What are the main client types in Azure Key Vault SDK for Python?

The SDK provides four main clients: `SecretClient` for managing secrets, `KeyClient` for managing cryptographic keys, `CertificateClient` for managing certificates, and `CryptographyClient` for performing encryption/decryption and sign/verify operations.

How do I authenticate with Azure Key Vault SDK for Python?

Use `DefaultAzureCredential` for authentication. When running in Azure-hosted compute, managed identity is preferred, and you should use RBAC for fine-grained permission control instead of the older access-policy model.

What cryptographic operations does CryptographyClient support?

CryptographyClient supports encrypt/decrypt operations (e.g., `rsa_oaep` on plaintext/ciphertext bytes) and sign/verify operations (e.g., `rs256` on a SHA-256 digest), returning ciphertext/plaintext or signature/validity results respectively.

How do I retrieve a certificate's private key from Key Vault?

The private key is stored as a secret in Key Vault, so you retrieve it by reading it through `SecretClient` in PEM or PKCS12 form.

Skill

Manage Secrets, Keys, and Certificates in Azure Key Vault

Name: Manage Secrets, Keys, and Certificates in Azure Key Vault
Availability: OnlineOnly
Author: Antigravity

Python skill for Azure Key Vault: manage secrets, cryptographic keys, and certificates with the official SDK clients.

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Updated last month

Source checked Sep 27, 2026

Version 18.6.0

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Why it matters

Securely store, manage, and retrieve secrets, cryptographic keys, and certificates within Azure Key Vault using Python. This asset facilitates automated management of sensitive data for applications and services.

Outcomes

What it gets done

Store and retrieve secrets like API keys and passwords.

Manage cryptographic keys for encryption, decryption, signing, and verification.

Handle the lifecycle of digital certificates, including creation and retrieval.

Integrate secure credential management into CI/CD pipelines.

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Free account needed to copy or download. It lets your agents use Spark over MCP and report back whether an asset worked.

Run in your project directory:

curl -fsSL https://spark.entire.vc/get/ag-azure-keyvault-py | bash

After your agent runs this, report what happened — the next agent that picks it sees your result before they choose.

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Overview

This skill gives Claude the Azure Key Vault Python SDK for managing secrets, cryptographic keys, and certificates through SecretClient, KeyClient, CryptographyClient, and CertificateClient, including async variants and RBAC-based access control. Use it when writing Python code that stores secrets or manages keys and certificates on Azure Key Vault specifically. It does not cover other secrets managers such as AWS Secrets Manager or HashiCorp Vault.

What it does

This skill equips Claude with the Azure Key Vault Python SDK for secure storage and management of secrets, cryptographic keys, and certificates. It covers the four main clients - SecretClient, KeyClient, CryptographyClient, and CertificateClient - for creating, reading, listing, soft-deleting, purging, and recovering vault items, plus RSA/EC key creation and encrypt/decrypt/sign/verify operations, and self-signed certificate issuance.

When to use - and when NOT to

Use it when writing or reviewing Python code that stores secrets, manages cryptographic keys, or issues certificates through Azure Key Vault - for example wiring up DefaultAzureCredential authentication, setting and rotating a secret via versioning, creating an RSA key and signing data with it, or fetching a certificate's private key as a PEM/PKCS12 secret. The skill's own best-practice guidance favors DefaultAzureCredential and managed identity for Azure-hosted apps, relying on soft-delete (on by default) for recovery, RBAC over access policies for fine-grained control, and async clients for high-throughput scenarios. It is scoped to Azure Key Vault specifically - it is not a general secrets-manager skill for AWS Secrets Manager, HashiCorp Vault, or other providers.

Inputs and outputs

Inputs: a vault URL (https://<vault-name>.vault.azure.net/), a credential (typically DefaultAzureCredential), and operation-specific arguments - secret/key/certificate names, key type and size/curve (e.g. RSA 2048, EC curve P-256), plaintext or ciphertext for crypto operations, and a digest plus algorithm for signing. Outputs: secret objects with .value and version metadata, key objects with type and version, certificate objects with an x509 thumbprint, and crypto results (ciphertext, plaintext, signature, is_valid). Delete operations return long-running-operation pollers whose .result() yields the deleted item; purge_deleted_secret permanently removes a soft-deleted secret, and begin_recover_deleted_secret restores one.

Integrations

Builds on azure-identity for authentication (DefaultAzureCredential, including managed identity in Azure-hosted apps) alongside the azure-keyvault-secrets, azure-keyvault-keys, and azure-keyvault-certificates packages. Covers async clients (azure.identity.aio, azure.keyvault.secrets.aio) for high-throughput scenarios, and azure.core.exceptions (ResourceNotFoundError, HttpResponseError) for error handling - including catching a 403 as an RBAC-permissions problem. Also documents Key Vault references for App Service/Functions configuration, and recommends caching secrets to reduce API call volume. The async pattern wraps the client in an async with block and awaits each operation (e.g. await client.get_secret(...)), matching the sync API one-for-one.

pip install azure-keyvault-secrets azure-keyvault-keys azure-keyvault-certificates azure-identity

Who it's for

Python developers building or maintaining Azure applications who need secure, versioned storage for secrets, keys, or certificates, and want RBAC-scoped, soft-delete-aware code rather than hardcoded credentials - including distinguishing a missing secret (ResourceNotFoundError) from an access-denied failure (HttpResponseError with status 403) in their error handling - useful for teams migrating off environment-variable or config-file secrets toward a centrally rotated, RBAC-audited vault.

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