diff --git a/package.json b/package.json
index 2e529c8032b..1ecf252da04 100644
--- a/package.json
+++ b/package.json
@@ -241,6 +241,10 @@
       "types": "./dist/plugin-sdk/imessage.d.ts",
       "default": "./dist/plugin-sdk/imessage.js"
     },
+    "./plugin-sdk/imessage-core": {
+      "types": "./dist/plugin-sdk/imessage-core.d.ts",
+      "default": "./dist/plugin-sdk/imessage-core.js"
+    },
     "./plugin-sdk/open-prose": {
       "types": "./dist/plugin-sdk/open-prose.d.ts",
       "default": "./dist/plugin-sdk/open-prose.js"
@@ -538,7 +542,7 @@
     "build:plugin-sdk:dts": "tsc -p tsconfig.plugin-sdk.dts.json",
     "build:strict-smoke": "pnpm canvas:a2ui:bundle && node scripts/tsdown-build.mjs && node scripts/runtime-postbuild.mjs && pnpm build:plugin-sdk:dts",
     "canvas:a2ui:bundle": "bash scripts/bundle-a2ui.sh",
-    "check": "pnpm check:host-env-policy:swift && pnpm check:bundled-provider-auth-env-vars && pnpm format:check && pnpm tsgo && pnpm plugin-sdk:check-exports && pnpm lint && pnpm lint:tmp:no-random-messaging && pnpm lint:tmp:channel-agnostic-boundaries && pnpm lint:tmp:no-raw-channel-fetch && pnpm lint:agent:ingress-owner && pnpm lint:plugins:no-register-http-handler && pnpm lint:plugins:no-monolithic-plugin-sdk-entry-imports && pnpm lint:plugins:no-extension-src-imports && pnpm lint:plugins:no-extension-test-core-imports && pnpm lint:plugins:no-extension-imports && pnpm lint:extensions:no-src-outside-plugin-sdk && pnpm lint:extensions:no-plugin-sdk-internal && pnpm lint:extensions:no-relative-outside-package && pnpm lint:web-search-provider-boundaries && pnpm lint:webhook:no-low-level-body-read && pnpm lint:auth:no-pairing-store-group && pnpm lint:auth:pairing-account-scope",
+    "check": "pnpm check:host-env-policy:swift && pnpm check:bundled-provider-auth-env-vars && pnpm format:check && pnpm tsgo && pnpm plugin-sdk:check-exports && pnpm lint && pnpm lint:tmp:no-random-messaging && pnpm lint:tmp:channel-agnostic-boundaries && pnpm lint:tmp:no-raw-channel-fetch && pnpm lint:agent:ingress-owner && pnpm lint:plugins:no-register-http-handler && pnpm lint:plugins:no-monolithic-plugin-sdk-entry-imports && pnpm lint:plugins:no-extension-src-imports && pnpm lint:plugins:no-extension-test-core-imports && pnpm lint:plugins:no-extension-imports && pnpm lint:plugins:plugin-sdk-subpaths-exported && pnpm lint:extensions:no-src-outside-plugin-sdk && pnpm lint:extensions:no-plugin-sdk-internal && pnpm lint:extensions:no-relative-outside-package && pnpm lint:web-search-provider-boundaries && pnpm lint:webhook:no-low-level-body-read && pnpm lint:auth:no-pairing-store-group && pnpm lint:auth:pairing-account-scope",
     "check:bundled-provider-auth-env-vars": "node scripts/generate-bundled-provider-auth-env-vars.mjs --check",
     "check:docs": "pnpm format:docs:check && pnpm lint:docs && pnpm docs:check-i18n-glossary && pnpm docs:check-links",
     "check:host-env-policy:swift": "node scripts/generate-host-env-security-policy-swift.mjs --check",
@@ -599,6 +603,7 @@
     "lint:plugins:no-extension-test-core-imports": "node --import tsx scripts/check-no-extension-test-core-imports.ts",
     "lint:plugins:no-monolithic-plugin-sdk-entry-imports": "node --import tsx scripts/check-no-monolithic-plugin-sdk-entry-imports.ts",
     "lint:plugins:no-register-http-handler": "node scripts/check-no-register-http-handler.mjs",
+    "lint:plugins:plugin-sdk-subpaths-exported": "node scripts/check-plugin-sdk-subpath-exports.mjs",
     "lint:swift": "swiftlint lint --config .swiftlint.yml && (cd apps/ios && swiftlint lint --config .swiftlint.yml)",
     "lint:tmp:channel-agnostic-boundaries": "node scripts/check-channel-agnostic-boundaries.mjs",
     "lint:tmp:no-random-messaging": "node scripts/check-no-random-messaging-tmp.mjs",
diff --git a/scripts/check-plugin-sdk-subpath-exports.mjs b/scripts/check-plugin-sdk-subpath-exports.mjs
new file mode 100644
index 00000000000..07094e18a3b
--- /dev/null
+++ b/scripts/check-plugin-sdk-subpath-exports.mjs
@@ -0,0 +1,146 @@
+#!/usr/bin/env node
+
+import { readFileSync } from "node:fs";
+import path from "node:path";
+import { fileURLToPath } from "node:url";
+import ts from "typescript";
+import {
+  collectTypeScriptFilesFromRoots,
+  resolveSourceRoots,
+  toLine,
+} from "./lib/ts-guard-utils.mjs";
+
+const repoRoot = path.resolve(path.dirname(fileURLToPath(import.meta.url)), "..");
