AI Speedruns Blue Team CTFs: Agentic Planning & Prompt Playbooks for Cyber Investigations

Leo from Graphistry back again on Prompt | GTFO, where Gadi & crew give you a front-row seat to real-world agent workflows. Today, Leo walks us through our AI “speed-run” of blue-team CTF challenges—and shows how the exact same playbook powers prompt-driven alert investigations.

What You’ll Learn

How to spin up multiple agents in parallel to tackle different IR questions—never get stuck waiting on a single chain

Our “plan file” trick: self-generating Markdown templates that keep prompts, branches, and validations all in one place

Why our generic “data thread” prompt templates crack nearly 100% of tier-200 Splunk CTF challenges in under 3 minutes each—and about 50% of tier-300

The secret to self-validating investigation prompts: building cross-validation routines so agents check their own work against fresh data

Who This Is For

AI-power users who max out their quotas daily and crave new ideas

Sec teams looking to blend code-driven and data-driven agent workflows

Anyone outside an AI-first shop who wants drop-in playbooks for OpenAI, Claude, Cloud Code, or your favorite agent platform

Join the Conversation
I’ll be roaming Black Hat & DefCon halls this week—come find me Thursday at DefCon to chat all things agentic investigations. Drop your questions below and let’s keep building in the open!

#louieai #llm #VibesInvestigating #agents #cybersecurity #graphistry #blackhat2025

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