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 JustineDevs/premortem --skill network-pentestgit clone --depth 1 https://github.com/JustineDevs/premortemWrote 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/justinedevs/premortem/network-pentest)<a href="https://agentmods.dev/skills/justinedevs/premortem/network-pentest"><img src="https://agentmods.dev/badge/skills/justinedevs/premortem/network-pentest/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/justinedevs/premortem/network-pentest"><img src="https://agentmods.dev/badge/skills/justinedevs/premortem/network-pentest.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 | $0.00103 | $0.02611 |
| Opus 5 | $0.00051 | $0.01306 |
| Sonnet 5 | $0.00021 | $0.00522 |
| Haiku 4.5 | $0.00010 | $0.00261 |
Grade A, and why
network-pentest 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 9d 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 — 183 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Network Penetration Testing
STOP — Authorization check (read before any execution)
This skill executes offensive techniques against live infrastructure. Before any action:
- Confirm a written engagement letter / SOW is in scope and in-date.
- Confirm Rules of Engagement (ROE) covering: target CIDRs, excluded hosts, allowed techniques (coercion? DCSync? password spray?), permitted hours, source-IP allowlist, and customer emergency contact.
- Confirm the authorization explicitly names the domain(s) and tenant(s) you are about to test.
- If ANY of the above is unclear, ambiguous, or missing — STOP and request clarification. Do not proceed on the basis of verbal approval, chat-channel approval, or inferred scope.
Destructive/high-blast-radius actions (DCSync against production DCs, Zerologon, Skeleton Key, GPO edits, krbtgt reset, cert forgery) require a second, specific written approval in addition to the base engagement letter. Every such action must be logged with timestamp, operator, and justification for the customer's IR reconciliation.
Prefer read-only enumeration and dry-run modes first. Escalate only when the previous step establishes the precondition. Never chain offensive actions speculatively.
This skill enables comprehensive internal network and Active Directory penetration testing: reconnaissance, credential attacks, lateral movement, privilege escalation, and domain dominance. It is a thin router — heavy content lives in workflows/, references/, and payloads/. Load only the file you need.
When to Use
- Authorized internal network penetration test
- Authorized Active Directory security assessment
- Lateral movement / privilege escalation validation
- Credential-attack testing (spray, Kerberoast, AS-REP)
- Post-exploitation path verification from a simulated phished user
- Network segmentation bypass validation
- Purple-team exercises where offensive action is agreed with the blue team
Trigger Phrases
What ships with it
17 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
- payloads/cme_modules.md 3.1 KB
- payloads/gpo_abuse_templates.md 3.2 KB
- payloads/responder_config.md 2.3 KB
- references/ad_attack_matrix.md 4.6 KB
- references/bloodhound_queries.md 4.1 KB
- references/bounty_patterns_2024_2026.md 5.7 KB
- references/crackmapexec.md 5.1 KB
- references/impacket_toolkit.md 5.6 KB
- references/lateral_movement.md 5.3 KB
- references/nmap_cheatsheet.md 2.6 KB
- schemas/finding.json 3.4 KB
- workflows/ad_enumeration.md 4.9 KB
- workflows/credential_attacks.md 4.9 KB
- workflows/domain_dominance.md 4.8 KB
- workflows/lateral_movement.md 3.6 KB
- workflows/privilege_escalation.md 5.7 KB
- workflows/recon.md 4.2 KB
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.
- 9d ago First seen · 183 lines · 103 tokens per session scan A e877a48dcefc
network-pentest is a skill published in the GitHub repository JustineDevs/premortem (2 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 103 tokens to every session and 2,611 once invoked, about $0.0005 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 2026-09-03.
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