# Anthropic TypeScript SDK v0.106.0 — sdk: v0.106.0

- Product: Anthropic TypeScript SDK (https://whatsnew.fyi/product/anthropic-sdk-typescript)
- Vendor: Anthropic
- Date: 2026-06-24
- Version: v0.106.0
- Original notes: https://github.com/anthropics/anthropic-sdk-typescript/releases/tag/sdk-v0.106.0
- Permalink: https://whatsnew.fyi/product/anthropic-sdk-typescript/releases/v0.106.0

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.

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- **added** — Add support for system.message streaming events
- **fixed** — Fix x-stainless-helper header as single source with append semantics and tag the fallback middleware
- **added** — Add support for new refusal category
- **added** — Add support for sending User Profile ID in request headers

##### 0.106.0 (2026-06-24)

Full Changelog: [sdk-v0.105.0...sdk-v0.106.0](https://github.com/anthropics/anthropic-sdk-typescript/compare/sdk-v0.105.0...sdk-v0.106.0)

###### Features

* **client:** add support for system.message streaming events ([a7c14b7](https://github.com/anthropics/anthropic-sdk-typescript/commit/a7c14b7ffc8295e34d8c159d1374f170d2b87767))


###### Bug Fixes

* **helpers:** single source for x-stainless-helper, append semantics, and tag the fallback middleware ([#107](https://github.com/anthropics/anthropic-sdk-typescript/issues/107)) ([106bea0](https://github.com/anthropics/anthropic-sdk-typescript/commit/106bea081439ece2cb0170e56b24c5f039af5e16))


###### Chores

* **api:** add support for new refusal category ([b38fd01](https://github.com/anthropics/anthropic-sdk-typescript/commit/b38fd01d15bcd519aa66cd640a8ad40310ae9d01))
* **api:** add support for sending User Profile ID in request headers ([198583e](https://github.com/anthropics/anthropic-sdk-typescript/commit/198583e2fc3236f62a85ef7be0bfdfdea2164264))