Version Packages (beta) (#2471)

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

packages/middleware/node/CHANGELOG.md

@@ -1,5 +1,31 @@
 # @modelcontextprotocol/node
 
+## 2.0.0-beta.3
+
+### Patch Changes
+
+- [#2441](https://github.com/modelcontextprotocol/typescript-sdk/pull/2441) [`561c6d8`](https://github.com/modelcontextprotocol/typescript-sdk/commit/561c6d83456ef98d6c713bbda9837e64337f22c9) Thanks [@felixweinberger](https://github.com/felixweinberger)! - POSTs whose `Content-Type` media type is not `application/json` are now
+  rejected with `415 Unsupported Media Type`; the header is parsed instead of
+  substring-matched. Previously any value merely containing the substring
+  passed the check (for example `text/plain; a=application/json`), case
+  variants were wrongly rejected, and the 2026-07-28 entry did not inspect
+  `Content-Type` at all — requests with a missing or non-JSON header that used
+  to be served on that path now also answer 415. Values with parameters
+  (`application/json; charset=utf-8`, including malformed parameter sections
+  like `application/json;`) continue to work. SDK clients always send the
+  correct header and are unaffected.
+
+    The new `isJsonContentType(header)` helper is exported for transport and
+    framework-adapter authors — custom entries composing the exported building
+    blocks (`classifyInboundRequest`, `PerRequestHTTPServerTransport`) must apply
+    it themselves. The hono adapter's JSON body pre-parse and the client's
+    response dispatch now use the same parsed-media-type comparison.
+
+- [#2445](https://github.com/modelcontextprotocol/typescript-sdk/pull/2445) [`78fabea`](https://github.com/modelcontextprotocol/typescript-sdk/commit/78fabea44557bd49f5a050b92e57ccd22dab14ad) Thanks [@felixweinberger](https://github.com/felixweinberger)! - Document composing the host and origin validation guards in front of `toNodeHandler` for hand-wired `node:http` servers, matching the protected wiring the examples and serving guide now demonstrate.
+
+- Updated dependencies [[`44797d7`](https://github.com/modelcontextprotocol/typescript-sdk/commit/44797d77792953d0ce70b68922bb6bb69e697c32), [`1b90c96`](https://github.com/modelcontextprotocol/typescript-sdk/commit/1b90c96d11fd17016d2977cae9dd661de3fb84df), [`561c6d8`](https://github.com/modelcontextprotocol/typescript-sdk/commit/561c6d83456ef98d6c713bbda9837e64337f22c9), [`ce2f65d`](https://github.com/modelcontextprotocol/typescript-sdk/commit/ce2f65db0e019506f4d2526466ec8cc7106de98e), [`7e69735`](https://github.com/modelcontextprotocol/typescript-sdk/commit/7e697354de95111ca2c70a12ac9f5d3ec96b56c3), [`e8de519`](https://github.com/modelcontextprotocol/typescript-sdk/commit/e8de519d3129f46b7528d2999b7641f55be1f091), [`0ab5d14`](https://github.com/modelcontextprotocol/typescript-sdk/commit/0ab5d1471d6c7375878316df2930fca77eee1d2a), [`24be404`](https://github.com/modelcontextprotocol/typescript-sdk/commit/24be4040d454a9c5983901229068477c7a9ea796), [`7635115`](https://github.com/modelcontextprotocol/typescript-sdk/commit/7635115d0112c3f980b45a9773a4770660af8aae), [`61866d7`](https://github.com/modelcontextprotocol/typescript-sdk/commit/61866d7a5ff4475663ceb525c88447c497c1b92a)]:
+    - @modelcontextprotocol/server@2.0.0-beta.3
+
 ## 2.0.0-beta.2
 
 ### Patch Changes

packages/middleware/node/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@modelcontextprotocol/node",
-    "version": "2.0.0-beta.2",
+    "version": "2.0.0-beta.3",
     "description": "Model Context Protocol implementation for TypeScript - Node.js middleware",
     "license": "MIT",
     "author": "Anthropic, PBC (https://anthropic.com)",