v2.0.15

This maintenance release improves authentication configuration, Teams messaging and invoke support, activity handling, and SDK reliability while keeping the stable 2.0 API line. It contains eligible changes after v2.0.14 through the pre-Agent-365 cutoff; Agent 365 and other 2.1-only work are intentionally excluded.

Highlights

• Adds experimental HTML widgets for MCP Apps UI and improves the example rendering (#626, #678) by Corina (@corinagum).
• Adds typed application/search invoke support for Adaptive Card dynamic typeahead (#667) by Corina (@corinagum).
• Sends OAuth/SSO sign-in cards directly in group chats and channels using targeted messages (#676) by Lily Du (@lilyydu).
• Replaces the ambiguous skipAuth option with dangerouslyAllowUnauthenticatedRequests, while retaining skipAuth as a deprecated compatibility alias (#636) by Aamir Jawaid (@heyitsaamir).

Changes

Activities, messaging, and authentication

• Add optional app metadata to ChannelData (#644) by Mehak Bindra (@MehakBindra).
• Preserve live activity instances so channel, team, meeting, notification, and tenant accessors resolve correctly (#647) by Corina (@corinagum).
• Add oauth.fetchUserToken control and skip eager per-activity token lookup when OAuth is not configured (#653) by Corina (@corinagum).
• Align reply POST requests with the base activities endpoint while preserving replyToId semantics (#665) by Corina (@corinagum).
• Add teamMemberAdded and teamMemberRemoved to the typed conversation update event union (#666) by Corina (@corinagum).

Tooling, tests, and documentation

• Prune unused dependencies and add knip checks to CI (#554) by Aamir Jawaid (@heyitsaamir).
• Port CI fixes and prepare the 2.0.15 release line (#650) by Lily Du (@lilyydu).
• Align integration-test environment variable names across SDKs (#651) by Corina (@corinagum).
• Document that extendedmarkdown remains in public preview (#659) by Kavin (@singhk97).

Dependency updates

• Update Axios (#660), form-data (#661), body-parser (#663), shell-quote/concurrently (#664), @hono/node-server (#669), Hono (#670), fast-uri (#671), React Router (#672, #674), and PostCSS (#673) via Dependabot (@dependabot).

Install

npm install @microsoft/teams.apps@latest