diff --git a/package.json b/package.json
index 791e113d85e..4d1a1803801 100644
--- a/package.json
+++ b/package.json
@@ -1424,6 +1424,7 @@
     "lint:extensions:bundled": "node scripts/run-bundled-extension-oxlint.mjs",
     "lint:extensions:channels": "node scripts/run-extension-channel-oxlint.mjs",
     "lint:extensions:no-plugin-sdk-internal": "node scripts/check-extension-plugin-sdk-boundary.mjs --mode=plugin-sdk-internal",
+    "lint:extensions:no-plugin-sdk-wildcard-reexports": "node scripts/check-plugin-sdk-wildcard-reexports.mjs",
     "lint:extensions:no-relative-outside-package": "node scripts/check-extension-plugin-sdk-boundary.mjs --mode=relative-outside-package",
     "lint:extensions:no-src-outside-plugin-sdk": "node scripts/check-extension-plugin-sdk-boundary.mjs --mode=src-outside-plugin-sdk",
     "lint:fix": "node scripts/run-oxlint.mjs --fix && pnpm format",
diff --git a/scripts/check-changed.mjs b/scripts/check-changed.mjs
index 5f98b35fd08..158893f7efa 100644
--- a/scripts/check-changed.mjs
+++ b/scripts/check-changed.mjs
@@ -55,6 +55,7 @@ export function createChangedCheckPlan(result, options = {}) {
 
   add("conflict markers", ["check:no-conflict-markers"]);
   add("changelog attributions", ["check:changelog-attributions"]);
+  add("plugin-sdk wildcard re-exports", ["lint:extensions:no-plugin-sdk-wildcard-reexports"]);
 
   if (result.docsOnly) {
     return {
diff --git a/scripts/check-plugin-sdk-wildcard-reexports.mjs b/scripts/check-plugin-sdk-wildcard-reexports.mjs
new file mode 100644
index 00000000000..fa48fadaf79
--- /dev/null
+++ b/scripts/check-plugin-sdk-wildcard-reexports.mjs
@@ -0,0 +1,85 @@
+#!/usr/bin/env node
+
+import fs from "node:fs/promises";
+import path from "node:path";
+import { fileURLToPath } from "node:url";
+
+const repoRoot = path.resolve(path.dirname(fileURLToPath(import.meta.url)), "..");
+const extensionsRoot = path.join(repoRoot, "extensions");
+
+const WILDCARD_PLUGIN_SDK_REEXPORT_PATTERN =
+  /^\s*export\s+(?:type\s+)?\*\s+from\s+["']openclaw\/plugin-sdk\//u;
+
+async function listExtensionApiFiles(rootDir = extensionsRoot) {
+  const entries = await fs.readdir(rootDir, { withFileTypes: true });
+  const files = [];
+  for (const entry of entries) {
+    if (!entry.isDirectory()) {
+      continue;
+    }
+    for (const fileName of ["api.ts", "runtime-api.ts"]) {
+      const filePath = path.join(rootDir, entry.name, fileName);
+      try {
+        const stat = await fs.stat(filePath);
+        if (stat.isFile()) {
+          files.push(filePath);
+        }
+      } catch (error) {
+        if (!error || typeof error !== "object" || !("code" in error) || error.code !== "ENOENT") {
+          throw error;
+        }
+      }
+    }
+  }
+  return files.toSorted((left, right) => left.localeCompare(right));
+}
+
+export function findPluginSdkWildcardReexports(source) {
+  return source
+    .split(/\r?\n/u)
+    .map((text, index) => ({ line: index + 1, text }))
+    .filter(({ text }) => WILDCARD_PLUGIN_SDK_REEXPORT_PATTERN.test(text));
+}
+
+export async function collectPluginSdkWildcardReexports(rootDir = repoRoot) {
+  const files = await listExtensionApiFiles(path.join(rootDir, "extensions"));
+  const violations = [];
+  for (const filePath of files) {
+    const source = await fs.readFile(filePath, "utf8");
+    for (const match of findPluginSdkWildcardReexports(source)) {
+      violations.push({
+        file: path.relative(rootDir, filePath).split(path.sep).join("/"),
+        line: match.line,
+        text: match.text.trim(),
+      });
+    }
+  }
+  return violations;
+}
+
+export async function main(argv = process.argv.slice(2), io = process) {
+  const json = argv.includes("--json");
+  const violations = await collectPluginSdkWildcardReexports();
+
+  if (json) {
+    io.stdout.write(`${JSON.stringify(violations, null, 2)}\n`);
+    return violations.length === 0 ? 0 : 1;
+  }
+
+  if (violations.length === 0) {
+    io.stdout.write("No plugin-sdk wildcard re-exports found in extension API barrels.\n");
+    return 0;
+  }
+
+  io.stderr.write("Found plugin-sdk wildcard re-exports in extension API barrels:\n");
+  for (const violation of violations) {
+    io.stderr.write(`- ${violation.file}:${violation.line} ${violation.text}\n`);
+  }
+  io.stderr.write("Use explicit named exports from the narrow SDK subpath instead.\n");
+  return 1;
+}
+
+if (process.argv[1] && path.resolve(process.argv[1]) === fileURLToPath(import.meta.url)) {
+  const exitCode = await main();
+  process.exit(exitCode);
+}
diff --git a/scripts/check.mjs b/scripts/check.mjs
index ccab6e4f411..6bb4f4aafa0 100644
--- a/scripts/check.mjs
+++ b/scripts/check.mjs
@@ -31,6 +31,10 @@ export async function main(argv = process.argv.slice(2)) {
       commands: [
         { name: "conflict markers", args: ["check:no-conflict-markers"] },
         { name: "changelog attributions", args: ["check:changelog-attributions"] },
+        {
+          name: "plugin-sdk wildcard re-exports",
+          args: ["lint:extensions:no-plugin-sdk-wildcard-reexports"],
+        },
         { name: "tool display", args: ["tool-display:check"] },
         { name: "host env policy", args: ["check:host-env-policy:swift"] },
       ],
diff --git a/test/scripts/changed-lanes.test.ts b/test/scripts/changed-lanes.test.ts
index f50e04ab415..fc153b34e05 100644
--- a/test/scripts/changed-lanes.test.ts
+++ b/test/scripts/changed-lanes.test.ts
@@ -259,6 +259,7 @@ describe("scripts/changed-lanes", () => {
     expect(plan.commands.map((command) => command.name)).toEqual([
       "conflict markers",
       "changelog attributions",
+      "plugin-sdk wildcard re-exports",
       "typecheck core tests",
       "lint core",
       "lint scripts",
@@ -546,6 +547,7 @@ describe("scripts/changed-lanes", () => {
     expect(plan.commands.map((command) => command.args[0])).toEqual([
       "check:no-conflict-markers",
       "check:changelog-attributions",
+      "lint:extensions:no-plugin-sdk-wildcard-reexports",
       "release-metadata:check",
       "ios:version:check",
       "config:schema:check",
@@ -677,6 +679,10 @@ describe("scripts/changed-lanes", () => {
     expect(plan.commands).toEqual([
       { name: "conflict markers", args: ["check:no-conflict-markers"] },
       { name: "changelog attributions", args: ["check:changelog-attributions"] },
+      {
+        name: "plugin-sdk wildcard re-exports",
+        args: ["lint:extensions:no-plugin-sdk-wildcard-reexports"],
+      },
     ]);
   });
 