+const scanRoots = resolveSourceRoots(repoRoot, ["src", "extensions", "scripts", "test"]);
+
+function readPackageExports() {
+  const packageJson = JSON.parse(readFileSync(path.join(repoRoot, "package.json"), "utf8"));
+  return new Set(
+    Object.keys(packageJson.exports ?? {})
+      .filter((key) => key.startsWith("./plugin-sdk/"))
+      .map((key) => key.slice("./plugin-sdk/".length)),
+  );
+}
+
+function readEntrypoints() {
+  const entrypoints = JSON.parse(
+    readFileSync(path.join(repoRoot, "scripts/lib/plugin-sdk-entrypoints.json"), "utf8"),
+  );
+  return new Set(entrypoints.filter((entry) => entry !== "index"));
+}
+
+function normalizePath(filePath) {
+  return path.relative(repoRoot, filePath).split(path.sep).join("/");
+}
+
+function parsePluginSdkSubpath(specifier) {
+  if (!specifier.startsWith("openclaw/plugin-sdk/")) {
+    return null;
+  }
+  const subpath = specifier.slice("openclaw/plugin-sdk/".length);
+  return subpath || null;
+}
+
+function compareEntries(left, right) {
+  return (
+    left.file.localeCompare(right.file) ||
+    left.line - right.line ||
+    left.kind.localeCompare(right.kind) ||
+    left.specifier.localeCompare(right.specifier) ||
+    left.subpath.localeCompare(right.subpath)
+  );
+}
+
+async function collectViolations() {
+  const entrypoints = readEntrypoints();
+  const exports = readPackageExports();
+  const files = (await collectTypeScriptFilesFromRoots(scanRoots, { includeTests: true })).toSorted(
+    (left, right) => normalizePath(left).localeCompare(normalizePath(right)),
+  );
+  const violations = [];
+
+  for (const filePath of files) {
+    const sourceText = readFileSync(filePath, "utf8");
+    const sourceFile = ts.createSourceFile(
+      filePath,
+      sourceText,
+      ts.ScriptTarget.Latest,
+      true,
+      filePath.endsWith(".tsx") ? ts.ScriptKind.TSX : ts.ScriptKind.TS,
+    );
+
+    function push(kind, specifierNode, specifier) {
+      const subpath = parsePluginSdkSubpath(specifier);
+      if (!subpath) {
+        return;
+      }
+
+      const missingFrom = [];
+      if (!entrypoints.has(subpath)) {
+        missingFrom.push("scripts/lib/plugin-sdk-entrypoints.json");
+      }
+      if (!exports.has(subpath)) {
+        missingFrom.push("package.json exports");
+      }
+      if (missingFrom.length === 0) {
+        return;
+      }
+
+      violations.push({
+        file: normalizePath(filePath),
+        line: toLine(sourceFile, specifierNode),
+        kind,
+        specifier,
+        subpath,
+        missingFrom,
+      });
+    }
+
+    function visit(node) {
+      if (ts.isImportDeclaration(node) && ts.isStringLiteral(node.moduleSpecifier)) {
+        push("import", node.moduleSpecifier, node.moduleSpecifier.text);
+      } else if (
+        ts.isExportDeclaration(node) &&
+        node.moduleSpecifier &&
+        ts.isStringLiteral(node.moduleSpecifier)
+      ) {
+        push("export", node.moduleSpecifier, node.moduleSpecifier.text);
+      } else if (
+        ts.isCallExpression(node) &&
+        node.expression.kind === ts.SyntaxKind.ImportKeyword &&
+        node.arguments.length === 1 &&
+        ts.isStringLiteral(node.arguments[0])
+      ) {
+        push("dynamic-import", node.arguments[0], node.arguments[0].text);
+      }
+      ts.forEachChild(node, visit);
+    }
+
+    visit(sourceFile);
+  }
+
+  return violations.toSorted(compareEntries);
+}
+
+async function main() {
+  const violations = await collectViolations();
+  if (violations.length === 0) {
+    console.log("OK: all referenced openclaw/plugin-sdk/<subpath> imports are exported.");
+    return;
+  }
+
+  console.error(
+    "Rule: every referenced openclaw/plugin-sdk/<subpath> must exist in the public package exports.",
+  );
+  for (const violation of violations) {
+    console.error(
+      `- ${violation.file}:${violation.line} [${violation.kind}] ${violation.specifier} missing from ${violation.missingFrom.join(" and ")}`,
+    );
+  }
+  process.exit(1);
+}
+
+main().catch((error) => {
+  console.error(error);
+  process.exit(1);
+});
diff --git a/scripts/lib/plugin-sdk-entrypoints.json b/scripts/lib/plugin-sdk-entrypoints.json
index 97658712de2..da2395758c5 100644
--- a/scripts/lib/plugin-sdk-entrypoints.json
+++ b/scripts/lib/plugin-sdk-entrypoints.json
@@ -50,6 +50,7 @@
   "slack",
   "slack-core",
   "imessage",
+  "imessage-core",
   "open-prose",
   "phone-control",
   "qwen-portal-auth",