/entra-agent-id

name: entra-agent-id
description: "Provision Microsoft Entra Agent Identity Blueprints, BlueprintPrincipals, and per-instance Agent Identities via Microsoft Graph, and configure OAuth 2.0 token exchange (fmi_path, OBO, cross-tenant) including the Microsoft Entra SDK for AgentID sidecar. USE FOR: Agent Identity Blueprint, BlueprintPrincipal, agent OAuth, fmi_path token exchange, agent OBO, Workload Identity Federation for agents, polyglot agent auth, Microsoft.Identity.Web.AgentIdentities. DO NOT USE FOR: standard Entra app registration (use entra-app-registration), Microsoft Foundry agent authoring (use microsoft-foundry)."
license: MIT
metadata:
  author: Microsoft
  version: "0.0.0-placeholder"

Microsoft Entra Agent ID

Create and manage OAuth 2.0-capable identities for AI agents using Microsoft Graph. Every agent instance gets a distinct identity, audit trail, and independently-scoped permission grants.

Quick Reference

| Property | Value | |----------|-------| | Service | Microsoft Entra Agent ID | | API | Microsoft Graph (`https://graph.microsoft.com/v1.0`) | | Required role | Agent Identity Developer, Agent Identity Administrator, or Application Administrator | | Object model | Blueprint (application) → BlueprintPrincipal (SP) → Agent Identity (SP) | | Runtime exchange | Two-step `fmi_path` exchange (autonomous and OBO) | | .NET helper | `Microsoft.Identity.Web.AgentIdentities` | | Polyglot helper | Microsoft Entra SDK for AgentID (sidecar container) |

When to Use This Skill

• Provisioning a new Agent Identity Blueprint and BlueprintPrincipal
• Creating per-instance Agent Identities under a Blueprint
• Configuring credentials (FIC, Managed Identity, or client secret) on the Blueprint
• Implementing the two-step `fmi_path` runtime token exchange (autonomous or OBO)
• Cross-tenant agent token flows
• Deploying the Microsoft Entra SDK for AgentID sidecar for polyglot agents (Python, Node, Go, Java)
• Granting per-Agent-Identity application (`appRoleAssignments`) or delegated (`oauth2PermissionGrants`) permissions
• Diagnosing Agent ID errors such as `AADSTS82001`, `AADSTS700211`, or `PropertyNotCompatibleWithAgentIdentity`

MCP Tools

| Tool | Use | |------|-----| | `mcp_azure_mcp_documentation` | Search Microsoft Learn for current Agent ID setup, Graph API shapes, and SDK configuration |

There is no dedicated Agent Identity MCP server today. This skill guides direct Microsoft Graph API calls (PowerShell or Python `requests`). Use `mcp_azure_mcp_documentation` to verify request bodies and endpoints against current docs before running.

Before You Start

Use the `mcp_azure_mcp_documentation` tool to search Microsoft Learn for current Agent ID documentation:

• "Microsoft Entra Agent ID setup instructions"
• "Microsoft Entra SDK for AgentID"

Verify request bodies and endpoints against the installed SDK version — Graph API shapes evolve.

Conceptual Model

Agent Identity Blueprint (application)         ← one per agent type/project
  └── BlueprintPrincipal (service principal)    ← MUST be created explicitly
        ├── Agent Identity (SP): agent-1        ← one per agent instance
        ├── Agent Identity (SP): agent-2
        └── Agent Identity (SP): agent-3

| Concept | Description | |---------|-------------| | **Blueprint** | Application object that defines a type/class of agent. Holds credentials (secret, certificate, federated identity). | | **BlueprintPrincipal** | Service principal for the Blueprint in the tenant. Not auto-created. | | **Agent Identity** | Service-principal-only identity for a single agent instance. Cannot hold its own credentials. | | **Sponsor** | A User (or Group, for Agent Identity) who is responsible for the identity. Required on creation. |

Prerequisites

Required Entra Roles

One of: **Agent Identity Developer**, **Agent Identity Administrator**, or **Application Administrator**.

PowerShell (interactive setup)

# PowerShell 7+
Install-Module Microsoft.Graph.Applications -Scope CurrentUser -Force

Python (programmatic provisioning)

pip install azure-identity requests

Authentication

> **`DefaultAzureCredential` is not supported.** Azure CLI tokens carry `Directory.AccessAsUser.All`, which Agent Identity APIs hard-reject (403). Use a dedicated app registration with `client_credentials`, or `Connect-MgGraph` with explicit delegated scopes.

PowerShell (delegated)

Connect-MgGraph -Scopes @(
    "AgentIdentityBlueprint.Create",
    "AgentIdentityBlueprint.ReadWrite.All",
    "AgentIdentityBlueprintPrincipal.Create",
    "AgentIdentity.Create.All",
    "User.Read"
)

Python (application)

import os, requests
from azure.identity import ClientSecretCredential

credential = ClientSecretCredential(
    tenant_id=os.environ["AZURE_TENANT_ID"],
    client_id=os.environ["AZURE_CLIENT_ID"],
    client_secret=os.environ["AZURE_CLIENT_SECRET"],
)
token = credential.get_token("https://graph.microsoft.com/.default")

GRAPH = "https://graph.microsoft.com/v1.0"
headers = {
    "Authorization": f"Bearer {token.token}",
    "Content-Type": "application/json",
    "OData-Version": "4.0",
}

Core Workflow

Step 1: Create Agent Identity Blueprint

Use the typed endpoint. Sponsors must be **Users** at Blueprint creation. This snippet assumes the `requests` client and `headers` dict from the Python authentication block above.

import subprocess
import requests

user_id = subprocess.run(
    ["az", "ad", "signed-in-user", "show", "--query", "id", "-o", "tsv"],
    capture_output=True, text=True, check=True,
).stdout.strip()

blueprint_body = {
    "displayName": "My Agent Blueprint",
    "sponsors@odata.bind": [
        f"https://graph.microsoft.com/v1.0/users/{user_id}"
    ],
}
resp = requests.post(
    f"{GRAPH}/applications/microsoft.graph.agentIdentityBlueprint",
    headers=headers, json=blueprint_body,
)
resp.raise_for_status()

blue