azure-appconfiguration-py

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SKILL.md (first lines)

# Azure App Configuration SDK for Python

Centralized configuration management with feature flags and dynamic settings.

## Installation

```bash
pip install azure-appconfiguration
```

## Environment Variables

```dotenv
AZURE_APPCONFIGURATION_CONNECTION_STRING=Endpoint=https://<name>.azconfig.io;Id=...;Secret=...
# Or for Entra ID:
AZURE_APPCONFIGURATION_ENDPOINT=https://<name>.azconfig.io
```

## Authentication

### Connection String

```python
import os
from azure.appconfiguration import AzureAppConfigurationClient

client = AzureAppConfigurationClient.from_connection_string(
    os.environ["AZURE_APPCONFIGURATION_CONNECTION_STRING"]
)
```

### Entra ID

```python
from azure.appconfiguration import AzureAppConfigurationClient
from azure.identity import DefaultAzureCredential

client = AzureAppConfigurationClient(
    base_url=os.environ["AZURE_APPCONFIGURATION_ENDPOINT"],
    credential=DefaultAzureCredential()
)
```

Examples are independent fragments requiring azure-identity for Entra auth and project endpoint variables. Confirm store/label/key and read the current ETag before replacement/deletion; use appropriate match conditions for concurrent edits. Feature flag changes affect real users, and unlocking a setting is a separate privileged change. Use approved synthetic values, minimize listing scope, keep credentials/value payloads out of logs, and close both async credential/client on failure. Snapshots need actual creation status and tested restore procedure; schema-valid flags do not themselves implement gradual rollout or an A/B experiment.

## Configuration Settings

### Get Setting

```python
setting = client.get_configuration_setting(key="app:settings:message")
print(f"Read setting: {setting.key}")  # Do not log secret-bearing values
```

### Get with Label

```python
# Labels allow environment-specific values
setting = client.get_configuration_setting(
    key="app:settings:message",
    label="production"
)
```

### Set Setting

```python
from azure.appconfiguration import ConfigurationSetting

setting = ConfigurationSetting(
    key="app:settings:message",
    value="Hello, World!",
    label="development",
    content_type="text/plain",
    tags={"environment": "dev"}
)

client.set_configuration_setting(setting)
```

### Delete Setting

```python
client.delete_configuration_setting(
    key="app:settings:message",
    label="development"
)
```

## List Settings

### All Settings

```python
settings = client.list_configuration_settings()
for setting in settings:
    print(f"{setting.key} [{setting.label}]")  # Values may be sensitive
```

### Filter by Key Prefix

```python
settings = client.list_configuration_settings(
    key_filter="app:settings:*"
)
```

### Filter by Label

```python
settings = client.list_configuration_settings(
    label_filter="production"
)
```

## Feature Flags

### Set Feature Flag

From sickn33/agentic-awesome-skills, MIT.

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