Implementation:Microsoft Autogen Studio Auth Manager

Metadata
Sources	python/packages/autogen-studio/autogenstudio/web/auth/manager.py
Domains	Authentication, JWT, Configuration, Token_Management
Last Updated	2026-02-11 17:00 GMT

Overview

Description

The Studio Auth Manager module implements the AuthManager class, which serves as the central authentication management system for AutoGen Studio. It handles token creation, validation, request authentication, and provider selection based on configuration. The manager supports multiple authentication providers (GitHub, MSAL, Firebase, None) and uses JWT tokens for session management.

The AuthManager follows the Factory pattern for provider creation and provides class methods for configuration loading from YAML files or environment variables. It integrates seamlessly with FastAPI middleware for request-level authentication.

Usage

This module is used to:

Create and validate JWT tokens for authenticated users
Select and initialize auth providers based on configuration
Authenticate incoming requests by validating bearer tokens
Load configuration from YAML files or environment variables
Manage token expiry and validation logic

Code Reference

Source Location

Repository: https://github.com/microsoft/autogen
File Path: python/packages/autogen-studio/autogenstudio/web/auth/manager.py
Lines: 150

Class Signature

class AuthManager:
    """
    Manages authentication for the application.
    Handles token creation, validation, and provider selection.
    """

    def __init__(self, config: AuthConfig): ...
    def _create_provider(self) -> AuthProvider: ...
    def create_token(self, user: User) -> str: ...
    async def authenticate_request(self, request: Request) -> User: ...
    def is_valid_token(self, token: str) -> bool: ...

    @classmethod
    def from_yaml(cls, yaml_path: str) -> Self: ...

    @classmethod
    def from_env(cls) -> Self: ...

Import Statement

from autogenstudio.web.auth.manager import AuthManager

I/O Contract

Constructor

Parameter	Type	Description
config	AuthConfig	Authentication configuration including type, secrets, and provider configs

Instance Attributes

Attribute	Type	Description
config	AuthConfig	Authentication configuration
provider	AuthProvider	Selected authentication provider (GithubAuthProvider, MSALAuthProvider, FirebaseAuthProvider, NoAuthProvider)

create_token()

Parameter	Type	Description
user	User	Authenticated user object

Returns: JWT token string

Payload Structure:

{
    "sub": "user_id",
    "name": "User Name",
    "email": "user@example.com",
    "provider": "github",
    "roles": ["user"],
    "exp": 1738432800
}

authenticate_request()

Parameter	Type	Description
request	Request	FastAPI Request object

Returns: User object

Raises:

MissingTokenException - No Authorization header or invalid format
InvalidTokenException - Token expired or invalid signature

is_valid_token()

Parameter	Type	Description
token	str	JWT token to validate

Returns: Boolean indicating validity

from_yaml()

Parameter	Type	Description
yaml_path	str	Path to YAML configuration file

Returns: AuthManager instance

Raises: ConfigurationException on load failure

from_env()

Returns: AuthManager instance configured from environment variables

Environment Variables:

Variable	Description
AUTOGENSTUDIO_AUTH_TYPE	Auth type: "none", "github", "msal", "firebase"
AUTOGENSTUDIO_JWT_SECRET	Secret key for JWT signing
AUTOGENSTUDIO_TOKEN_EXPIRY	Token expiry in minutes (default: 60)
AUTOGENSTUDIO_GITHUB_CLIENT_ID	GitHub OAuth client ID
AUTOGENSTUDIO_GITHUB_CLIENT_SECRET	GitHub OAuth client secret
AUTOGENSTUDIO_GITHUB_CALLBACK_URL	GitHub OAuth callback URL
AUTOGENSTUDIO_GITHUB_SCOPES	Comma-separated GitHub scopes

Usage Examples

Initialization from Environment

import os
from autogenstudio.web.auth.manager import AuthManager

# Set environment variables
os.environ['AUTOGENSTUDIO_AUTH_TYPE'] = 'github'
os.environ['AUTOGENSTUDIO_JWT_SECRET'] = 'your-secret-key-here'
os.environ['AUTOGENSTUDIO_GITHUB_CLIENT_ID'] = 'your-client-id'
os.environ['AUTOGENSTUDIO_GITHUB_CLIENT_SECRET'] = 'your-client-secret'
os.environ['AUTOGENSTUDIO_GITHUB_CALLBACK_URL'] = 'http://localhost:8000/api/auth/callback'

# Create manager
auth_manager = AuthManager.from_env()
print(f"Auth type: {auth_manager.config.type}")

Initialization from YAML

# config.yaml:
# type: github
# jwt_secret: my-secret-key
# token_expiry_minutes: 120
# github:
#   client_id: abc123
#   client_secret: secret123
#   callback_url: http://localhost:8000/api/auth/callback
#   scopes: [user:email, read:user]

auth_manager = AuthManager.from_yaml('config.yaml')

Creating Tokens

from autogenstudio.web.auth.models import User

# Create user object (typically from OAuth provider)
user = User(
    id="12345",
    name="John Doe",
    email="john@example.com",
    provider="github",
    roles=["user", "admin"]
)

# Create JWT token
token = auth_manager.create_token(user)
print(f"Token: {token}")
# Output: eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9...

