Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add vinayaklatthe/microsoft-security-skills --skill defender-for-endpointgit clone --depth 1 https://github.com/vinayaklatthe/microsoft-security-skillsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/vinayaklatthe/microsoft-security-skills/defender-for-endpoint)<a href="https://agentmods.dev/skills/vinayaklatthe/microsoft-security-skills/defender-for-endpoint"><img src="https://agentmods.dev/badge/skills/vinayaklatthe/microsoft-security-skills/defender-for-endpoint/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/vinayaklatthe/microsoft-security-skills/defender-for-endpoint"><img src="https://agentmods.dev/badge/skills/vinayaklatthe/microsoft-security-skills/defender-for-endpoint.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00227 | $0.02215 |
| Opus 5 | $0.00113 | $0.01107 |
| Sonnet 5 | $0.00045 | $0.00443 |
| Haiku 4.5 | $0.00023 | $0.00221 |
Grade A, and why
defender-for-endpoint scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 12d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 142 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Microsoft Defender for Endpoint
Microsoft Defender for Endpoint (MDE) is the enterprise endpoint security platform providing prevention (next-gen AV, ASR), detection and response (EDR), threat & vulnerability management (Defender Vulnerability Management), and automated investigation and remediation (AIR). It feeds the endpoint pillar of Defender XDR.
When to use
Protecting Windows, macOS, Linux, iOS, and Android endpoints. This is the right skill for onboarding decisions, policy design, ASR rollout, EDR tuning, and response action scoping.
Do not use this skill for cross-workload investigation (defender-xdr), Azure resource
hardening (defender-for-cloud-hardening), or identity-side detection (defender-for-identity).
Pick the plan and the onboarding path
| If you need... | Plan / SKU | Notes |
|---|---|---|
| Next-gen AV, ASR, web/network protection, manual response | MDE Plan 1 | Bundled with M365 E3 since 2022 |
| EDR, AIR, advanced hunting, custom detections, Threat & Vuln Management | MDE Plan 2 | Bundled with M365 E5 / MDE P2 |
| Full vulnerability remediation workflows, browser extension assessments | Defender Vulnerability Management add-on | Adds to P2 |
| Server endpoints (Windows / Linux) | MDE for Servers via Defender for Cloud | Per-server billing, includes MDE P2 |
| Estate | Preferred onboarding path |
|---|---|
| Cloud-managed Windows (Intune-managed) | Intune + Security Settings Management |
| Co-managed (MECM + Intune) | Configuration Manager workload slider, then move to Intune |
| AD-joined only, no MDM | GPO onboarding script |
| Server (Windows/Linux) | Defender for Cloud auto-provisioning |
| macOS / Linux workstations | Intune with MDM enrollment |
| Air-gapped / one-off | Local script (90-day expiry) |
Rule of thumb: if a device exists in Intune, onboard via Intune Security Settings Management - one place to manage AV + ASR + EDR. GPO is the legacy fallback, not the default for new builds.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 12d ago First seen · 142 lines · 227 tokens per session scan A 39852170c0f1
defender-for-endpoint is a skill published in the GitHub repository vinayaklatthe/microsoft-security-skills (173 stars, last pushed 2mo ago), licensed MIT. It adds 227 tokens to every session and 2,215 once invoked, about $0.0011 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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