Version Packages (alpha)

[github-actions]

This PR was opened by the Changesets release GitHub action. When you're ready to do a release, you can merge this and publish to npm yourself or setup this action to publish automatically. If you're not ready to do a release yet, that's fine, whenever you add more changesets to main, this PR will be updated.

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main is currently in pre mode so this branch has prereleases rather than normal releases. If you want to exit prereleases, run changeset pre exit on main.

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Releases

The changelog information of each package has been omitted from this message, as the content exceeds the size limit.

@modelcontextprotocol/client@2.0.0-alpha.3

@modelcontextprotocol/server@2.0.0-alpha.3

@modelcontextprotocol/codemod@2.0.0-alpha.1

@modelcontextprotocol/core@2.0.0-alpha.1

@modelcontextprotocol/express@2.0.0-alpha.3

@modelcontextprotocol/server-legacy@2.0.0-alpha.3

@modelcontextprotocol/fastify@2.0.0-alpha.3

@modelcontextprotocol/hono@2.0.0-alpha.3

@modelcontextprotocol/node@2.0.0-alpha.3

@modelcontextprotocol/core-internal@2.0.0-alpha.2

@modelcontextprotocol/test-conformance@2.0.0-alpha.1

@modelcontextprotocol/test-e2e@2.0.0-alpha.1

[claude]

LGTM — routine automated version bump from the Changesets action.

Extended reasoning...

Overview

This PR touches three files: .changeset/pre.json (adds the zod-json-schema-compat changeset entry), packages/core/CHANGELOG.md (adds the 2.0.0-alpha.2 release section), and packages/core/package.json (bumps the version from 2.0.0-alpha.1 to 2.0.0-alpha.2). All changes are auto-generated by the Changesets release action.

Security risks

None. These are purely metadata/versioning files with no executable logic.

Level of scrutiny

Minimal scrutiny required. Auto-generated version bump PRs from the Changesets bot are among the simplest, most mechanical changes in a repo — the content is derived deterministically from merged changesets.

Other factors

No bugs were found by the bug hunting system, no prior review comments are outstanding, and the diff is a textbook Changesets alpha pre-release bump. Safe to approve.

[claude]

LGTM — standard auto-generated Changesets release PR with only version bumps and CHANGELOG additions.

Extended reasoning...

Overview

This is an automated "Version Packages (alpha)" PR generated by the Changesets release action. It touches five files: .changeset/pre.json (adds two new changeset IDs), packages/client/CHANGELOG.md and packages/core/CHANGELOG.md (CHANGELOG entries), and packages/client/package.json / packages/core/package.json (version bumps only — 2.0.0-alpha.2 → 2.0.0-alpha.3 for client, 2.0.0-alpha.1 → 2.0.0-alpha.2 for core). No production logic is changed.

Security risks

None. The diff contains no code — only version strings, CHANGELOG prose, and changeset bookkeeping. No auth, crypto, or permissions paths are touched.

Level of scrutiny

Minimal scrutiny warranted. Automated release PRs of this kind are fully deterministic outputs of changeset version; the actual code changes they describe landed in earlier commits and were reviewed there.

Other factors

Two inline bug comments are attached. The first is a nit about CHANGELOG wording inverting the Accept header ordering described in PR #1655 — doc-only, no functional impact. The second is a pre-existing inconsistency in packages/core/package.json (zod listed in both dependencies and peerDependencies) that was not introduced by this PR and has no npm consumer impact since core is private: true. Neither issue warrants blocking this release PR.

[pkg-pr-new]

Open in StackBlitz

@modelcontextprotocol/client

npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/client@1845

@modelcontextprotocol/codemod

npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/codemod@1845

@modelcontextprotocol/core

npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/core@1845

@modelcontextprotocol/server

npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/server@1845

@modelcontextprotocol/server-legacy

npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/server-legacy@1845

@modelcontextprotocol/express

npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/express@1845

@modelcontextprotocol/fastify

npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/fastify@1845

@modelcontextprotocol/hono

npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/hono@1845

@modelcontextprotocol/node

npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/node@1845

commit: a9f8e03