@@ -688,6 +694,10 @@ describe("scripts/changed-lanes", () => {
     expect(plan.commands).toEqual([
       { name: "conflict markers", args: ["check:no-conflict-markers"] },
       { name: "changelog attributions", args: ["check:changelog-attributions"] },
+      {
+        name: "plugin-sdk wildcard re-exports",
+        args: ["lint:extensions:no-plugin-sdk-wildcard-reexports"],
+      },
     ]);
   });
 });
diff --git a/test/scripts/check-plugin-sdk-wildcard-reexports.test.ts b/test/scripts/check-plugin-sdk-wildcard-reexports.test.ts
new file mode 100644
index 00000000000..635a9ce1dc7
--- /dev/null
+++ b/test/scripts/check-plugin-sdk-wildcard-reexports.test.ts
@@ -0,0 +1,31 @@
+import { describe, expect, it } from "vitest";
+import { findPluginSdkWildcardReexports } from "../../scripts/check-plugin-sdk-wildcard-reexports.mjs";
+
+describe("check-plugin-sdk-wildcard-reexports", () => {
+  it("flags wildcard re-exports from plugin-sdk subpaths", () => {
+    expect(
+      findPluginSdkWildcardReexports(
+        [
+          'export * from "openclaw/plugin-sdk/foo";',
+          'export type * from "openclaw/plugin-sdk/bar";',
+          'export { named } from "openclaw/plugin-sdk/foo";',
+        ].join("\n"),
+      ),
+    ).toEqual([
+      { line: 1, text: 'export * from "openclaw/plugin-sdk/foo";' },
+      { line: 2, text: 'export type * from "openclaw/plugin-sdk/bar";' },
+    ]);
+  });
+
+  it("allows explicit SDK exports and local wildcard barrels", () => {
+    expect(
+      findPluginSdkWildcardReexports(
+        [
+          'export { named } from "openclaw/plugin-sdk/foo";',
+          'export type { Named } from "openclaw/plugin-sdk/foo";',
+          'export * from "./src/runtime-api.js";',
+        ].join("\n"),
+      ),
+    ).toEqual([]);
+  });
+});