Authenticate to Azure services using Azure Identity library for JavaScript (@azure/identity). Use when configuring authentication with DefaultAzureCredential, managed identity, service principals, or interactive browser login.
npx skills add https://github.com/microsoft/skills --skill azure-identity-ts
Authentication library for Azure SDK clients using Microsoft Entra ID.
npm install @azure/identity
# For Visual Studio Code credential support
npm install @azure/identity-vscode
AZURE_TENANT_ID=<tenant-id>
AZURE_CLIENT_ID=<client-id>
AZURE_CLIENT_SECRET=<client-secret>
AZURE_TOKEN_CREDENTIALS=prod # Required only if DefaultAzureCredential is used in production
AZURE_TENANT_ID=<tenant-id>
AZURE_CLIENT_ID=<client-id>
AZURE_CLIENT_CERTIFICATE_PATH=/path/to/cert.pem
AZURE_CLIENT_CERTIFICATE_PASSWORD=<optional-password>
AZURE_TENANT_ID=<tenant-id>
AZURE_CLIENT_ID=<client-id>
AZURE_FEDERATED_TOKEN_FILE=/var/run/secrets/tokens/azure-identity
import { DefaultAzureCredential, ManagedIdentityCredential } from "@azure/identity";
// Local dev: DefaultAzureCredential. Production: set AZURE_TOKEN_CREDENTIALS=prod or AZURE_TOKEN_CREDENTIALS=<specific_credential>
const credential = new DefaultAzureCredential({requiredEnvVars: ["AZURE_TOKEN_CREDENTIALS"]});
// Or use a specific credential directly in production:
// See https://learn.microsoft.com/javascript/api/overview/azure/identity-readme?view=azure-node-latest#credential-classes
// const credential = new ManagedIdentityCredential();
// Use with any Azure SDK client
import { BlobServiceClient } from "@azure/storage-blob";
const blobClient = new BlobServiceClient(
"https://<account>.blob.core.windows.net",
credential
);
See DefaultAzureCredential overview for the current credential chain order and defaults.
import { ManagedIdentityCredential } from "@azure/identity";
const credential = new ManagedIdentityCredential();
const credential = new ManagedIdentityCredential({
clientId: "<user-assigned-client-id>"
});
const credential = new ManagedIdentityCredential({
resourceId: "/subscriptions/<sub>/resourceGroups/<rg>/providers/Microsoft.ManagedIdentity/userAssignedIdentities/<name>"
});
const credential = new ManagedIdentityCredential({
objectId: "<user-assigned-object-id>"
});
import { ClientSecretCredential } from "@azure/identity";
const credential = new ClientSecretCredential(
"<tenant-id>",
"<client-id>",
"<client-secret>"
);
import { ClientCertificateCredential } from "@azure/identity";
const credential = new ClientCertificateCredential(
"<tenant-id>",
"<client-id>",
{ certificatePath: "/path/to/cert.pem" }
);
// With password
const credentialWithPwd = new ClientCertificateCredential(
"<tenant-id>",
"<client-id>",
{
certificatePath: "/path/to/cert.pem",
certificatePassword: "<password>"
}
);
import { InteractiveBrowserCredential } from "@azure/identity";
const credential = new InteractiveBrowserCredential({
clientId: "<client-id>",
tenantId: "<tenant-id>",
loginHint: "[email protected]"
});
import { DeviceCodeCredential } from "@azure/identity";
const credential = new DeviceCodeCredential({
clientId: "<client-id>",
tenantId: "<tenant-id>",
userPromptCallback: (info) => {
console.log(info.message);
// "To sign in, use a web browser to open..."
}
});
import {
ChainedTokenCredential,
ManagedIdentityCredential,
AzureCliCredential
} from "@azure/identity";
// Try managed identity first, fall back to CLI
const credential = new ChainedTokenCredential(
new ManagedIdentityCredential(),
new AzureCliCredential()
);
import { useIdentityPlugin, VisualStudioCodeCredential } from "@azure/identity";
import { vsCodePlugin } from "@azure/identity-vscode";
useIdentityPlugin(vsCodePlugin);
const credential = new VisualStudioCodeCredential();
import { AzureCliCredential } from "@azure/identity";
const credential = new AzureCliCredential();
// Uses: az login
import { AzureDeveloperCliCredential } from "@azure/identity";
const credential = new AzureDeveloperCliCredential();
// Uses: azd auth login
import { AzurePowerShellCredential } from "@azure/identity";
const credential = new AzurePowerShellCredential();
// Uses: Connect-AzAccount
import { ClientSecretCredential, AzureAuthorityHosts } from "@azure/identity";
// Azure Government
const credential = new ClientSecretCredential(
"<tenant>", "<client>", "<secret>",
{ authorityHost: AzureAuthorityHosts.AzureGovernment }
);
// Azure China
const credentialChina = new ClientSecretCredential(
"<tenant>", "<client>", "<secret>",
{ authorityHost: AzureAuthorityHosts.AzureChina }
);
import { DefaultAzureCredential, getBearerTokenProvider } from "@azure/identity";
const credential = new DefaultAzureCredential({requiredEnvVars: ["AZURE_TOKEN_CREDENTIALS"]});
// Create a function that returns tokens
const getAccessToken = getBearerTokenProvider(
credential,
"https://cognitiveservices.azure.com/.default"
);
// Use with APIs that need bearer tokens
const token = await getAccessToken();
import type {
TokenCredential,
AccessToken,
GetTokenOptions
} from "@azure/core-auth";
import {
DefaultAzureCredential,
DefaultAzureCredentialOptions,
ManagedIdentityCredential,
ClientSecretCredential,
ClientCertificateCredential,
InteractiveBrowserCredential,
ChainedTokenCredential,
AzureCliCredential,
AzurePowerShellCredential,
AzureDeveloperCliCredential,
DeviceCodeCredential,
AzureAuthorityHosts
} from "@azure/identity";
import type { TokenCredential, AccessToken, GetTokenOptions } from "@azure/core-auth";
class CustomCredential implements TokenCredential {
async getToken(
scopes: string | string[],
options?: GetTokenOptions
): Promise<AccessToken | null> {
// Custom token acquisition logic
return {
token: "<access-token>",
expiresOnTimestamp: Date.now() + 3600000
};
}
}
import { setLogLevel, AzureLogger } from "@azure/logger";
setLogLevel("verbose");
// Custom log handler
AzureLogger.log = (...args) => {
console.log("[Azure]", ...args);
};
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Take microsoft/azure-identity-ts from the repository into ~/.claude/skills for personal
use, or into .claude/skills inside a project.
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same name cannot sit side by side — one of them will be ignored.
The instructions reference npm.
Without those the skill loads but fails at the first command.