Security-Detections-MCP: Agent for Claude Code

.cursor/agents/attack-range-builder.md

attack-range-builder is an agent for Claude Code, Cursor from MHaggis/Security-Detections-MCP. It costs 22 tokens per session (2,655 once invoked), scanned A, original, no licence file.

An attack-range configuration and build helper. An attack range is a controlled environment where teams test whether security detections work against simulated attacks.

In plain words
What is it for?
Building custom attack ranges for testing detection of selected threats or techniques.
Why use it?
It removes some of the work involved in preparing test environments for specific detection scenarios.

Agent for Claude CodeCursor

Written for Cursor and Claude Code: installed under .cursor/, but also a Claude Code subagent (agents/*.md). Also seen: model in frontmatter.

This is MHaggis/Security-Detections-MCP's own configuration. It tells Claude Code and Cursor how to work on Security-Detections-MCP itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything Security-Detections-MCP configures →

Reuse

Borrowing it

Nothing to install: this file belongs to MHaggis/Security-Detections-MCP. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/MHaggis/Security-Detections-MCP/main/.cursor/agents/attack-range-builder.md
Clone the repo
git clone --depth 1 https://github.com/MHaggis/Security-Detections-MCP

Made for: Claude Code, 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 attack-range-builder

README.md
[![agentmods](https://agentmods.dev/badge/agents/mhaggis/security-detections-mcp/attack-range-builder/github.svg)](https://agentmods.dev/agents/mhaggis/security-detections-mcp/attack-range-builder)
Your own site
<a href="https://agentmods.dev/agents/mhaggis/security-detections-mcp/attack-range-builder"><img src="https://agentmods.dev/badge/agents/mhaggis/security-detections-mcp/attack-range-builder/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 attack-range-builder

Your own site · 80×15
<a href="https://agentmods.dev/agents/mhaggis/security-detections-mcp/attack-range-builder"><img src="https://agentmods.dev/badge/agents/mhaggis/security-detections-mcp/attack-range-builder.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 22 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 2,655 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. 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 $0.00022 $0.02655
Opus 5.5 $0.00009 $0.01062
Sonnet 5.5 $0.00004 $0.00531
Haiku 4.5 $0.00002 $0.00265

Measured 1mo ago against content hash 28fdf1e57ad9, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

attack-range-builder scanned grade A with 1 finding 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl -XGET "localhost:9200/_cat/indices?v"
.cursor/agents/attack-range-builder.md · 389 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

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 · 389 lines · 22 tokens per session scan A 28fdf1e57ad9

Subscribe to this mod's changes

attack-range-builder is an agent published in the GitHub repository MHaggis/Security-Detections-MCP (502 stars, last pushed 4mo ago), with no licence file. It adds 22 tokens to every session and 2,655 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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