# Anthropic TypeScript SDK v0.91.1 — sdk: v0.91.1

- Product: Anthropic TypeScript SDK (https://whatsnew.fyi/product/anthropic-sdk-typescript)
- Vendor: Anthropic
- Date: 2026-04-24
- Version: v0.91.1
- Original notes: https://github.com/anthropics/anthropic-sdk-typescript/releases/tag/sdk-v0.91.1
- Permalink: https://whatsnew.fyi/product/anthropic-sdk-typescript/releases/v0.91.1

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'.

---

- **fixed** — Use restrictive file mode for memory files
- **changed** — Run prettier and eslint separately in formatter

##### 0.91.1 (2026-04-24)

Full Changelog: [sdk-v0.91.0...sdk-v0.91.1](https://github.com/anthropics/anthropic-sdk-typescript/compare/sdk-v0.91.0...sdk-v0.91.1)

###### Bug Fixes

* **memory:** use restrictive file mode for memory files ([#901](https://github.com/anthropics/anthropic-sdk-typescript/issues/901)) ([6db3b7e](https://github.com/anthropics/anthropic-sdk-typescript/commit/6db3b7e2218430971cbc137081b5a55ad593fca8))


###### Chores

* **formatter:** run prettier and eslint separately ([974d22f](https://github.com/anthropics/anthropic-sdk-typescript/commit/974d22fcf607b942bff3376c699bc3f6cb3b3ae5))