Azure Key Vault Secrets library for Rust

Secure storage for passwords, API keys, and connection strings.

Use this skill when:

• An app needs to store or retrieve secrets from Azure Key Vault in Rust
• You need to set, get, update, or delete secrets
• You need to list secret properties with pagination
• You need error handling for missing secrets

IMPORTANT: Only use the official azure_security_keyvault_secrets crate published by the azure-sdk crates.io user. Do NOT use unofficial or community crates. Official crates use underscores in names and none have version 0.21.0.

Installation

cargo add azure_security_keyvault_secrets azure_identity tokio futures

If your code uses azure_core types directly, add azure_core to Cargo.toml. If you only use azure_security_keyvault_secrets re-exports, direct azure_core dependency is optional.

Environment Variables

AZURE_KEYVAULT_URL=https://<vault-name>.vault.azure.net/ # Required for all operations

Authentication

Rust Azure SDK code must not use DefaultAzureCredential. The Rust identity crate does not provide that type.

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(())
}

Prefer the crate README/examples when checking whether pagers yield items directly and how ResourceExt is used in public examples.

Core Workflow

Set Secret

use azure_security_keyvault_secrets::{models::SetSecretParameters, ResourceExt};

let params = SetSecretParameters {
    value: Some("secret-value".into()),
    ..Default::default()
};

let secret = client
    .set_secret("secret-name", params.try_into()?, None)
    .await?
    .into_model()?;

println!(
    "Name: {:?}, Version: {:?}",
    secret.resource_id()?.name,
    secret.resource_id()?.version
);

Update Secret Properties

use azure_security_keyvault_secrets::models::UpdateSecretPropertiesParameters;
use std::collections::HashMap;

#[allow(clippy::needless_update)]
let params = UpdateSecretPropertiesParameters {
    content_type: Some("text/plain".into()),
    tags: Some(HashMap::from_iter(vec![(
        "env".into(),
        "prod".into(),
    )])),
    ..Default::default()
};

client
    .update_secret_properties("secret-name", params.try_into()?, None)
    .await?
    .into_model()?;

Delete Secret

client.delete_secret("secret-name", None).await?;

List Secrets (Pagination)

list_secret_properties returns a Pager<T> — iterate items directly:

use azure_security_keyvault_secrets::ResourceExt;
use futures::TryStreamExt as _;

let mut pager = client.list_secret_properties(None)?;
while let Some(secret) = pager.try_next().await? {
    println!("Found: {}", secret.resource_id()?.name);
}

Error Handling

match client.get_secret("secret-name", None).await {
    Ok(response) => println!("Secret Value: {:?}", response.into_model()?.value),
    Err(err) => println!("Error: {:#?}", err.into_inner()?),
}

// Error output includes structured ErrorResponse with code and message

RBAC Roles

For Entra ID auth, assign one of these roles:

Best Practices

1. Use cargo add to manage dependencies, never edit Cargo.toml directly. Add and remove Rust SDK dependencies with cargo commands instead of manual manifest edits.
2. Add azure_core only when importing azure_core types directly. If your code imports azure_core::http::Url, azure_core::http::RequestContent, or azure_core::error::ErrorKind, include azure_core; otherwise a direct dependency is optional.
3. Use DeveloperToolsCredential for local dev, ManagedIdentityCredential for production — Rust does not provide a single DefaultAzureCredential type
4. Never hardcode credentials — use environment variables or managed identity
5. Use ..Default::default() with #[allow(clippy::needless_update)] for model struct updates
6. Use ResourceExt to extract resource name/version from secret IDs
7. Reuse clients — SecretClient is thread-safe; create once, share across tasks
8. Run cargo clippy -- -D warnings when the prompt, eval, or CI expects lint-clean output

Reference Links