Authenticating Requests

from fastapi import Request, HTTPException
from autogenstudio.web.auth.exceptions import MissingTokenException, InvalidTokenException

async def protected_route(request: Request):
    try:
        user = await auth_manager.authenticate_request(request)
        return {"user": user.name, "email": user.email}
    except MissingTokenException:
        raise HTTPException(status_code=401, detail="No token provided")
    except InvalidTokenException:
        raise HTTPException(status_code=401, detail="Invalid token")

Validating Tokens

# Validate a token without extracting payload
token = "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9..."

if auth_manager.is_valid_token(token):
    print("Token is valid")
else:
    print("Token is invalid or expired")

Integration with FastAPI

from fastapi import FastAPI
from autogenstudio.web.auth.manager import AuthManager
from autogenstudio.web.auth.middleware import AuthMiddleware
from autogenstudio.web.auth.authroutes import router as auth_router

app = FastAPI()

# Initialize auth manager and store in app state
auth_manager = AuthManager.from_env()
app.state.auth_manager = auth_manager

# Add authentication middleware
app.add_middleware(AuthMiddleware, auth_manager=auth_manager)

# Include auth routes
app.include_router(auth_router, prefix="/api/auth", tags=["auth"])

@app.get("/api/protected")
async def protected_route(request: Request):
    # User automatically populated by middleware
    user = request.state.user
    return {"message": f"Hello {user.name}"}

No-Auth Mode

# For development without authentication
os.environ['AUTOGENSTUDIO_AUTH_TYPE'] = 'none'

auth_manager = AuthManager.from_env()

# All requests return default user
user = await auth_manager.authenticate_request(request)
print(user.id)  # "guestuser@gmail.com"
print(user.name)  # "Default User"

Custom Provider Selection

# The manager automatically selects provider based on config
from autogenstudio.web.auth.models import AuthConfig, GithubAuthConfig

config = AuthConfig(
    type="github",
    jwt_secret="my-secret",
    github=GithubAuthConfig(
        client_id="abc123",
        client_secret="secret123",
        callback_url="http://localhost:8000/callback",
        scopes=["user:email"]
    )
)

auth_manager = AuthManager(config)
print(type(auth_manager.provider))  # <class 'GithubAuthProvider'>

Implementation Details

Provider Factory

The _create_provider() method implements the Factory pattern:

def _create_provider(self) -> AuthProvider:
    try:
        if self.config.type == "github":
            return GithubAuthProvider(self.config)
        elif self.config.type == "msal":
            return MSALAuthProvider(self.config)
        elif self.config.type == "firebase":
            return FirebaseAuthProvider(self.config)
        else:
            return NoAuthProvider()
    except Exception as e:
        logger.error(f"Failed to create auth provider: {str(e)}")
        # Fall back to no auth if provider creation fails
        return NoAuthProvider()

JWT Token Creation

Tokens are created using PyJWT library:

Algorithm: HS256
Expiry: Configurable (default 60 minutes)
Payload includes user metadata
Fallback to insecure dummy token if no JWT secret

Request Authentication Flow

Check if path is in exclude_paths → return default user
Check if auth type is "none" → return default user
Extract Authorization header
Validate "Bearer " prefix
Decode JWT with HS256 algorithm
Verify expiry and signature
Return User object from payload
On error: raise MissingTokenException or InvalidTokenException

Excluded Paths

The following paths bypass authentication by default:

/
/api/health
/api/version
/api/auth/login-url
/api/auth/callback-handler
/api/auth/callback
/api/auth/type

Additional paths can be added in AuthConfig.

Error Handling

Token validation errors are categorized:

jwt.ExpiredSignatureError → InvalidTokenException
jwt.InvalidTokenError → InvalidTokenException
Errors logged with token prefix (first 10 chars)

Development Mode

When JWT secret is not configured:

create_token() returns "dummy_token_" + user_id
authenticate_request() accepts all tokens
is_valid_token() always returns True
Warning logged for insecure operation

Related Pages

Microsoft_Autogen_Studio_Auth_Providers - Authentication provider implementations
Microsoft_Autogen_Studio_Auth_Models - AuthConfig and User models
Microsoft_Autogen_Studio_Auth_Middleware - Middleware using AuthManager
Microsoft_Autogen_Studio_Auth_Routes - Routes using AuthManager
Domain:Authentication - Authentication patterns
Domain:JWT - JSON Web Token standard
Domain:Configuration - Configuration management patterns

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