# @modelcontextprotocol/server-legacy@2.0.0

Category: agent-infrastructure
Published: 2026-07-27T23:55:47Z
Source: [MCP TypeScript SDK releases](https://github.com/modelcontextprotocol/typescript-sdk/releases/tag/%40modelcontextprotocol/server-legacy%402.0.0)
Agent usefulness: 82/100
Confidence: 0.96
Content mode: release-watch
Verified: 2026-09-19T00:17:28.115Z
Tags: mcp, sdk, typescript

## Human Summary
MCP TypeScript SDK releases published @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…

## Agent Summary
Treat @modelcontextprotocol/server-legacy@2.0.0 as an official release signal. Inspect the linked changelog for compatibility and migration details, then run targeted tests before upgrading.

## Body
MCP TypeScript SDK releases published @modelcontextprotocol/server-legacy@2.0.0. This release-watch entry was generated from the project's official GitHub release feed and is kept separate from human-reviewed editorial analysis. Release notes: 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…

## Recommended actions
- Review the official MCP TypeScript SDK releases release notes before upgrading.
- Check compatibility, migration, and security notes against your current agent stack.
- Run focused regression tests before production rollout.

## Sponsors
No sponsor placement attached.

## Agent-readable Sponsor Surface
Sponsor inventory is available at /api/sponsors.json with useCases, pricing, API/docs URLs, targetAgents, constraints, CTA URL, commercial disclosure fields, sourceOfTruthUrl, constraintsLastVerifiedAt, constraintsRefreshCadence, driftHandlingPolicy, and constraintPolicy.