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Mixed Reality MCP Server

The Mixed Reality Spatial Anchors API, provided by Microsoft under the Microsoft.

Quick Start Summary

The Mixed Reality MCP server is a Model Context Protocol bridge that connects AI assistants — including Claude Desktop, Cursor, Windsurf, and VS Code Copilot — to the Mixed Reality API through natural language. It exposes 8 API endpoints as callable tools, such as SpatialAnchorsAccounts_ListBySubscription, SpatialAnchorsAccounts_ListByResourceGroup, SpatialAnchorsAccounts_Get, and more. No authentication is required — setup takes approximately 30 seconds. The server uses STDIO transport and can be installed by running npx -y @mcp/azure-com-mixedreality-spatial-anchors. This integration is sourced from the auto Mixed Reality OpenAPI specification (v2019-12-02-preview) and has a quality score of 34/99 (fair documentation coverage).

8Endpointstools mapped
NoneAuthopen access
34/99Qualityfair
~30 secSetupno auth

Server Details

Category
Developer Tools
Authentication
None
Endpoints
8 operations
Transport
STDIO
Spec Version
v2019-12-02-preview
Install Command
npx -y @mcp/azure-com-mixedreality-spatial-anchors

Environment Variables

MIXED_REALITY_API_KEY

Example: your_mixed_reality_api_key

Top Endpoints

GET
/subscriptions/{subscriptionId}/providers/Microsoft.MixedReality/spatialAnchorsAccounts

SpatialAnchorsAccounts_ListBySubscription

GET
/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.MixedReality/spatialAnchorsAccounts

SpatialAnchorsAccounts_ListByResourceGroup

GET
/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.MixedReality/spatialAnchorsAccounts/{accountName}

SpatialAnchorsAccounts_Get

PUT
/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.MixedReality/spatialAnchorsAccounts/{accountName}

SpatialAnchorsAccounts_Create

DELETE
/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.MixedReality/spatialAnchorsAccounts/{accountName}

SpatialAnchorsAccounts_Delete

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📖 Detailed MCP Integration Guide

A technical breakdown of capabilities, agent workflows, and security/configuration best practices.

Capabilities & Use Cases
The Mixed Reality Spatial Anchors API, provided by Microsoft under the Microsoft.MixedReality resource provider, is a foundational service for developing immersive mixed reality applications that require persistent, shared, and real-world spatial understanding. At its core, this API enables the programmatic management of Spatial Anchors Accounts, which are cloud-based resources responsible for creating, storing, and resolving spatial anchors. Spatial anchors are precise, coordinate-system-anchored points in the physical world that remain stable across sessions and devices. This API provides full lifecycle management for these accounts, allowing developers and platform administrators to create new accounts, configure their properties, retrieve access keys, and deprovision resources when no longer needed. Its primary use cases span enterprise and consumer domains: in enterprise, it powers solutions for remote assistance where a field technician can place a digital annotation on a physical asset for a remote expert to see, or for collaborative design where multiple engineers interact with a shared 3D model anchored to a factory floor. In consumer scenarios, it underpins immersive gaming with persistent virtual objects in a user's living room or location-based augmented reality experiences in museums or retail spaces.
🤖AI Agent Value
When this API is exposed as a set of tools to an AI coding assistant through the Model Context Protocol (MCP), it transforms the assistant from a code generator into an active participant in the cloud resource lifecycle management process. The value is substantial: instead of the developer manually writing boilerplate Azure Resource Manager (ARM) templates, CLI commands, or SDK calls to provision infrastructure, they can delegate these operational tasks conversationally. The AI assistant, equipped with MCP server tools wrapping these endpoints, gains the ability to directly interact with the Azure control plane to audit, create, or modify the spatial anchor infrastructure that underpins the mixed reality application being developed. This bridges the gap between the application code the developer is writing and the cloud dependencies it requires, enabling a more fluid, context-aware development workflow where the AI can ensure the necessary backend resources exist and are correctly configured for the application's specific needs.
💬Example Workflows
Practical workflows enabled by this integration are both dynamic and efficient. A developer could instruct the AI agent: "Query all existing Spatial Anchors Accounts in the 'mr-prod-001' resource group to ensure we have a dedicated account for the new collaborative assembly project." The AI would use the GET endpoints to retrieve and summarize the account list. Following that, a command like, "Create a new Spatial Anchors Account named 'assembly-collab-west' in that resource group with a tag for project 'AssemblyVision'," would trigger the PUT endpoint, automating the provisioning. For security rotation, a developer might say, "Generate new access keys for the 'assembly-collab-west' account," prompting the AI to use the POST /keys endpoint and present the new credentials for secure storage. Furthermore, the agent could perform lifecycle management tasks such as, "Delete the staging account 'assembly-test-east' that is no longer needed," using the DELETE endpoint to clean up resources and prevent unnecessary costs, or "Patch the tags on 'assembly-collab-west' to add a cost center," executing a PATCH operation for metadata updates.
🛡️Security & Auth
Critical to the implementation of this MCP server are robust security and authentication practices. While the API schema itself notes "None" for authentication, this refers to the API definition layer; in practice, all requests to these Azure Resource Manager endpoints must be authenticated and authorized using Azure Active Directory (Azure AD) tokens. The MCP server tooling must be configured with an Azure AD service principal or user identity possessing the appropriate Role-Based Access Control (RBAC) permissions, typically the "Contributor" or a custom role scoped to the specific resource group, adhering to the principle of least privilege. Developers must ensure that any API keys retrieved via the /keys endpoints are handled with extreme care, never logged in plain text, and stored securely in a secrets management system like Azure Key Vault. Configuration should involve setting environment variables for subscription IDs and resource groups, and the MCP server should implement strict input validation to prevent injection attacks. It is imperative that the server does not grant broad, tenant-wide permissions but is instead meticulously scoped to only the resources essential for the defined task set.

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