# @modelcontextprotocol/server@2.4.0

Category: agent-infrastructure
Published: 2026-10-23T18:19:14Z
Source: [MCP TypeScript SDK releases](https://github.com/modelcontextprotocol/typescript-sdk/releases/tag/%40modelcontextprotocol%2Fserver%402.4.0)
Agent usefulness: 72/100
Confidence: 0.96
Content mode: release-watch
Verified: 2026-10-23T22:17:55.053Z
Tags: mcp, sdk, typescript

## Human Summary
MCP TypeScript SDK releases published @modelcontextprotocol/server@2.4.0. Minor Changes 3057 c05225a Thanks @steipete ! - ServerEvent takes optional params , which the subscriptions/listen router delivers with its own subscription ID, so a gateway can forward change notifications with their meta and extension params. 3047 46d9c99 Thanks @KKonstantinov ,…

## Agent Summary
Treat @modelcontextprotocol/server@2.4.0 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@2.4.0. 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: Minor Changes 3057 c05225a Thanks @steipete ! - ServerEvent takes optional params , which the subscriptions/listen router delivers with its own subscription ID, so a gateway can forward change notifications with their meta and extension params. 3047 46d9c99 Thanks @KKonstantinov , @tobi-oye , @mattzcarey ! - Add the Skills extension (SEP-2640), reachable through new ext/skills subpaths; package root exports are unchanged. @modelcontextprotocol/server/ext/skills : SkillsExtension ( attach(server) serves skills/list , skills/get , resources/directory/read and a skill://{+path} resource template), SkillsExtension.load(files) returning a SkillCatalog with entries and reload() , the SkillFiles storage adapter with memorySkillFiles , SkillSource for generated catalogs, skillEntry , and SkillCatalogError . Invalid skills are skipped with a warning ( onWarning ), or fail under strict . A file…

## 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.