chat-adapter-teams

Microsoft Teams adapter for chat-py. Python port of upstream packages/adapter-teams.

Talks to the Bot Framework REST API directly via httpx + msal. Upstream uses @microsoft/teams.apps; no stable Python equivalent exists, so the adapter is implemented against the REST surface.

Install

uv add chat-py chat-py-adapter-teams chat-py-adapter-state-redis

Auth / config

TeamsAdapterConfig supports three auth modes:

Additional config: appType ("MultiTenant" or "SingleTenant"), dialogOpenTimeoutMs, apiUrl.

Minimal example

from chat import Chat
from chat_adapter_teams import create_teams_adapter
from chat_adapter_state_redis import create_redis_state

bot = Chat(
    user_name="mybot",
    adapters={"teams": create_teams_adapter()},  # reads TEAMS_APP_ID etc.
    state=create_redis_state(url="redis://localhost:6379"),
)


@bot.on_new_message
async def reply(thread, message):
    await thread.post("Received.")

Mount bot.handle_webhook("teams", body, headers) under /api/webhooks/teams. The webhook handler verifies Bot Framework-signed JWTs via verify_bearer_token.

Thread ID

Teams thread IDs: teams:{base64(conversationId)}:{base64(serviceUrl)}.

Parity notes

• JWT verification uses the same JWKS + issuer allowlist as upstream.
• Adaptive Card translation (card_to_adaptive_card) targets the same schema as upstream's converter.
• TeamsFormatConverter produces the same markdown↔mdast output.
• Known gaps (v0.1.0 — raises NotImplementedError):
  • Microsoft Graph API conversation reader (read_thread)
  • Certificate-based auth (certificate config field)
• Live event dispatch (@microsoft/teams.apps) is not ported; handle_webhook is a JWT-verifying shim. Full dispatch lands with the async Adapter protocol in core.

Test

uv run pytest packages/chat-adapter-teams

# Live — requires an app registration
TEAMS_APP_ID=... TEAMS_APP_PASSWORD=... uv run pytest packages/chat-integration-tests -k teams

Upstream

https://github.com/vercel/chat/tree/main/packages/adapter-teams