ -1 +1,56 @@
-export * from "../../runtime-api.js";
+export type {
+  BaseProbeResult,
+  ChannelAccountSnapshot,
+  ChannelDirectoryEntry,
+  ChatType,
+  HistoryEntry,
+  OpenClawConfig,
+  OpenClawPluginApi,
+  ReplyPayload,
+} from "openclaw/plugin-sdk/core";
+export type { RuntimeEnv } from "openclaw/plugin-sdk/runtime";
+export { buildAgentMediaPayload } from "openclaw/plugin-sdk/agent-media-payload";
+export { resolveAllowlistMatchSimple } from "openclaw/plugin-sdk/allow-from";
+export { logInboundDrop } from "openclaw/plugin-sdk/channel-inbound";
+export { createChannelPairingController } from "openclaw/plugin-sdk/channel-pairing";
+export {
+  DM_GROUP_ACCESS_REASON,
+  readStoreAllowFromForDmPolicy,
+  resolveDmGroupAccessWithLists,
+  resolveEffectiveAllowFromLists,
+} from "openclaw/plugin-sdk/channel-policy";
+export { createChannelReplyPipeline } from "openclaw/plugin-sdk/channel-reply-pipeline";
+export { logTypingFailure } from "openclaw/plugin-sdk/channel-feedback";
+export {
+  buildModelsProviderData,
+  listSkillCommandsForAgents,
+  resolveControlCommandGate,
+} from "openclaw/plugin-sdk/command-auth";
+export {
+  isDangerousNameMatchingEnabled,
+  resolveAllowlistProviderRuntimeGroupPolicy,
+  resolveDefaultGroupPolicy,
+  warnMissingProviderGroupPolicyFallbackOnce,
+} from "openclaw/plugin-sdk/config-runtime";
+export { evaluateSenderGroupAccessForPolicy } from "openclaw/plugin-sdk/group-access";
+export {
+  getAgentScopedMediaLocalRoots,
+  resolveChannelMediaMaxBytes,
+} from "openclaw/plugin-sdk/media-runtime";
+export { loadOutboundMediaFromUrl } from "openclaw/plugin-sdk/outbound-media";
+export {
+  DEFAULT_GROUP_HISTORY_LIMIT,
+  buildPendingHistoryContextFromMap,
+  clearHistoryEntriesIfEnabled,
+  recordPendingHistoryEntryIfEnabled,
+} from "openclaw/plugin-sdk/reply-history";
+export { registerPluginHttpRoute } from "openclaw/plugin-sdk/webhook-targets";
+export {
+  isRequestBodyLimitError,
+  readRequestBodyWithLimit,
+} from "openclaw/plugin-sdk/webhook-ingress";
+export {
+  isTrustedProxyAddress,
+  parseStrictPositiveInteger,
+  resolveClientIp,
+} from "openclaw/plugin-sdk/core";
diff --git a/extensions/mattermost/src/mattermost/send.test.ts b/extensions/mattermost/src/mattermost/send.test.ts
index 2dab3357f2b..18175d11e9c 100644
--- a/extensions/mattermost/src/mattermost/send.test.ts
+++ b/extensions/mattermost/src/mattermost/send.test.ts
@@ -38,6 +38,10 @@ vi.mock("../../runtime-api.js", () => ({
   loadOutboundMediaFromUrl: mockState.loadOutboundMediaFromUrl,
 }));
 
+vi.mock("./runtime-api.js", () => ({
+  loadOutboundMediaFromUrl: mockState.loadOutboundMediaFromUrl,
+}));
+
 vi.mock("openclaw/plugin-sdk/config-runtime", () => ({
   requireRuntimeConfig: (cfg: unknown) => {
     if (cfg) {