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 HoangNguyen0403/agent-skills-standard --skill cyber-detection-engineeringgit clone --depth 1 https://github.com/HoangNguyen0403/agent-skills-standardWrote 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/hoangnguyen0403/agent-skills-standard/cyber-detection-engineering)<a href="https://agentmods.dev/skills/hoangnguyen0403/agent-skills-standard/cyber-detection-engineering"><img src="https://agentmods.dev/badge/skills/hoangnguyen0403/agent-skills-standard/cyber-detection-engineering/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/hoangnguyen0403/agent-skills-standard/cyber-detection-engineering"><img src="https://agentmods.dev/badge/skills/hoangnguyen0403/agent-skills-standard/cyber-detection-engineering.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 | $0.00053 | $0.00490 |
| Opus 5.5 | $0.00021 | $0.00196 |
| Sonnet 5.5 | $0.00011 | $0.00098 |
| Haiku 4.5 | $0.00005 | $0.00049 |
Grade A, and why
cyber-detection-engineering 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 28d 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.
What it actually says
Cyber Detection Engineering
Priority: P0 (CRITICAL)
Do not claim analytic coverage without required telemetry and executable support.
Structure
Input: analytic question, behavior hypothesis, data source/fields, retention, clock quality, scope. Process: define predicates, entity keys, window, cardinality, ordered correlation, suppression, benign cases. Output: rule/spec, prerequisites, severity, lifecycle status, fixtures, limitations, evidence record.
Rules
- A missing source, field, retention, clock, or collection path makes coverage
blockedornot-tested. - Multi-step behavior requires ordered sequence correlation over related entities/events; never substitute Boolean OR across unrelated single events.
- Sigma
levelexpresses impact/priority (informational,low,medium,high,critical). Sigmastatusexpresses lifecycle (stable,test,experimental,deprecated). A valid portable rule does not prove backend execution or telemetry. - Record expected matches, exclusions and benign/false-positive cases with rationale.
- Include scope reference; skill/version/source; observation time; status; evidence references; limitations; owner. Reuse shared skill IDs.
- Production queries or modifications require documented authorization and runtime-proven controls; offline fixtures only.
Anti-Patterns
- Never write
severity: highas Sigma metadata; uselevel: high. - Never equate
levelwithstatus, rule validity with execution, or synthetic matches with efficacy. - Never hide missing telemetry by lowering priority or widening OR logic.
References (lazy, primary)
- Sigma specification: https://sigmahq.io/sigma-specification/specification/sigma-rules-specification.html
- MITRE ATT&CK detection strategies: https://attack.mitre.org/detectionstrategies/
- Reuse
cyber-authorization,cyber-evidence,cyber-framework-mapping.
What ships with it
1 file 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.
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.
- 28d ago First seen · 41 lines · 53 tokens per session scan A 1b92d046ace1
cyber-detection-engineering is a skill published in the GitHub repository HoangNguyen0403/agent-skills-standard (582 stars, last pushed today), licensed MIT. It adds 53 tokens to every session and 490 once invoked, about $0.0002 per session on Opus 5.5. 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 2026-09-30.
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