Real AI agent use cases, with sources and setup prompts

Extract every Elastic Security detection rule with two coding agents

A security researcher ran Opus 5.5 on max and GPT-6 Astra for five days straight to reverse-engineer Elastic Security and pull out all of its detection rules.

$4 in / $20 out per 1M tokens5 daysAdvancedSource linked

Source

@Kostastsale on X · 2026-10-20

Written in our own words. Credit to the original author. Link checked 2026-10-22.

What they did

A security researcher ran Opus 5.5 on max and GPT-6 Astra for five days straight to reverse-engineer Elastic Security and pull out all of its detection rules.

Result (as claimed)

Published the full rule set for others to use.

Tools they used

Cost: Claude Opus 5.5: from $4 in / $20 out per 1M tokens; GPT-6 Astra: from $10 in / $50 out per 1M tokens.

Set it up

  1. Gather your sources

    Collect the papers, notes, links or files you want to work from in one place.

  2. Load them into the tool

    Open Claude Opus 5.5, GPT-6 Astra, Elastic Security and add your sources. Keep the original files so you can check claims later.

  3. Ask focused questions

    Ask for summaries, comparisons or connections with citations to the source passages.

  4. Verify and save

    Spot check claims against the sources, then save the output as notes you can reuse.

Copy the full setup prompt

Paste into your agent and it will walk you through the setup, asking before anything that sends, posts or spends.

You are helping me set up this AI use case end to end in Claude Code.

Goal: Extract every Elastic Security detection rule with two coding agents
What the original author did: A security researcher ran Opus 5.5 on max and GPT-6 Astra for five days straight to reverse-engineer Elastic Security and pull out all of its detection rules.
Reported result (as claimed by the author): Published the full rule set for others to use.
Source: https://x.com/Kostastsale/status/2112445178409890265
Tools they used: Claude Opus 5.5, GPT-6 Astra, Elastic Security
Category: Research & learning

Please:
1. Ask me 3 short questions about my situation (accounts I have, budget, what I want the output to look like).
2. Propose a step-by-step plan using these tools or cheaper alternatives, with the time and cost of each step. Use official pricing pages; say "check pricing" if unsure.
3. Then do the setup with me one step at a time, waiting for my OK before anything that sends messages, posts publicly, spends money or deletes data.
4. Finish with a checklist to run it again next time.

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Guides for this use case

How to reverse-engineer and revive old devices with AI · How to secure vibe-coded apps and agents · How to run multiple coding agents together

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