Azure Identity Rust

What it does

When your agent uses it

• Tasks that involve Authentication

Example prompts

• “azure identity rust”
• “DeveloperToolsCredential”
• “authentication rust”
• “/azure-identity-rust”

Requirements

• A credential in AZURE_CLIENT_SECRET

Workflow steps

9 steps, taken from the first numbered list in SKILL.md.

1. 1Use cargo add to manage dependencies, never edit Cargo.toml directly. Add and remove Rust SDK dependencies with cargo commands instead of…
2. 2Add azure_core only when importing azure_core types directly. If your code imports azure_core::http::Url…
3. 3Use DeveloperToolsCredential for local dev, ManagedIdentityCredential for production — Rust does not provide a single…
4. 4Never hardcode credentials — use environment variables for service principals
5. 5Clone credentials — pass credential.clone() when constructing multiple clients; credentials are Arc-wrapped
6. 6Reuse clients — clients are thread-safe; create once, share across tasks
7. 7Assign RBAC roles — ensure the identity has appropriate roles for the target service (e.g., "Key Vault Secrets User" for secret reads)
8. 8Run cargo clippy -- -D warnings when the prompt, eval, or CI expects lint-clean output; Rust trajectory graders can fail on style lints…
9. 9Future-proof #[non_exhaustive] SDK models — when constructing SDK model/options structs, end the initializer with ..Default::default()…

What it can do on your machine

Read from SKILL.md and the folder at commit 354361d. It shows what the files ask for, not the result of running them.

• Tool permissions

  Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

  From allowed-tools in the SKILL.md frontmatter.

• Runs code

  Shell commands in SKILL.md call:

  • cargo
  • az

  From the folder's file list and the shell code blocks in SKILL.md.

• Network

  Links to these hosts (documentation or services it may open):

  • crates.io
  • docs.rs
  • github.com

  From URLs in SKILL.md, links to its own repository left out.

• Credentials

  Names these keys or tokens, usually read from environment variables:

  • AZURE_CLIENT_SECRET

  From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Azure Identity Rust loads about 1.6k tokens when it runs. Until then it costs about 65 tokens; SKILL.md has 423 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it

~65

When it runs · the whole SKILL.md, loaded when a task matches

~1.6k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from microsoft/skills at commit 354361d, republished under its MIT licence (© microsoft). 423 words, ~1,586 tokens.

name

azure-identity-rust

description

Azure Identity library for Rust. Microsoft Entra ID authentication for all Azure SDK clients. Triggers: "azure identity rust", "DeveloperToolsCredential", "authentication rust", "managed identity rust", "credential rust", "Entra ID rust".

license

MIT

metadata.author

Microsoft

metadata.package

azure_identity

// Incorrect in Rust: this type does not exist in azure_identity
use azure_identity::DefaultAzureCredential;

cargo add azure_identity azure_core tokio

AZURE_TENANT_ID=<your-tenant-id>         # Required for service principal auth
AZURE_CLIENT_ID=<your-client-id>         # Required for service principal or user-assigned managed identity
AZURE_CLIENT_SECRET=<your-client-secret> # Required for ClientSecretCredential

use azure_identity::DeveloperToolsCredential;
use azure_security_keyvault_secrets::SecretClient;

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    // Local dev: DeveloperToolsCredential. Production: use ManagedIdentityCredential.
    let credential = DeveloperToolsCredential::new(None)?;
    let client = SecretClient::new(
        "https://<vault-name>.vault.azure.net/",
        credential.clone(),
        None,
    )?;

    let secret = client.get_secret("secret-name", None).await?.into_model()?;
    println!("Secret: {:?}", secret.value);
    Ok(())
}

az login        # Azure CLI
azd auth login  # or Azure Developer CLI

use azure_identity::ManagedIdentityCredential;

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

use azure_identity::ClientSecretCredential;

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

© microsoft, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in .github/plugins/azure-sdk-rust/skills/azure-identity-rust of microsoft/skills.

Open the folder on GitHubat commit 354361d