detection-engineering

detection-engineering is a cursor rule for Cursor from patrykkopycinski/elastic-cursor-plugin. It costs 574 tokens per session, scanned A, original, no licence file.

A set of best practices for writing and maintaining Elastic Security detection rules, which identify possible security threats in monitored data.

In plain words
What is it for?
Creating and updating detection rules in Elastic Security.
Why use it?
It helps keep detection rules consistent and maintainable as security monitoring changes.

Cursor rule for Cursor

Written for Cursor: a Cursor rule (.mdc).

Good fit Creating and updating detection rules in Elastic Security.

Compare 6 cursor rules from other repositories ↓
Install with agentmods
npx agentmods add rules/patrykkopycinski/elastic-cursor-plugin/detection-engineering
Install

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.

Clone the repo
git clone --depth 1 https://github.com/patrykkopycinski/elastic-cursor-plugin

Made for: Cursor.

Wrote 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.

agentmods badge for detection-engineering

README.md
[![agentmods](https://agentmods.dev/badge/rules/patrykkopycinski/elastic-cursor-plugin/detection-engineering/github.svg)](https://agentmods.dev/rules/patrykkopycinski/elastic-cursor-plugin/detection-engineering)
Your own site
<a href="https://agentmods.dev/rules/patrykkopycinski/elastic-cursor-plugin/detection-engineering"><img src="https://agentmods.dev/badge/rules/patrykkopycinski/elastic-cursor-plugin/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.

agentmods 80×15 button for detection-engineering

Your own site · 80×15
<a href="https://agentmods.dev/rules/patrykkopycinski/elastic-cursor-plugin/detection-engineering"><img src="https://agentmods.dev/badge/rules/patrykkopycinski/elastic-cursor-plugin/detection-engineering.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 574 This file is loaded in full into every session.
When invoked 574 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00574 $0.00574
Opus 5.5 $0.00230 $0.00230
Sonnet 5.5 $0.00115 $0.00115
Haiku 4.5 $0.00057 $0.00057

Measured 1mo ago against content hash 41b66b8fee65, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

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 1mo 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.

rules/detection-engineering.mdc · 39 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

Changes

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.

  1. 1mo ago First seen · 39 lines · 574 tokens per session scan A 41b66b8fee65

Subscribe to this mod's changes

detection-engineering is a cursor rule published in the GitHub repository patrykkopycinski/elastic-cursor-plugin (6 stars, last pushed 4mo ago), with no licence file. It adds 574 tokens to every session, about $0.0023 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 2026-08-31.