# Visual Studio Code 1.143 (Insiders)

> Source: <https://code.visualstudio.com/updates/v1_143>
> Published: 2026-10-15 04:51:11.919103+00:00

# Visual Studio Code 1.143 (Insiders)

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*Last updated: October 14, 2026*

Welcome to the 1.143 Insiders release of Visual Studio Code.

These release notes cover the Insiders build of VS Code and continue to evolve as new features are added.

You can still track our progress in the [Commit log](https://github.com/Microsoft/vscode/commits/main) and our list of [Closed issues](https://github.com/Microsoft/vscode/issues?q=is%3Aissue%20is%3Aclosed%20milestone%3A1.143.0).

Happy Coding!

## October 14, 2026

- Workspace-root `.mcp.json` files support`${VAR}` and`${VAR:-default}` environment variable expansion for MCP server configuration values.*[#340348: Support Env Var expansion in VS Code mcp.json](https://github.com/microsoft/vscode/issues/340348)*

## October 13, 2026

- Add a **Stop Shell** action for detached background shells in Agent Host chats.*[#341329: Offer Stop for detached background shells in Agent Host chats](https://github.com/microsoft/vscode/issues/341329)*

## October 12, 2026

- Extensions can contribute Explorer title actions through `view/title` by using`view == workbench.explorer.fileView` .*[#108271: Add an explorer/title menu contribution point](https://github.com/microsoft/vscode/issues/108271)*

We really appreciate people trying our new features as soon as they are ready, so check back here often and learn what's new.