--- name: azure-identity-dotnet description: "Azure.Identity (.NET) workflow skill. Use this skill when the user needs Azure Identity SDK for .NET. Authentication library for Azure SDK clients using Microsoft Entra ID. Use for DefaultAzureCredential, managed identity, service principals, and developer credentials and the operator should preserve the upstream workflow, copied support files, and provenance before merging or handing off." version: "0.0.1" category: tools tags: ["azure-identity-dotnet", "azure", "identity", "sdk", "for", "net", "authentication", "library"] complexity: advanced risk: caution tools: ["codex-cli", "claude-code", "cursor", "gemini-cli", "opencode"] source: community author: "sickn33" date_added: "2026-04-15" date_updated: "2026-04-25" --- # Azure.Identity (.NET) ## Overview This public intake copy packages `plugins/antigravity-awesome-skills-claude/skills/azure-identity-dotnet` from `https://github.com/sickn33/antigravity-awesome-skills` into the native Omni Skills editorial shape without hiding its origin. Use it when the operator needs the upstream workflow, support files, and repository context to stay intact while the public validator and private enhancer continue their normal downstream flow. This intake keeps the copied upstream files intact and uses the `external_source` block in `metadata.json` plus `ORIGIN.md` as the provenance anchor for review. # Azure.Identity (.NET) Authentication library for Azure SDK clients using Microsoft Entra ID (formerly Azure AD). Imported source sections that did not map cleanly to the public headings are still preserved below or in the support files. Notable imported sections: Environment Variables, DefaultAzureCredential, Credential Types, Environment-Based Configuration, Sovereign Clouds, Error Handling. ## When to Use This Skill Use this section as the trigger filter. It should make the activation boundary explicit before the operator loads files, runs commands, or opens a pull request. - This skill is applicable to execute the workflow or actions described in the overview. - Use when the request clearly matches the imported source intent: Azure Identity SDK for .NET. Authentication library for Azure SDK clients using Microsoft Entra ID. Use for DefaultAzureCredential, managed identity, service principals, and developer credentials. - Use when the operator should preserve upstream workflow detail instead of rewriting the process from scratch. - Use when provenance needs to stay visible in the answer, PR, or review packet. - Use when copied upstream references, examples, or scripts materially improve the answer. - Use when the workflow should remain reviewable in the public intake repo before the private enhancer takes over. ## Operating Table | Situation | Start here | Why it matters | | --- | --- | --- | | First-time use | `metadata.json` | Confirms repository, branch, commit, and imported path through the `external_source` block before touching the copied workflow | | Provenance review | `ORIGIN.md` | Gives reviewers a plain-language audit trail for the imported source | | Workflow execution | `SKILL.md` | Starts with the smallest copied file that materially changes execution | | Supporting context | `SKILL.md` | Adds the next most relevant copied source file without loading the entire package | | Handoff decision | `## Related Skills` | Helps the operator switch to a stronger native skill when the task drifts | ## Workflow This workflow is intentionally editorial and operational at the same time. It keeps the imported source useful to the operator while still satisfying the public intake standards that feed the downstream enhancer flow. 1. bash dotnet add package Azure.Identity # For ASP.NET Core dotnet add package Microsoft.Extensions.Azure # For brokered authentication (Windows) dotnet add package Azure.Identity.Broker Current Versions: Stable v1.17.1, Preview v1.18.0-beta.2 2. Confirm the user goal, the scope of the imported workflow, and whether this skill is still the right router for the task. 3. Read the overview and provenance files before loading any copied upstream support files. 4. Load only the references, examples, prompts, or scripts that materially change the outcome for the current request. 5. Execute the upstream workflow while keeping provenance and source boundaries explicit in the working notes. 6. Validate the result against the upstream expectations and the evidence you can point to in the copied files. 