What Leaked System Prompts From GPT-5.4, Claude 4.6, and Gemini 3.1 Teach You About Writing Your Own
The biggest AI labs just showed us their playbook -- here's how to steal their system prompt patterns for your own workflows
Brian Gagne
CTO of Kief Studio. 20+ years technology consulting. Cisco Certified Ethical Hacker, UPenn AI for Business, Perplexity AI Business Fellow. Builds the tools Qurtoo teaches you to use.
https://kief.studio88 articles
Prompting Parallel Coding Agents: Task Decomposition That Actually Ships
How to write prompts for Cursor 3 background agents and Claude Code subagents that run concurrently without stepping on each other
Red Teaming Your AI Agents With Prompt Chains Before Attackers Do
Multi-turn jailbreaks hit 97% success rates -- here are the exact prompt sequences to stress-test your agentic workflows
Red-Teaming Your Own AI App: A Prompt Injection Test Suite You Can Run Today
40 injection payloads organized by attack class with expected-vs-actual output scoring
Agent Handoff Protocols: How to Transfer State Between Specialized Agents Without Context Loss
The structured handoff format that makes multi-agent pipelines actually reliable
Building Retry Logic Into Agent Prompts: Self-Healing Workflows That Don't Need Human Intervention
Teach your agent to detect its own failures, diagnose the cause, and try a different approach
Tool-Use Prompt Design That Prevents Hallucinated Function Calls in Production
Why your agent invents tools that don't exist and the three-line fix that stops it
The Supervisor-Worker Agent Pattern: One Smart Model Plans, Cheap Models Execute
How to architect multi-agent systems that cost 90% less than running Opus on everything
Context Engineering for Agents: Manage What Your LLM Sees Across 50 Turns Without Losing the Thread
The 2026 skill that replaced prompt engineering as the bottleneck for agentic systems
Prompt Decomposition: Break One Complex Prompt Into Five Simple Ones and Get Better Results for Less Money
The cost and quality math behind splitting monolithic prompts into chains
Persona Stacking: Layer Multiple Roles in One System Prompt for Expert-Level Output
Why 'You are a senior engineer who also reviews for security' beats single-role prompts
Meta-Prompting: Write Prompts That Generate Better Prompts Than You Can
Use frontier models to improve their own instructions with measurable improvement loops