v2.0.15

v2.0.15 is a stable maintenance release with API, authentication, streaming, invoke, and HTML widget improvements. It also refreshes examples, documentation, dependencies, and release-pipeline reliability.

Highlights

• Added HTML widget support for MCP Apps UI (#490) and improved the example rendering (#528) — Corina (@corinagum).
• Added application/search invoke support across the API and Apps packages (#523) — Corina (@corinagum).
• Threaded streamed activities under the inbound message using reply_to_id (#529) — Lily Du (@lilyydu).
• Added native OAuth/SSO sign-in cards for group chats and channels, while removing the 1:1 fallback (#510) — Lily Du (@lilyydu).

Changes

APIs and activity handling

• Flattened client method chains to reduce call hops (#502) — Lily Du (@lilyydu).
• Deprecated skip_auth in favor of the unauthenticated-request option (#501) and removed typed extras from message activity input (#507) — Aamir Jawaid (@heyitsaamir).
• Added app information to ChannelData (#504) — Mehak Bindra (@MehakBindra).
• Added an opt-out for per-activity user-token lookup (#512) and removed activityId from the reply POST URL (#521) — Corina (@corinagum).
• Made conversationUpdate parsing tolerant of channel-member and unknown event types (#522) — Corina (@corinagum).
• Improved the error returned when content streaming is not allowed (#500) — Lily Du (@lilyydu).

Documentation and examples

• Added Tab Web proxy guidance (#503) — Corina (@corinagum).
• Documented extendedmarkdown as public preview (#517) — Kavin (@singhk97).
• Updated the AI MCP example guidance (#526) — Rajan (@rajan-chari).
• Aligned integration-test environment variable names with the C# convention (#511) — Corina (@corinagum).

Dependencies and release reliability

• Updated MCP (#509), pyasn1 (#525), and Tab Web dependencies (#518, #519, #527) — Dependabot (@dependabot).
• Fixed NBGV setup (#540) and installed locked test dependencies (#543) in the publish pipeline — Aamir Jawaid (@heyitsaamir).

Install

pip install --upgrade "microsoft-teams-apps==2.0.15"