Microsoft Defender Machines API
Manage devices (machines) that have communicated with Microsoft Defender for Endpoint. Retrieve device information, health status, risk scores, and exposure levels.
Microsoft Defender Machines API is one of 9 APIs that Microsoft Defender publishes on the APIs.io network, described by a machine-readable OpenAPI specification.
This API exposes 1 JSON Schema definition.
Tagged areas include Machines. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, a JSON-LD context, authentication docs, pricing, an API reference, and 1 JSON Schema.
This API exposes 5 operations across 5 paths, and defines 8 schemas. It is described by OpenAPI 3.2.0, at version 1.0.0.
Requests are made against 5 base URLs: https://api.security.microsoft.com/api, https://us.api.security.microsoft.com/api, https://eu.api.security.microsoft.com/api, https://uk.api.security.microsoft.com/api, https://au.api.security.microsoft.com/api.
Metadata
The identity and technical contract details declared by the specification.
Authentication & Security 1
Microsoft Defender Machines API declares
1 security scheme
for authenticating requests.
It supports OAuth 2.0 (oauth2) using the clientCredentials and authorizationCode flows, exposing 1 scope.
By default, every request must be authenticated.
oauth2— OAuth 2.0 authentication using Microsoft Entra ID (Azure AD). Supports both application-level and delegated permissions.
Paths & Operations 5
Across 5 paths, the API surfaces 5 operations — 5 GET. Each is listed below with its method, path, parameters, and response codes.
Manage devices (machines) that have communicated with Microsoft Defender for Endpoint. Retrieve device information, health status, risk scores, and exposure levels.
Schemas 8
The contract defines 8 schemas that model the data the API accepts and returns. The most detailed are Alert (29 properties), AlertEvidence (25 properties), Machine (21 properties), Vulnerability (17 properties). Each schema is shown below with its type and property counts.
Specification
The full machine-readable OpenAPI contract behind this narrative.
Source
More from Microsoft Defender 8
Other APIs Microsoft Defender publishes across the network.
This is an independent, third-party profile of Microsoft Defender Machines API, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.
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