azure-identity-rust

Azure Identity SDK for Rust authentication. Use for DeveloperToolsCredential, ManagedIdentityCredential, ClientSecretCredential, and token-based authentication.

Try it — you'd type

“Help me with azure-identity-rust.”

And you'd get back

Azure Identity SDK for Rust authentication.

Use for DeveloperToolsCredential, ManagedIdentityCredential, ClientSecretCredential, and token-based authentication.

Adding it takes about 30 seconds

Click Get this skill. Grab the .md file, one click, no account needed.

Add it to Claude. Drop it into ~/.claude/skills/. Claude picks it up the next time you open a session.

Ask normally. Type your question. The skill triggers on the right keywords — you don't have to remember anything.

Unlock all skills — $25

You might also like

Dependency Audit

Audit dependencies for known vulnerabilities

Secret Scanner

Scan codebase for leaked secrets and credentials

CSP Generator

Generate Content Security Policy headers

Input Sanitizer

Add input sanitization to prevent injection attacks

Auth Middleware

Create authentication middleware

RBAC Setup

Implement role-based access control

SKILL FILEWhat Claude actually reads

Authentication library for Azure SDK clients using Microsoft Entra ID (formerly Azure AD).

## Installation

```sh
cargo add azure_identity
```

## Environment Variables

```bash
# 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>
```

## DeveloperToolsCredential

The recommended credential for local development. Tries developer tools in order (Azure CLI, Azure Developer CLI):

```rust
use azure_identity::DeveloperToolsCredential;
use azure_security_keyvault_secrets::SecretClient;

let credential = DeveloperToolsCredential::new(None)?;
let client = SecretClient::new(
    "https://my-vault.vault.azure.net/",
    credential.clone(),
    None,
)?;
```

### Credential Chain Order

| Order | Credential | Environment |
|-------|-----------|-------------|
| 1 | AzureCliCredential | `az login` |
| 2 | AzureDeveloperCliCredential | `azd auth login` |

## Credential Types

| Credential | Usage |
|------------|-------|
| `DeveloperToolsCredential` | Local development - tries CLI tools |
| `ManagedIdentityCredential` | Azure VMs, App Service, Functions, AKS |
| `WorkloadIdentityCredential` | Kubernetes workload identity |
| `ClientSecretCredential` | Service principal with secret |
| `ClientCertificateCredential` | Service principal with certificate |
| `AzureCliCredential` | Direct Azure CLI auth |
| `AzureDeveloperCliCredential` | Direct azd CLI auth |
| `AzurePipelinesCredential` | Azure Pipelines service connection |
| `ClientAssertionCredential` | Custom assertions (federated identity) |

## ManagedIdentityCredential

For Azure-hosted resources:

```rust
use azure_identity::ManagedIdentityCredential;

// System-assigned managed identity
let credential = ManagedIdentityCredential::new(None)?;

// User-assigned managed identity
let options = ManagedIdentityCredentialOptions {
    client_id: Some("<user-assigned-mi-client-id>".into()),
    ..Default::default()
};
let credential = ManagedIdentityCredential::new(Some(options))?;
```

## ClientSecretCredential

For service principal with secret:

```rust
use azure_identity::ClientSecretCredential;

let credential = ClientSecretCredential::new(
    "<tenant-id>".into(),
    "<client-id>".into(),
    "<client-secret>".into(),
    None,
)?;
```

## Best Practices

1. **Use `DeveloperToolsCredential` for local dev** — automatically picks up Azure CLI
2. **Use `ManagedIdentityCredential` in production** — no secrets to manage
3. **Clone credentials** — credentials are `Arc`-wrapped and cheap to clone
4. **Reuse credential instances** — same credential can be used with multiple clients
5. **Use `tokio` feature** — `cargo add azure_identity --features tokio`

## Reference Links

| Resource | Link |
|----------|------|
| API Reference | https://docs.rs/azure_identity |
| Source Code | https://github.com/Azure/azure-sdk-for-rust/tree/main/sdk/identity/azure_identity |
| crates.io | https://crates.io/crates/azure_identity |

## When to Use
This skill is applicable to execute the workflow or actions described in the overview.