# Helix 1.6.0: MCP tooling and SDK updates

> A new MCP tool lets agents list authentication templates, alongside internal SDK improvements for the CLI.

- Released: 2 Oct 2026 (2026-10-02)
- Packages: @trayai/helix-cli@1.6.0, @trayai/helix-sdk@1.6.0

## Headline changes

### Added: `tray_list_authentication_templates` MCP tool

Agents can now call `tray_list_authentication_templates` to discover available authentication templates programmatically. This makes it easier for AI-driven workflows to inspect and select the right authentication setup without manual lookup.

Docs: https://helix.tray.ai/documentation/guides/ai/

## Other changes

### Changed

- Guidance for APIs without a dedicated service
- Internal `@trayai/helix-sdk/broker` additions supporting the Helix CLI's new…

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Canonical: https://helix.tray.ai/documentation/releases/160/
This file: https://helix.tray.ai/documentation/releases/160.md
The full changelog: https://helix.tray.ai/documentation/releases.md