7. Escalate or hand off to a related skill when the work moves out of this imported workflow's center of gravity. ### Imported Workflow Notes #### Imported: Installation ```bash dotnet add package Azure.Identity # For ASP.NET Core dotnet add package Microsoft.Extensions.Azure # For brokered authentication (Windows) dotnet add package Azure.Identity.Broker ``` **Current Versions**: Stable v1.17.1, Preview v1.18.0-beta.2 #### Imported: Environment Variables ### Service Principal with Secret ```bash AZURE_CLIENT_ID= AZURE_TENANT_ID= AZURE_CLIENT_SECRET= ``` ### Service Principal with Certificate ```bash AZURE_CLIENT_ID= AZURE_TENANT_ID= AZURE_CLIENT_CERTIFICATE_PATH= AZURE_CLIENT_CERTIFICATE_PASSWORD= # Optional ``` ### Managed Identity ```bash AZURE_CLIENT_ID= # Only for user-assigned ``` ## Examples ### Example 1: Ask for the upstream workflow directly ```text Use @azure-identity-dotnet to handle . Start from the copied upstream workflow, load only the files that change the outcome, and keep provenance visible in the answer. ``` **Explanation:** This is the safest starting point when the operator needs the imported workflow, but not the entire repository. ### Example 2: Ask for a provenance-grounded review ```text Review @azure-identity-dotnet against metadata.json and ORIGIN.md, then explain which copied upstream files you would load first and why. ``` **Explanation:** Use this before review or troubleshooting when you need a precise, auditable explanation of origin and file selection. ### Example 3: Narrow the copied support files before execution ```text Use @azure-identity-dotnet for . Load only the copied references, examples, or scripts that change the outcome, and name the files explicitly before proceeding. ``` **Explanation:** This keeps the skill aligned with progressive disclosure instead of loading the whole copied package by default. ### Example 4: Build a reviewer packet ```text Review @azure-identity-dotnet using the copied upstream files plus provenance, then summarize any gaps before merge. ``` **Explanation:** This is useful when the PR is waiting for human review and you want a repeatable audit packet. ## Best Practices Treat the generated public skill as a reviewable packaging layer around the upstream repository. The goal is to keep provenance explicit and load only the copied source material that materially improves execution. - Use Deterministic Credentials in Production `csharp // Development var devCredential = new DefaultAzureCredential(); // Production - use specific credential var prodCredential = new ManagedIdentityCredential(""); ### 2. - Reuse Credential Instances csharp // Good: Single credential instance shared across clients var credential = new DefaultAzureCredential(); var blobClient = new BlobServiceClient(blobUri, credential); var secretClient = new SecretClient(vaultUri, credential); ### 3. - Configure Retry Policies csharp var options = new ManagedIdentityCredentialOptions( ManagedIdentityId.FromUserAssignedClientId(clientId)) { Retry = { MaxRetries = 3, Delay = TimeSpan.FromSeconds(0.5), } }; var credential = new ManagedIdentityCredential(options); ### 4. - Enable Logging for Debugging csharp using Azure.Core.Diagnostics; using AzureEventSourceListener listener = new((args, message) => { if (args is { EventSource.Name: "Azure-Identity" }) { Console.WriteLine(message); } }, EventLevel.LogAlways); ` - Keep the imported skill grounded in the upstream repository; do not invent steps that the source material cannot support. - Prefer the smallest useful set of support files so the workflow stays auditable and fast to review. - Keep provenance, source commit, and imported file paths visible in notes and PR descriptions. ### Imported Operating Notes #### Imported: Best Practices ### 1. Use Deterministic Credentials in Production ```csharp // Development var devCredential = new DefaultAzureCredential(); // Production - use specific credential var prodCredential = new ManagedIdentityCredential(""); ``` ### 2. Reuse Credential Instances ```csharp // Good: Single credential instance shared across clients var credential = new DefaultAzureCredential(); var blobClient = new BlobServiceClient(blobUri, credential); var secretClient = new SecretClient(vaultUri, credential); ``` ### 3. Configure Retry Policies ```csharp var options = new ManagedIdentityCredentialOptions( ManagedIdentityId.FromUserAssignedClientId(clientId)) { Retry = { MaxRetries = 3, Delay = TimeSpan.FromSeconds(0.5), } }; var credential = new ManagedIdentityCredential(options); ``` ### 4. Enable Logging for Debugging ```csharp using Azure.Core.Diagnostics; using AzureEventSourceListener listener = new((args, message) => { if (args is { EventSource.Name: "Azure-Identity" }) { Console.WriteLine(message); } }, EventLevel.LogAlways); ``` ## Troubleshooting ### Problem: The operator skipped the imported context and answered too generically **Symptoms:** The result ignores the upstream workflow