diff --git a/packages/core/BUILD.bazel b/packages/core/BUILD.bazel
index 8079532b867..02dbb374caa 100644
--- a/packages/core/BUILD.bazel
+++ b/packages/core/BUILD.bazel
@@ -1,9 +1,12 @@
+load("@npm//:defs.bzl", "npm_link_all_packages")
 load("//adev/shared-docs/pipeline/api-gen:generate_api_docs.bzl", "generate_api_docs")
 load("//packages/common/locales:index.bzl", "generate_base_locale_file")
 load("//tools:defaults.bzl", "api_golden_test", "api_golden_test_npm_package", "ng_package", "ng_project", "ts_config", "tsec_test")
 
 package(default_visibility = ["//visibility:public"])
 
+npm_link_all_packages(name = "node_modules")
+
 # This generates the `src/i18n/locale_en.ts` file through the `generate-locales` tool. Since
 # the base locale file is checked-in for Google3, it is additionally stored in a golden location.
 generate_base_locale_file(
@@ -61,10 +64,20 @@ ng_package(
         ":event_dispatch_contract_binary",
         "//packages/core/resources",
     ],
+    externals = [
+        # Don't bundle vendored `@mcp-b/webmcp-types` dependency.
+        "../third_party/@mcp-b/webmcp-types",
+        "../../third_party/@mcp-b/webmcp-types",
+    ],
     nested_packages = [
         "//packages/core/schematics:npm_package",
+        "//packages/core/third_party/@mcp-b/webmcp-types",
     ],
     package = "@angular/core",
+    substitutions = {
+        # Link `@mcp-b/webmcp-types` to the vendored package.
+        "\\./third_party/@mcp-b/webmcp-types": "../third_party/@mcp-b/webmcp-types/index.js",
+    },
     tags = [
         "release-with-framework",
     ],
diff --git a/packages/core/package.json b/packages/core/package.json
index 11e452904a9..89f99044469 100644
--- a/packages/core/package.json
+++ b/packages/core/package.json
@@ -18,6 +18,9 @@
   "dependencies": {
     "tslib": "^2.3.0"
   },
+  "devDependencies": {
+    "@mcp-b/webmcp-types": "^2.2.0"
+  },
   "peerDependencies": {
     "@angular/compiler": "0.0.0-PLACEHOLDER",
     "rxjs": "^6.5.3 || ^7.4.0",
diff --git a/packages/core/third_party/@mcp-b/webmcp-types/BUILD.bazel b/packages/core/third_party/@mcp-b/webmcp-types/BUILD.bazel
new file mode 100644
index 00000000000..fb796453155
--- /dev/null
+++ b/packages/core/third_party/@mcp-b/webmcp-types/BUILD.bazel
@@ -0,0 +1,27 @@
+load("//tools:defaults.bzl", "js_library")
+
+genrule(
+    name = "sources",
+    srcs = ["//packages/core:node_modules/@mcp-b/webmcp-types/dir"],
+    outs = [
+        "dist/common.d.ts",
+        "dist/json-schema.d.ts",
+        "LICENSE",
+    ],
+    cmd = """
+        readonly SRC_DIR="$(location //packages/core:node_modules/@mcp-b/webmcp-types/dir)"
+        mkdir -p "$$(dirname "$(location dist/common.d.ts)")"
+        cp "$${SRC_DIR}/dist/common.d.ts" "$(location dist/common.d.ts)"
+        cp "$${SRC_DIR}/dist/json-schema.d.ts" "$(location dist/json-schema.d.ts)"
+        cp "$${SRC_DIR}/LICENSE" "$(location LICENSE)"
+    """,
+)
+
+js_library(
+    name = "webmcp-types",
+    srcs = [
+        "index.d.ts",
+        ":sources",
+    ],
+    visibility = ["//packages/core:__subpackages__"],
+)
diff --git a/packages/core/third_party/@mcp-b/webmcp-types/README.md b/packages/core/third_party/@mcp-b/webmcp-types/README.md
new file mode 100644
index 00000000000..fb36d098e83
--- /dev/null
+++ b/packages/core/third_party/@mcp-b/webmcp-types/README.md
@@ -0,0 +1,4 @@
+# WebMCP Types
+
+This directory contains types vendored from `@mcp-b/webmcp-types` to
+address API extractor issues.
diff --git a/packages/core/third_party/@mcp-b/webmcp-types/index.d.ts b/packages/core/third_party/@mcp-b/webmcp-types/index.d.ts
new file mode 100644
index 00000000000..e06dd8cf606
--- /dev/null
+++ b/packages/core/third_party/@mcp-b/webmcp-types/index.d.ts
@@ -0,0 +1,9 @@
+/**
+ * @license
+ * Copyright Google LLC All Rights Reserved.
+ *
+ * Use of this source code is governed by an MIT-style license that can be
+ * found in the LICENSE file at https://angular.dev/license
+ */
+
+export {InferArgsFromInputSchema, JsonSchemaForInference} from './dist/json-schema.js';
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 27d52449b48..770b370d6e8 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -1004,6 +1004,10 @@ importers:
       zone.js:
         specifier: ~0.15.0 || ~0.16.0
         version: 0.16.1
+    devDependencies:
+      '@mcp-b/webmcp-types':
+        specifier: ^2.2.0
+        version: 2.2.0
 
   packages/core/test/bundling:
     dependencies:
@@ -3831,6 +3835,9 @@ packages:
   '@marijn/find-cluster-break@1.0.2':
     resolution: {integrity: sha512-l0h88YhZFyKdXIFNfSWpyjStDjGHwZ/U7iobcK1cQQD8sejsONdQtTVU+1wVN1PBw40PiiHB1vA5S7VTfQiP9g==}
 
+  '@mcp-b/webmcp-types@2.2.0':
+    resolution: {integrity: sha512-1/UYAwQKBkqRgK18GkbGR4m6Cn9vz6Qy6pTL5LIIinUOhR5dMLaNl/blH/tJT+nJleMmgDoFZWGAmmr+fAz2PQ==}
+
   '@mermaid-js/parser@1.1.0':
     resolution: {integrity: sha512-gxK9ZX2+Fex5zu8LhRQoMeMPEHbc73UKZ0FQ54YrQtUxE1VVhMwzeNtKRPAu5aXks4FasbMe4xB4bWrmq6Jlxw==}
 
@@ -15828,6 +15835,8 @@ snapshots:
 
   '@marijn/find-cluster-break@1.0.2': {}
 
+  '@mcp-b/webmcp-types@2.2.0': {}
+
   '@mermaid-js/parser@1.1.0':
     dependencies:
       langium: 4.2.3