alexsander532/azure-identity-py
skills_antigravity/skills/azure-identity-py/SKILL.md
Azure Identity SDK for Python authentication. Use for DefaultAzureCredential, managed identity, service principals, and token caching. Triggers: "azure-identity", "DefaultAzureCredential", "authentication", "managed identity", "service principal", "credential".
development
Updated Apr 3, 2026
$ install --global
skillsauthnpx skillsauth add alexsander532/atlas azure-identity-pyInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
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Last scanned: Mar 31, 2026, 7:35 PM57.0s1 file scanned
SKILL.md
- name:
- azure-identity-py
- description:
- |
- Triggers:
- azure-identity", "DefaultAzureCredential", "authentication", "managed identity", "service principal", "credential".
- package:
- azure-identity
Azure Identity SDK for Python
Authentication library for Azure SDK clients using Microsoft Entra ID (formerly Azure AD).
Installation
pip install azure-identity
Environment Variables
# Service Principal (for production/CI)
AZURE_TENANT_ID=<your-tenant-id>
AZURE_CLIENT_ID=<your-client-id>
AZURE_CLIENT_SECRET=<your-client-secret>
# User-assigned Managed Identity (optional)
AZURE_CLIENT_ID=<managed-identity-client-id>
DefaultAzureCredential
The recommended credential for most scenarios. Tries multiple authentication methods in order:
from azure.identity import DefaultAzureCredential
from azure.storage.blob import BlobServiceClient
# Works in local dev AND production without code changes
credential = DefaultAzureCredential()
client = BlobServiceClient(
account_url="https://<account>.blob.core.windows.net",
credential=credential
)
Credential Chain Order
| Order | Credential | Environment |
|-------|-----------|-------------|
| 1 | EnvironmentCredential | CI/CD, containers |
| 2 | WorkloadIdentityCredential | Kubernetes |
| 3 | ManagedIdentityCredential | Azure VMs, App Service, Functions |
| 4 | SharedTokenCacheCredential | Windows only |
| 5 | VisualStudioCodeCredential | VS Code with Azure extension |
| 6 | AzureCliCredential | az login |
| 7 | AzurePowerShellCredential | Connect-AzAccount |
| 8 | AzureDeveloperCliCredential | azd auth login |
Customizing DefaultAzureCredential
# Exclude credentials you don't need
credential = DefaultAzureCredential(
exclude_environment_credential=True,
exclude_shared_token_cache_credential=True,
managed_identity_client_id="<user-assigned-mi-client-id>" # For user-assigned MI
)
# Enable interactive browser (disabled by default)
credential = DefaultAzureCredential(
exclude_interactive_browser_credential=False
)
Specific Credential Types
ManagedIdentityCredential
For Azure-hosted resources (VMs, App Service, Functions, AKS):
from azure.identity import ManagedIdentityCredential
# System-assigned managed identity
credential = ManagedIdentityCredential()
# User-assigned managed identity
credential = ManagedIdentityCredential(
client_id="<user-assigned-mi-client-id>"
)
ClientSecretCredential
For service principal with secret:
from azure.identity import ClientSecretCredential
credential = ClientSecretCredential(
tenant_id=os.environ["AZURE_TENANT_ID"],
client_id=os.environ["AZURE_CLIENT_ID"],
client_secret=os.environ["AZURE_CLIENT_SECRET"]
)
AzureCliCredential
Uses the account from az login:
from azure.identity import AzureCliCredential
credential = AzureCliCredential()
ChainedTokenCredential
Custom credential chain:
from azure.identity import (
ChainedTokenCredential,
ManagedIdentityCredential,
AzureCliCredential
)
# Try managed identity first, fall back to CLI
credential = ChainedTokenCredential(
ManagedIdentityCredential(client_id="<user-assigned-mi-client-id>"),
AzureCliCredential()
)
Credential Types Table
| Credential | Use Case | Auth Method |
|------------|----------|-------------|
| DefaultAzureCredential | Most scenarios | Auto-detect |
| ManagedIdentityCredential | Azure-hosted apps | Managed Identity |
| ClientSecretCredential | Service principal | Client secret |
| ClientCertificateCredential | Service principal | Certificate |
| AzureCliCredential | Local development | Azure CLI |
| AzureDeveloperCliCredential | Local development | Azure Developer CLI |
| InteractiveBrowserCredential | User sign-in | Browser OAuth |
| DeviceCodeCredential | Headless/SSH | Device code flow |
Getting Tokens Directly
from azure.identity import DefaultAzureCredential
credential = DefaultAzureCredential()
# Get token for a specific scope
token = credential.get_token("https://management.azure.com/.default")
print(f"Token expires: {token.expires_on}")
# For Azure Database for PostgreSQL
token = credential.get_token("https://ossrdbms-aad.database.windows.net/.default")
Async Client
from azure.identity.aio import DefaultAzureCredential
from azure.storage.blob.aio import BlobServiceClient
async def main():
credential = DefaultAzureCredential()
async with BlobServiceClient(
account_url="https://<account>.blob.core.windows.net",
credential=credential
) as client:
# ... async operations
pass
await credential.close()
Best Practices
- Use DefaultAzureCredential for code that runs locally and in Azure
- Never hardcode credentials — use environment variables or managed identity
- Prefer managed identity in production Azure deployments
- Use ChainedTokenCredential when you need a custom credential order
- Close async credentials explicitly or use context managers
- Set AZURE_CLIENT_ID for user-assigned managed identities
- Exclude unused credentials to speed up authentication
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