in `plugins/antigravity-awesome-skills-claude/skills/azure-identity-dotnet`, fails to mention provenance, or does not use any copied source files at all. **Solution:** Re-open `metadata.json`, `ORIGIN.md`, and the most relevant copied upstream files. Check the `external_source` block first, then restate the provenance before continuing. ### Problem: The imported workflow feels incomplete during review **Symptoms:** Reviewers can see the generated `SKILL.md`, but they cannot quickly tell which references, examples, or scripts matter for the current task. **Solution:** Point at the exact copied references, examples, scripts, or assets that justify the path you took. If the gap is still real, record it in the PR instead of hiding it. ### Problem: The task drifted into a different specialization **Symptoms:** The imported skill starts in the right place, but the work turns into debugging, architecture, design, security, or release orchestration that a native skill handles better. **Solution:** Use the related skills section to hand off deliberately. Keep the imported provenance visible so the next skill inherits the right context instead of starting blind. ## Related Skills - `@00-andruia-consultant` - Use when the work is better handled by that native specialization after this imported skill establishes context. - `@00-andruia-consultant-v2` - Use when the work is better handled by that native specialization after this imported skill establishes context. - `@10-andruia-skill-smith` - Use when the work is better handled by that native specialization after this imported skill establishes context. - `@10-andruia-skill-smith-v2` - Use when the work is better handled by that native specialization after this imported skill establishes context. ## Additional Resources Use this support matrix and the linked files below as the operator packet for this imported skill. They should reflect real copied source material, not generic scaffolding. | Resource family | What it gives the reviewer | Example path | | --- | --- | --- | | `references` | copied reference notes, guides, or background material from upstream | `references/n/a` | | `examples` | worked examples or reusable prompts copied from upstream | `examples/n/a` | | `scripts` | upstream helper scripts that change execution or validation | `scripts/n/a` | | `agents` | routing or delegation notes that are genuinely part of the imported package | `agents/n/a` | | `assets` | supporting assets or schemas copied from the source package | `assets/n/a` | ### Imported Reference Notes #### Imported: Credential Types Reference | Category | Credential | Purpose | |----------|------------|---------| | **Chains** | `DefaultAzureCredential` | Preconfigured chain for dev-to-prod | | | `ChainedTokenCredential` | Custom credential chain | | **Azure-Hosted** | `ManagedIdentityCredential` | Azure managed identity | | | `WorkloadIdentityCredential` | Kubernetes workload identity | | | `EnvironmentCredential` | Environment variables | | **Service Principal** | `ClientSecretCredential` | Client ID + secret | | | `ClientCertificateCredential` | Client ID + certificate | | | `ClientAssertionCredential` | Signed client assertion | | **User** | `InteractiveBrowserCredential` | Browser-based auth | | | `DeviceCodeCredential` | Device code flow | | | `OnBehalfOfCredential` | Delegated identity | | **Developer** | `AzureCliCredential` | Azure CLI | | | `AzurePowerShellCredential` | Azure PowerShell | | | `AzureDeveloperCliCredential` | Azure Developer CLI | | | `VisualStudioCredential` | Visual Studio | #### Imported: Reference Links | Resource | URL | |----------|-----| | NuGet Package | https://www.nuget.org/packages/Azure.Identity | | API Reference | https://learn.microsoft.com/dotnet/api/azure.identity | | Credential Chains | https://learn.microsoft.com/dotnet/azure/sdk/authentication/credential-chains | | Best Practices | https://learn.microsoft.com/dotnet/azure/sdk/authentication/best-practices | | GitHub Source | https://github.com/Azure/azure-sdk-for-net/tree/main/sdk/identity/Azure.Identity | #### Imported: DefaultAzureCredential The recommended credential for most scenarios. Tries multiple authentication methods in order: | Order | Credential | Enabled by Default | |-------|------------|-------------------| | 1 | EnvironmentCredential | Yes | | 2 | WorkloadIdentityCredential | Yes | | 3 | ManagedIdentityCredential | Yes | | 4 | VisualStudioCredential | Yes | | 5 | VisualStudioCodeCredential | Yes | | 6 | AzureCliCredential | Yes | | 7 | AzurePowerShellCredential | Yes | | 8 | AzureDeveloperCliCredential | Yes | | 9 | InteractiveBrowserCredential | **No** | ### Basic Usage ```csharp using Azure.Identity; using