Microsoft Agents Hosting - Slack

Integration library for building Slack agents using the Microsoft 365 Agents SDK. Provides direct-to-Slack responses (the full Slack Web API surface, beyond what Azure Bot Service exposes), a typed SlackChannelData envelope with dot-notation property access, and a SlackStream helper for chat.startStream / chat.appendStream / chat.stopStream.

Release Notes

Version	Date	Release Notes
1.4.0	2026-08-18	1.4.0 Release Notes
1.3.0	2026-07-30	1.3.0 Release Notes
1.2.0	2026-07-17	1.2.0 Release Notes
1.1.0	2026-06-19	1.1.0 Release Notes

Packages Overview

We offer the following PyPI packages to create conversational experiences based on Agents:

Package Name	PyPI Version	Description
`microsoft-agents-activity`		Types and validators implementing the Activity protocol spec.
`microsoft-agents-hosting-core`		Core library for Microsoft Agents hosting.
`microsoft-agents-hosting-aiohttp`		Configures aiohttp to run the Agent.
`microsoft-agents-hosting-fastapi`		Configures fastapi to run the Agent.
`microsoft-agents-hosting-msteams`		Provides classes to host an Agent for Teams.
`microsoft-agents-hosting-dialogs`		Dialog system with waterfall dialogs, prompts, and multi-turn conversation management.
`microsoft-agents-hosting-slack`		Provides classes to host an Agent for Slack.
`microsoft-agents-storage-blob`		Extension to use Azure Blob as storage.
`microsoft-agents-storage-cosmos`		Extension to use CosmosDB as storage.
`microsoft-agents-authentication-msal`		MSAL-based authentication for Microsoft Agents.
`microsoft-agents-authentication-entra-auth-sidecar`		Credential-free Entra ID Agent ID authentication via the sidecar.

Installation

pip install microsoft-agents-hosting-slack

Usage

from microsoft_agents.hosting.core.app import AgentApplication
from microsoft_agents.hosting.slack import SlackAgentExtension
from microsoft_agents.hosting.slack.api import SlackChannelData

app = AgentApplication(options)
slack = SlackAgentExtension(app)

@slack.on_message()
async def on_slack_message(context, state):
    channel_data = SlackChannelData.from_activity(context.activity)
    await slack.call(
        context,
        "chat.postMessage",
        {
            "channel": channel_data.get("event.channel"),
            "text": f"You said: {context.activity.text}",
        },
        token=channel_data.api_token,
    )

Key Classes

SlackAgentExtension — registers Slack-channel-scoped message/event handlers; exposes call(...) and create_stream(...).
SlackChannelData — typed wrapper around Bot Service's Slack channel-data payload with get(path) / try_get(path) accessors.
SlackApi — async HTTP client for the Slack Web API.
SlackStream — wraps Slack's streaming methods for incremental message updates.
SlackHelpers — encode/decode and conversation-id parsing utilities.

Quick Links

Release files for microsoft-agents-hosting-slack 1.5.0.dev11

For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.

Source distribution (sdist)

Source distribution for microsoft-agents-hosting-slack 1.5.0.dev11
File	Size	Uploaded
microsoft_agents_hosting_slack-1.5.0.dev11.tar.gz	15.2 kB	Aug 26, 2026	Details

Built distribution (wheel)

Table of built distributions (wheels) for microsoft-agents-hosting-slack 1.5.0.dev11
File	Interpreter	ABI	Platform	Reset
microsoft_agents_hosting_slack-1.5.0.dev11-py3-none-any.whl 19.8 kB Aug 26, 2026	Python 3	none	any	Details

Total release size: 35.0 kB

Release files / microsoft_agents_hosting_slack-1.5.0.dev11.tar.gz

Download URL	microsoft_agents_hosting_slack-1.5.0.dev11.tar.gz
Size	15.2 kB
Tags	Source
SHA-256 checksum How to use checksums	`836cf81e12274d974972899d3aa5dba36e1724380af4f63bbee298ed6e4b7cb3`
BLAKE2b-256 checksum How to use checksums	`65eef38a5f586c0f905b68338e24bb9fcd149cfbf292be8086bf669628ba9538`
Upload date	Aug 26, 2026
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`RestSharp/106.13.0.0`

Release files / microsoft_agents_hosting_slack-1.5.0.dev11-py3-none-any.whl

Download URL	microsoft_agents_hosting_slack-1.5.0.dev11-py3-none-any.whl
Size	19.8 kB
Tags	Python 3
SHA-256 checksum How to use checksums	`ffde6cdc0392bb2dd2a0bb4ff6d9d719becedf0a5076beff76473212b5d7330a`
BLAKE2b-256 checksum How to use checksums	`edec94ee046b914db7e0a70e7ab3e5c1e408043cedfbecf3f8b32270e0dc0323`
Upload date	Aug 26, 2026
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`RestSharp/106.13.0.0`