# Defender Endpoint

> Deep expertise in Defender Endpoint operations with deterministic runbooks, fail-fast context validation, and redacted output requirements.

- Skill: `thelobbi/defender-endpoint` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add thelobbi/defender-endpoint`
- Raw SKILL.md: https://api.skillmd.com/api/skills/thelobbi/defender-endpoint/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: thelobbi (https://skillmd.com/u/thelobbi)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/thelobbi/defender-endpoint

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# Defender Endpoint

## Integration Context Contract
- Canonical contract: [`docs/integration-context.md`](../../../docs/integration-context.md)

| Workflow | tenantId | subscriptionId | environmentCloud | principalType | scopesOrRoles |
|---|---|---|---|---|---|
| Defender Endpoint operations | required | optional | `AzureCloud`* | service-principal or delegated-user | `SecurityAlert.Read.All`, `SecurityIncident.Read.All`, `ThreatHunting.Read.All`, `Machine.Isolate` |

* Use sovereign cloud values from the canonical contract when applicable.

Fail fast before API calls when required context is missing or malformed. Redact tenant, subscription, and object identifiers.

## Command Surface

| Command | Purpose |
|---|---|
| `defender-endpoint-setup` | Deterministic workflow for defender endpoint setup. |
| `defender-endpoint-triage` | Deterministic workflow for defender endpoint triage. |
| `defender-endpoint-isolate-machine` | Deterministic workflow for defender endpoint isolate machine. |
| `defender-endpoint-live-response-metadata` | Deterministic workflow for defender endpoint live response metadata. |
| `defender-endpoint-evidence-summary` | Deterministic workflow for defender endpoint evidence summary. |

## Guardrails

1. Validate context schema and minimum grants before any API call.
2. Run read-only discovery first whenever possible.
3. Require explicit confirmation for destructive actions.
4. Re-query and verify post-action state.
5. Return structured, redacted output.

## Progressive Disclosure - Reference Files

| Topic | File |
|---|---|
| Endpoint and permission reference | [`references/api-reference.md`](./references/api-reference.md) |