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packages/server-legacy/CHANGELOG.md
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# @modelcontextprotocol/server-legacy
## 2.0.0
### Minor Changes
- [#2477](https://github.com/modelcontextprotocol/typescript-sdk/pull/2477) [`8e1d2e9`](https://github.com/modelcontextprotocol/typescript-sdk/commit/8e1d2e92b1720d2520122b3a5f20ea084edaf3c4) Thanks [@felixweinberger](https://github.com/felixweinberger)! - Move the schema source modules (spec schemas, OAuth schemas, protocol constants) into `@modelcontextprotocol/core` and resolve them from there as a regular runtime dependency instead of bundling a private copy into each package. An application importing more than one of the packages now evaluates a single shared schema graph with shared object identity. `@modelcontextprotocol/core` gains a `./internal` subpath (SDK-internal contract; may change in any release) and the four packages now version together.
### Patch Changes
- [#2402](https://github.com/modelcontextprotocol/typescript-sdk/pull/2402) [`a400259`](https://github.com/modelcontextprotocol/typescript-sdk/commit/a4002596b914c675d17ac22471d1287976dbb52a) Thanks [@felixweinberger](https://github.com/felixweinberger)! - First beta release of SDK v2 with support for the MCP 2026-07-28 specification
revision. See the migration guides for upgrading from v1
(`docs/migration/upgrade-to-v2.md`) and adopting the 2026-07-28 revision
(`docs/migration/support-2026-07-28.md`).
- [#2405](https://github.com/modelcontextprotocol/typescript-sdk/pull/2405) [`f172626`](https://github.com/modelcontextprotocol/typescript-sdk/commit/f172626a8e98b2ae2f0f690e4afb4dc74dbf6011) Thanks [@mattzcarey](https://github.com/mattzcarey)! - Ship CommonJS builds alongside ESM. Each package now emits both `.mjs`/`.d.mts`
and `.cjs`/`.d.cts` (via tsdown `format: ['esm', 'cjs']`), and its `exports` map
adds a `require` condition so `require('@modelcontextprotocol/…')` works from
CommonJS consumers. Output extensions are normalized across all packages
(`@modelcontextprotocol/core` moves from `.js`/`.d.ts` to `.mjs`/`.d.mts`); the
public import paths are unchanged.
- [#2476](https://github.com/modelcontextprotocol/typescript-sdk/pull/2476) [`e0a0ab7`](https://github.com/modelcontextprotocol/typescript-sdk/commit/e0a0ab74d9baed74572c9f435313fb6daef1b989) Thanks [@felixweinberger](https://github.com/felixweinberger)! - Build protocol-revision wire schemas lazily on first validation instead of at import. Each revision's schema set is now constructed by a module-level memoized factory, so importing the client or server package no longer pays the construction cost of both frozen wire-schema graphs up front. Method membership in the revision registries stays static, the schemas themselves are unchanged, and registry lookups keep returning reference-identical schema objects.
- Updated dependencies [[`a400259`](https://github.com/modelcontextprotocol/typescript-sdk/commit/a4002596b914c675d17ac22471d1287976dbb52a), [`44797d7`](https://github.com/modelcontextprotocol/typescript-sdk/commit/44797d77792953d0ce70b68922bb6bb69e697c32), [`f172626`](https://github.com/modelcontextprotocol/typescript-sdk/commit/f172626a8e98b2ae2f0f690e4afb4dc74dbf6011), [`8e1d2e9`](https://github.com/modelcontextprotocol/typescript-sdk/commit/8e1d2e92b1720d2520122b3a5f20ea084edaf3c4), [`f413763`](https://github.com/modelcontextprotocol/typescript-sdk/commit/f4137630c05dc9a4fb14d4d3777f5cb167bd6313)]:
- @modelcontextprotocol/core@2.0.0
## 2.0.0-beta.5
### Patch Changes

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packages/server-legacy/package.json
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{
"name": "@modelcontextprotocol/server-legacy",
"private": false,
"version": "2.0.0-beta.5",
"version": "2.0.0",
"description": "Frozen v1 SSE transport and OAuth Authorization Server helpers for the Model Context Protocol TypeScript SDK. Deprecated; use StreamableHTTP and a dedicated OAuth server in production.",
"deprecated": "This package is a frozen copy of v1's SSE transport and OAuth Authorization Server helpers for migration purposes only. Use StreamableHTTP from @modelcontextprotocol/server and a dedicated OAuth server in production. Will not receive new features.",
"license": "MIT",