Azure.Storage.Blobs; var credential = new DefaultAzureCredential(); var blobClient = new BlobServiceClient( new Uri("https://myaccount.blob.core.windows.net"), credential); ``` ### ASP.NET Core with Dependency Injection ```csharp using Azure.Identity; using Microsoft.Extensions.Azure; builder.Services.AddAzureClients(clientBuilder => { clientBuilder.AddBlobServiceClient( new Uri("https://myaccount.blob.core.windows.net")); clientBuilder.AddSecretClient( new Uri("https://myvault.vault.azure.net")); // Uses DefaultAzureCredential by default clientBuilder.UseCredential(new DefaultAzureCredential()); }); ``` ### Customizing DefaultAzureCredential ```csharp var credential = new DefaultAzureCredential( new DefaultAzureCredentialOptions { ExcludeEnvironmentCredential = true, ExcludeManagedIdentityCredential = false, ExcludeVisualStudioCredential = false, ExcludeAzureCliCredential = false, ExcludeInteractiveBrowserCredential = false, // Enable interactive TenantId = "", ManagedIdentityClientId = "" }); ``` #### Imported: Credential Types ### ManagedIdentityCredential (Production) ```csharp // System-assigned managed identity var credential = new ManagedIdentityCredential(ManagedIdentityId.SystemAssigned); // User-assigned by client ID var credential = new ManagedIdentityCredential( ManagedIdentityId.FromUserAssignedClientId("")); // User-assigned by resource ID var credential = new ManagedIdentityCredential( ManagedIdentityId.FromUserAssignedResourceId("")); ``` ### ClientSecretCredential ```csharp var credential = new ClientSecretCredential( tenantId: "", clientId: "", clientSecret: ""); var client = new SecretClient( new Uri("https://myvault.vault.azure.net"), credential); ``` ### ClientCertificateCredential ```csharp var certificate = X509CertificateLoader.LoadCertificateFromFile("MyCertificate.pfx"); var credential = new ClientCertificateCredential( tenantId: "", clientId: "", certificate); ``` ### ChainedTokenCredential (Custom Chain) ```csharp var credential = new ChainedTokenCredential( new ManagedIdentityCredential(), new AzureCliCredential()); var client = new SecretClient( new Uri("https://myvault.vault.azure.net"), credential); ``` ### Developer Credentials ```csharp // Azure CLI var credential = new AzureCliCredential(); // Azure PowerShell var credential = new AzurePowerShellCredential(); // Azure Developer CLI (azd) var credential = new AzureDeveloperCliCredential(); // Visual Studio var credential = new VisualStudioCredential(); // Interactive Browser var credential = new InteractiveBrowserCredential(); ``` #### Imported: Environment-Based Configuration ```csharp // Production vs Development TokenCredential credential = builder.Environment.IsProduction() ? new ManagedIdentityCredential("") : new DefaultAzureCredential(); ``` #### Imported: Sovereign Clouds ```csharp var credential = new DefaultAzureCredential( new DefaultAzureCredentialOptions { AuthorityHost = AzureAuthorityHosts.AzureGovernment }); // Available authority hosts: // AzureAuthorityHosts.AzurePublicCloud (default) // AzureAuthorityHosts.AzureGovernment // AzureAuthorityHosts.AzureChina // AzureAuthorityHosts.AzureGermany ``` #### Imported: Error Handling ```csharp using Azure.Identity; using Azure.Security.KeyVault.Secrets; var client = new SecretClient( new Uri("https://myvault.vault.azure.net"), new DefaultAzureCredential()); try { KeyVaultSecret secret = await client.GetSecretAsync("secret1"); } catch (AuthenticationFailedException e) { Console.WriteLine($"Authentication Failed: {e.Message}"); } catch (CredentialUnavailableException e) { Console.WriteLine($"Credential Unavailable: {e.Message}"); } ``` #### Imported: Key Exceptions | Exception | Description | |-----------|-------------| | `AuthenticationFailedException` | Base exception for authentication errors | | `CredentialUnavailableException` | Credential cannot authenticate in current environment | | `AuthenticationRequiredException` | Interactive authentication is required | #### Imported: Managed Identity Support Supported Azure services: - Azure App Service and Azure Functions - Azure Arc - Azure Cloud Shell - Azure Kubernetes Service (AKS) - Azure Service Fabric - Azure Virtual Machines - Azure Virtual Machine Scale Sets #### Imported: Thread Safety All credential implementations are thread-safe. A single credential instance can be safely shared across multiple clients and threads. #### Imported: Limitations - Use this skill only when the task clearly matches the scope described above. - Do not treat the output as a substitute for environment-specific validation, testing, or expert review. - Stop and ask for clarification if required inputs, permissions, safety boundaries, or success criteria are missing.