# modelcontextprotocol/typescript-sdk · RepoSense Release & Migration Intelligence

> fix: add explicit | undefined to Transport optional proper. Drop-in upgrade. Migration: None.

## Metadata
- **Repository URL**: https://github.com/modelcontextprotocol/typescript-sdk
- **Primary Package**: `@modelcontextprotocol/sdk` (NPM)
- **Categories**: `AI-AGENT`, `AI-SDK`, `BACKEND`
- **Latest Version**: `v1.32.2`
- **Semantic Status**: `COMPATIBLE`
- **Bundle Size Impact (unavailable)**: `Size Unavailable`
- **Atom Ingestion Feed**: https://github.com/modelcontextprotocol/typescript-sdk/releases.atom

## The Human Context (Plain-English Pitch)
The MCP TypeScript SDK is the official library for building servers and clients that speak the Model Context Protocol. It solves the problem of connecting AI models to real-world tools and data sources through a single, open standard.

## Stage 1 Executive Summary ([Core Change] + [Required Action] + [Migration Effort])
fix: add explicit | undefined to Transport optional proper. Drop-in upgrade. Migration: None.

## Breaking Changes & Required Actions
- fix: add explicit | undefined to Transport optional properties (v1.x backport of #1766) by @kishormorol in #2814
- [v1.x] fix: allow registering after connect() when the capability was declared by @claude[bot] in #2958
- chore: bump version to 1.32.2 by @claude[bot] in #3089
- @kishormorol made their first contribution in #2814

## Migration Snippet
```ts
npm install @modelcontextprotocol/sdk@1.32.2
```

## Ecosystem Compatibility Matrix & Graph Warnings
- **TypeScript 5.x** [`COMPATIBLE`]: Ships standard TypeScript declaration files without type regressions.

## Zero-Noise Release Timeline
- **v1.32.2** (2026-10-23) [COMPATIBLE]: fix: add explicit | undefined to Transport optional proper. Drop-in upgrade. Migration: None.

## Upgrade & Migration Q&A (GEO Direct Answers)
### Is modelcontextprotocol/typescript-sdk v1.32.2 safe to upgrade in production?
modelcontextprotocol/typescript-sdk v1.32.2 is classified as COMPATIBLE (PATCH release). fix: add explicit | undefined to Transport optional proper. Drop-in upgrade. Migration: None.

### What breaking changes or compatibility risks exist in modelcontextprotocol/typescript-sdk v1.32.2?
No breaking API changes or peer dependency conflicts are recorded for modelcontextprotocol/typescript-sdk v1.32.2 in the RepoSense compatibility graph.

### What is the bundle size impact of @modelcontextprotocol/sdk v1.32.2?
Measured bundle size telemetry is currently unavailable for @modelcontextprotocol/sdk v1.32.2; verify build output locally before deploying.

### How do I upgrade @modelcontextprotocol/sdk to v1.32.2?
Upgrade @modelcontextprotocol/sdk to v1.32.2 by running "npm install @modelcontextprotocol/sdk@1.32.2" and applying the migration steps: npm install @modelcontextprotocol/sdk@1.32.2