# Anthropic TypeScript SDK v0.91.0 — sdk: v0.91.0

- Product: Anthropic TypeScript SDK (https://whatsnew.fyi/product/anthropic-sdk-typescript)
- Vendor: Anthropic
- Date: 2026-04-23
- Version: v0.91.0
- Original notes: https://github.com/anthropics/anthropic-sdk-typescript/releases/tag/sdk-v0.91.0
- Permalink: https://whatsnew.fyi/product/anthropic-sdk-typescript/releases/v0.91.0

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** — CMA Memory public beta
- **changed** — Use auth header for mantle client in bedrock
- **fixed** — Fix errors in api spec
- **fixed** — Restore missing features

##### 0.91.0 (2026-04-23)

Full Changelog: [sdk-v0.90.0...sdk-v0.91.0](https://github.com/anthropics/anthropic-sdk-typescript/compare/sdk-v0.90.0...sdk-v0.91.0)

###### Features

* **api:** CMA Memory public beta ([ddf732f](https://github.com/anthropics/anthropic-sdk-typescript/commit/ddf732f5f35c123f963fa270669e35707a2e3f7f))
* **bedrock:** use auth header for mantle client ([#866](https://github.com/anthropics/anthropic-sdk-typescript/issues/866)) ([aec801a](https://github.com/anthropics/anthropic-sdk-typescript/commit/aec801afc7d37d9e8ca1471748ca599b442cbce4))


###### Bug Fixes

* **api:** fix errors in api spec ([ae10768](https://github.com/anthropics/anthropic-sdk-typescript/commit/ae1076848587c6f994b45e3030269a635d38bc0b))
* **api:** restore missing features ([1a5b47b](https://github.com/anthropics/anthropic-sdk-typescript/commit/1a5b47b6895ee2c47af8adea1f403b76dd3ca62f))


###### Chores

* **internal:** more robust bootstrap script ([7716e19](https://github.com/anthropics/anthropic-sdk-typescript/commit/7716e19f7fceeb63bb20b9e4df904a021ae705dc))
* **tests:** bump steady to v0.22.1 ([219a971](https://github.com/anthropics/anthropic-sdk-typescript/commit/219a9717439a458189ac83633b2d5cd9f1ad7d25))