Every Prompt You Send Drags 18,384 Words Of Junk. Here's How I Cut It.

Every Prompt You Send Drags 18,384 Words Of Junk. Here's How I Cut It.

Understanding AI Harnesses: The Importance of a Clean Setup

Introduction to AI Harnesses

  • The speaker discusses their experience with overbuilding an AI harness for Fable 5 and Chat GPT 5.6, leading to performance issues due to excessive rules and instructions.
  • Each time the AI failed, additional rules were added, resulting in a bloated system that hindered model performance.

Defining the Harness

  • A harness encompasses all components surrounding the AI model, including custom instructions, project files, saved prompts, memory, skills, tools, and permissions.
  • It shapes responses before user input is provided and helps models understand how to respond effectively.

Identifying Problems with Over-Bloating

  • The speaker reflects on blaming the model for strange behavior instead of recognizing the impact of a bloated harness.
  • An inventory revealed 66 reusable skills and 172 instruction-related files; while some were essential for protection against errors, many were redundant or outdated.

Principles for Building a Stable Harness

Importance of Clarity in Instructions

  • The speaker compares a harness to a car's chassis—essential for transferring force from engine to wheels—and emphasizes intentional design rather than random additions.

Mapping Before Cleaning

  • The first principle involves mapping out the entire harness before attempting any cleaning or optimization efforts.
  • This mapping process identifies each control's purpose and relevance within the system.

Blaming the Right Layer

Testing Different Setups

  • By testing Fable 5 under different setups (compact vs. thicker), it was found that simpler configurations yielded better results without unnecessary complications.

Understanding Model Failures

  • It's crucial not to blame models outright but rather assess whether failures stemmed from model limitations or issues within the surrounding setup.

Streamlining Rules and Responsibilities

Consolidating Instructions

  • Having multiple versions of similar rules can lead to confusion; consolidating them into one clear version ensures consistency across outputs.

Loading Specialist Knowledge Appropriately

  • Specialist knowledge should be loaded only when necessary during specific tasks rather than all at once at the beginning.

Implementing Hard Checks

Enforcing Requirements Effectively

  • Hard requirements should have corresponding hard checks that can be verified by machines; this reduces complexity in managing instructions.

Tailoring Models for Specific Products

Differentiating Between Models

  • Recognizing differences between various models (e.g., Fable 5 vs. Chat GPT 5.6 across different platforms like API vs. Codex).

Ensuring Consistency Across Setups

  • Consistent delivery requirements are vital; understanding how each model interacts with its respective harness is key to achieving desired outcomes.

Lessons Learned from Model Interactions

Contextual Relevance

  • Providing context at appropriate times enhances model performance without overwhelming it with unnecessary information upfront.

Audit Results: Identifying Areas for Improvement

Evaluating Skill Efficiency

The audit revealed significant inefficiencies in skill management; only six out of sixty-six root skills had effective evaluations attached.

Conclusion: Moving Towards Cleaner Systems

  • Final Thoughts:
  • The goal is not merely shortening prompts but ensuring clarity in routing skills effectively while maintaining depth where needed.
  • A cleaner setup allows users—whether product managers or developers—to work more efficiently without being bogged down by outdated memories or corrections that no longer apply.
Video description

Full post w/ Clean Your Harness Guide: https://natesnewsletter.substack.com/p/ai-harness-audit?r=1z4sm5&utm_campaign=post&utm_medium=web&showWelcomeOnShare=true Your new AI model is running on instructions you wrote for the old one. This is the AI harness audit: how to find the hidden setup shaping your AI and clean it safely. I mapped every skill, memory, system prompt, permission, and check around my own AI and found 66 skill routes and 172 instruction files quietly slowing the models down. In this deep dive I test a compact setup against a much heavier one, show why the richer prompt still lost on delivery, and give you six rules for a harness that survives the next model upgrade. Then I hand you the cleaner so you can run the same audit on your own Claude or Codex setup. My Links 🔗 👉🏻 Newsletter: https://natesnewsletter.substack.com/ 👉🏻 X: https://x.com/natebjones 👉🏻 TikTok: https://www.tiktok.com/@nate.b.jones 👉🏻 Instagram: https://www.instagram.com/nate.b.jones What's really happening inside your AI setup? The common story is that a new model just makes everything better, but the real question is what that model inherits from the setup you already built. In this video, I share the inside scoop on auditing the harness around your AI: - Why your upgraded model can feel worse than a fresh chat - How a compact brief beat a richer method on delivery - What six rules keep a harness clean as models change - Where Fable 5 and ChatGPT 5.6 fail for different reasons A cleaner harness won't make a weak model strong, but it will tell you whether the problem is the model or the machinery you wrapped around it. Chapters: 00:00 I Overbuilt My AI Harness 01:58 The Hidden Cost of Harness Bloat 04:54 Rule 2: Blame the Right Layer 06:06 Rule 3: One Rule, One Home, One Owner 07:27 Rule 4: Load It When You Need It 08:25 Rule 5: Hard Rules Need Hard Checks 08:58 Rule 6: Build for the Model and Product 10:58 The Codex Audit Results 12:17 Fable 5 vs. ChatGPT 5.6 Failure Modes 12:54 A Clean Harness Without the Barnacles 14:17 Own the System Around Your AI 14:39 The Cleaner Skill Listen to this video as a podcast. - Spotify: https://open.spotify.com/show/0gkFdjd1wptEKJKLu9LbZ4 - Apple Podcasts: https://podcasts.apple.com/us/podcast/ai-news-strategy-daily-with-nate-b-jones/id1877109372