Microsoft Agents Hosting FastAPI
This library provides FastAPI integration for Microsoft Agents, enabling you to build conversational agents using the FastAPI web framework.
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 |
| 1.0.0 | 2026-05-22 | 1.0.0 Release Notes |
| 0.9.1 | 2026-05-04 | 0.9.1 Release Notes |
| 0.9.0 | 2026-04-15 | 0.9.0 Release Notes |
| 0.8.0 | 2026-02-23 | 0.8.0 Release Notes |
| 0.7.0 | 2026-01-21 | 0.7.0 Release Notes |
| 0.6.1 | 2025-12-01 | 0.6.1 Release Notes |
| 0.6.0 | 2025-11-18 | 0.6.0 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. |
Features
- FastAPI integration for Microsoft Agents
- JWT authorization middleware
- Channel service API endpoints
- Streaming response support
- Cloud adapter for processing agent activities
Installation
pip install microsoft-agents-hosting-fastapi
Usage
from fastapi import FastAPI, Request
from microsoft_agents.hosting.fastapi import start_agent_process, CloudAdapter
from microsoft_agents.hosting.core.app import AgentApplication
app = FastAPI()
connection_manager = MsalConnectionManager(**agents_sdk_config)
adapter = CloudAdapter(connection_manager=connection_manager)
agent_app = AgentApplication()
@app.post("/api/messages")
async def messages(request: Request):
return await start_agent_process(request, agent_app, adapter)
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