# Kiro IDE: Third-Party Extension Compatibility and More Reliable MCP Sign-In

- Product: Kiro (https://whatsnew.fyi/product/kiro)
- Vendor: Amazon Web Services
- Date: 2026-08-27
- Original notes: https://kiro.dev/changelog/ide/1-0-395
- Permalink: https://whatsnew.fyi/product/kiro/releases/2026-08-27-ide-third-party-extension-compatibility-and-more
- Labels: Platforms: Desktop

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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This version lets third-party extensions work alongside Kiro, adds support for the latest MCP protocol revision with more reliable sign-in, reduces extension host crashes during large agent responses,…

- **added** — Third-party extensions can now work alongside Kiro
- **added** — Support for the latest MCP protocol revision
- **fixed** — More reliable sign-in for MCP
- **fixed** — Reduce extension host crashes during large agent responses
- **fixed** — Keep agent turns going when the network briefly drops

This version lets third-party extensions work alongside Kiro, adds support for the latest MCP protocol revision with more reliable sign-in, reduces extension host crashes during large agent responses, and keeps agent turns going when the network briefly drops.