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-serversgit 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-servers)<a href="https://agentmods.dev/skills/vinayaklatthe/microsoft-security-skills/defender-for-servers"><img src="https://agentmods.dev/badge/skills/vinayaklatthe/microsoft-security-skills/defender-for-servers/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-servers"><img src="https://agentmods.dev/badge/skills/vinayaklatthe/microsoft-security-skills/defender-for-servers.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 | $0.00231 | $0.02134 |
| Opus 5 | $0.00115 | $0.01067 |
| Sonnet 5 | $0.00046 | $0.00427 |
| Haiku 4.5 | $0.00023 | $0.00213 |
Grade A, and why
defender-for-servers 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 — 137 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Microsoft Defender for Servers
Defender for Servers is the server-focused plan inside Microsoft Defender for Cloud. It extends Microsoft Defender for Endpoint (MDE) to Azure VMs, Azure Arc-enabled machines (on-prem, AWS EC2, GCP Compute), and VM Scale Sets, and adds server-specific controls: just-in-time VM access, file integrity monitoring, agentless disk scanning, and vulnerability assessment.
When to use
Designing or hardening protection for server workloads — IaaS VMs, hybrid/multicloud servers via Arc, jump hosts, domain controllers, line-of-business servers. Use this skill for plan selection, MDE-for-Servers onboarding, FIM, JIT, and agentless vs agent-based scanning trade-offs.
Do not use this skill for client endpoints (defender-for-endpoint), AKS/container hosts
(defender-for-containers), Azure storage accounts (defender-for-storage), or generic
Defender for Cloud posture (defender-for-cloud-hardening).
Pick the plan
| If you need... | Plan |
|---|---|
| Free foundational CSPM only (no server EDR) | Defender CSPM (no server plan) |
| MDE Plan 2 EDR, threat detection, free 500 MB/day Log Analytics ingestion | Defender for Servers Plan 1 (per-server) |
| Everything in P1 plus FIM, JIT, agentless scanning, vuln assessment, adaptive app controls, network hardening, regulatory compliance, 500 MB free ingestion | Defender for Servers Plan 2 |
Rule of thumb: Plan 1 = "I just need EDR everywhere." Plan 2 = "I need EDR + posture + compliance + FIM." Most enterprises pick P2 for production, P1 for dev/test.
Onboarding paths
| Estate | Path |
|---|---|
| Azure VMs | Enable plan at subscription scope; auto-provisioning deploys MDE + Azure Monitor Agent |
| On-prem / VMware servers | Azure Arc onboarding, then enable plan |
| AWS EC2 / GCP Compute | Connect AWS account / GCP project to Defender for Cloud; auto-provisioning via Arc |
| VMSS (uniform) | Plan applies; agentless scan covers ephemeral instances |
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 · 137 lines · 231 tokens per session scan A 39303ce8f7c5
defender-for-servers is a skill published in the GitHub repository vinayaklatthe/microsoft-security-skills (173 stars, last pushed 2mo ago), licensed MIT. It adds 231 tokens to every session and 2,134 once invoked, about $0.0012 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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