# @modelcontextprotocol/server@2.2.0

Category: agent-infrastructure
Published: 2026-09-28T19:07:55Z
Source: [MCP TypeScript SDK releases](https://github.com/modelcontextprotocol/typescript-sdk/releases/tag/%40modelcontextprotocol/server%402.2.0)
Agent usefulness: 77/100
Confidence: 0.96
Content mode: release-watch
Verified: 2026-09-28T22:17:29.331Z
Tags: mcp, sdk, typescript

## Human Summary
MCP TypeScript SDK releases published @modelcontextprotocol/server@2.2.0. Patch Changes - 2885 (https://github.com/modelcontextprotocol/typescript-sdk/pull/2885) 9dd722f (https://github.com/modelcontextprotocol/typescript-sdk/commit/9dd722fd0b533b3cb44cd2834409f7ea4dd32b00) Thanks @claude (https://github.com/apps/claude)! - Sending a notification on a…

## Agent Summary
Treat @modelcontextprotocol/server@2.2.0 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@2.2.0. This automated release-watch entry was generated from the project's official GitHub release feed and is kept separate from human-reviewed editorial analysis. Release notes: Patch Changes - 2885 (https://github.com/modelcontextprotocol/typescript-sdk/pull/2885) 9dd722f (https://github.com/modelcontextprotocol/typescript-sdk/commit/9dd722fd0b533b3cb44cd2834409f7ea4dd32b00) Thanks @claude (https://github.com/apps/claude)! - Sending a notification on a closed connection no longer produces a briefly unhandled promise rejection (seen as unhandledrejection on Cloudflare Workers) in addition to the returned rejection. - 2778 (https://github.com/modelcontextprotocol/typescript-sdk/pull/2778) e3fb9ed (https://github.com/modelcontextprotocol/typescript-sdk/commit/e3fb9edcdec70ed7c8463548ea9b90bbcb74c4ab) Thanks @vjymisal0 (https://github.com/vjymisal0)! - Fix a stack overflow in createMcpHandler when the factory returns the same server instance for more than one request. Returning a fresh instance per request is still required. - 2651…

## 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.