# Harness TypeScript v1.0.0-rc.2

Released 2026-03-31
Release: https://github.com/strands-agents/sdk-typescript/releases/tag/v1.0.0-rc.2 · Package: https://www.npmjs.com/package/@strands-agents/sdk/v/1.0.0-rc.2

## Features
- make multiagent state implements stateSerializable [multiagent] (https://github.com/strands-agents/sdk-typescript/pull/740)
- add VercelModel adapter for Language Model Specification v3 providers (https://github.com/strands-agents/sdk-typescript/pull/702)
- add SummarizationConversationManager (https://github.com/strands-agents/sdk-typescript/pull/746)
- mark LocalAgent interface as internal-only (https://github.com/strands-agents/sdk-typescript/pull/755)
- add Model to Before/AfterModelCallEvent. add Model to Conversat… (https://github.com/strands-agents/sdk-typescript/pull/754)
- rename summarization -\> SummarizingConversationManager; mark mo… (https://github.com/strands-agents/sdk-typescript/pull/766)

## Other
- rename VercelModelOptions.model to provider (https://github.com/strands-agents/sdk-typescript/pull/753)