The book · out now

The Vibe Quality Model

Five Levels for Shipping AI-Written Code You Can Trust, with Claude Code, Codex, Cursor and Copilot.

By Eduardo Sanchez

Kindle edition on Amazon Paperback on Amazon

Bought it before October 19, 2026? See the errata for what the corrected edition changed.

The book takes developers and teams from ad-hoc to professional vibe coding. It is the full account of the model: each level in its own chapter, with its gate and checklist; the practices that AI made necessary; and how to adopt the model in a team. Each chapter ends with steps to take on the next working day and a prompt an agent can carry out.

Unlike this site, the book includes the author's own case studies alongside public incidents, each told as its sources support.

Cover of The Vibe Quality Model: Five Levels for Shipping AI-Written Code You Can Trust, by Eduardo Sanchez. Tangled strands of light pass through a glowing gate and leave as straight parallel lines.

FormatKindle and paperback (7 × 10 in)

IncludesA checklist for every level, templates for every record the model asks for, the model at a glance, a glossary, and every source cited

Tools namedClaude Code, Codex, Cursor and GitHub Copilot, with the current settings for each kept in the companion repository

Contents

Four parts, nineteen chapters

Part I · Why vibes are not enough

  1. Vibe Coding Works Until It Doesn't
  2. What Maturity Models Got Right, and What AI Breaks
  3. The Vibe Quality Model in One Chapter

Part III · Practices that AI made necessary

  1. Requirements the Agent Can Build From
  2. Context: Rules Files That Agents Follow
  3. Verification, Validation and Peer Review
  4. From Development to Production
  5. Agent Permissions and Safety
  6. Which Model Wrote It, and Who Owns It
  7. Security and the Supply Chain

Part II · The five levels

  1. Where You Stand: The Honest First Assessment
  2. Level 1: Unguided
  3. Level 2: Guarded
  4. Level 3: Standardized
  5. Level 4: Measured
  6. Level 5: Self-Improving

Part IV · Making it work

  1. The Documentation Standard
  2. Assessment by AI
  3. Adopting the Model

Readers

Who it is written for

Technical leads

Deciding how much to let agents do, and able to show why.

Developers

Working with agents every day, alone or on a team, and wanting a gate the agent cannot talk its way past.

Process and quality specialists

Familiar with established maturity models, and looking for one built for agents.