diff --git a/extensions/line/api.ts b/extensions/line/api.ts
index 8f7fe4d268b..c4150b2a242 100644
--- a/extensions/line/api.ts
+++ b/extensions/line/api.ts
@@ -1,2 +1,3 @@
+export * from "openclaw/plugin-sdk/line";
 export * from "./src/setup-core.js";
 export * from "./src/setup-surface.js";
diff --git a/extensions/line/src/card-command.ts b/extensions/line/src/card-command.ts
index cc5ec78eeab..f63e42576c9 100644
--- a/extensions/line/src/card-command.ts
+++ b/extensions/line/src/card-command.ts
@@ -1,4 +1,4 @@
-import type { LineChannelData, OpenClawPluginApi, ReplyPayload } from "openclaw/plugin-sdk/line";
+import type { LineChannelData, OpenClawPluginApi, ReplyPayload } from "../api.js";
 import {
   createActionCard,
   createImageCard,
@@ -7,7 +7,7 @@ import {
   createReceiptCard,
   type CardAction,
   type ListItem,
-} from "openclaw/plugin-sdk/line";
+} from "../api.js";
 
 const CARD_USAGE = `Usage: /card <type> "title" "body" [options]
 
diff --git a/extensions/line/src/channel.setup.ts b/extensions/line/src/channel.setup.ts
index 771107dff58..5df541d6286 100644
--- a/extensions/line/src/channel.setup.ts
+++ b/extensions/line/src/channel.setup.ts
@@ -4,12 +4,8 @@ import {
   type ChannelPlugin,
   type OpenClawConfig,
   type ResolvedLineAccount,
-} from "openclaw/plugin-sdk/line";
-import {
-  listLineAccountIds,
-  resolveDefaultLineAccountId,
-  resolveLineAccount,
-} from "openclaw/plugin-sdk/line";
+} from "../api.js";
+import { listLineAccountIds, resolveDefaultLineAccountId, resolveLineAccount } from "../api.js";
 import { lineSetupAdapter } from "./setup-core.js";
 import { lineSetupWizard } from "./setup-surface.js";
 
diff --git a/extensions/line/src/channel.ts b/extensions/line/src/channel.ts
index ee3c9597eab..f2d4b84f8bc 100644
--- a/extensions/line/src/channel.ts
+++ b/extensions/line/src/channel.ts
@@ -18,7 +18,7 @@ import {
   type LineConfig,
   type LineChannelData,
   type ResolvedLineAccount,
-} from "openclaw/plugin-sdk/line";
+} from "../api.js";
 import { getLineRuntime } from "./runtime.js";
 import { lineSetupAdapter } from "./setup-core.js";
 import { lineSetupWizard } from "./setup-surface.js";
diff --git a/extensions/line/src/runtime.ts b/extensions/line/src/runtime.ts
index 65dd4d5394b..3541eed4ed7 100644
--- a/extensions/line/src/runtime.ts
+++ b/extensions/line/src/runtime.ts
@@ -1,5 +1,5 @@
-import type { PluginRuntime } from "openclaw/plugin-sdk/line";
 import { createPluginRuntimeStore } from "openclaw/plugin-sdk/runtime-store";
+import type { PluginRuntime } from "../api.js";
 
 const { setRuntime: setLineRuntime, getRuntime: getLineRuntime } =
   createPluginRuntimeStore<PluginRuntime>("LINE runtime not initialized - plugin not registered");
diff --git a/extensions/line/src/setup-core.ts b/extensions/line/src/setup-core.ts
index 737ba1cc856..3fd00dcdbc3 100644
--- a/extensions/line/src/setup-core.ts
+++ b/extensions/line/src/setup-core.ts
@@ -1,11 +1,11 @@
+import type { ChannelSetupAdapter, OpenClawConfig } from "openclaw/plugin-sdk/setup";
+import { DEFAULT_ACCOUNT_ID } from "openclaw/plugin-sdk/setup";
 import {
   listLineAccountIds,
   normalizeAccountId,
   resolveLineAccount,
   type LineConfig,
-} from "openclaw/plugin-sdk/line";
-import type { ChannelSetupAdapter, OpenClawConfig } from "openclaw/plugin-sdk/setup";
-import { DEFAULT_ACCOUNT_ID } from "openclaw/plugin-sdk/setup";
+} from "../api.js";
 
 const channel = "line" as const;
 
diff --git a/extensions/line/src/setup-surface.ts b/extensions/line/src/setup-surface.ts
index d548b096434..24afb238b6a 100644
--- a/extensions/line/src/setup-surface.ts
+++ b/extensions/line/src/setup-surface.ts
@@ -1,4 +1,3 @@
-import { resolveLineAccount } from "openclaw/plugin-sdk/line";
 import {
   DEFAULT_ACCOUNT_ID,
   formatDocsLink,
@@ -8,6 +7,7 @@ import {
   type ChannelSetupDmPolicy,
   type ChannelSetupWizard,
 } from "openclaw/plugin-sdk/setup";
+import { resolveLineAccount } from "../api.js";
 import {
   isLineConfigured,
   listLineAccountIds,
diff --git a/src/plugin-sdk/channel-import-guardrails.test.ts b/src/plugin-sdk/channel-import-guardrails.test.ts
index 8b7f099ae8a..cb32b5e8b12 100644
--- a/src/plugin-sdk/channel-import-guardrails.test.ts
+++ b/src/plugin-sdk/channel-import-guardrails.test.ts
@@ -121,6 +121,7 @@ const LOCAL_EXTENSION_API_BARREL_GUARDS = [
   "diagnostics-otel",
   "diffs",
   "llm-task",
+  "line",
   "memory-lancedb",
   "synology-chat",
   "talk-voice",