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Framework Definition

Vibe Coding Debt

Coined by Richard Ewing, Product Economist

Definition

Vibe Coding Debt is the specific architectural liability created when engineers use AI copilots to generate large volumes of probabilistic code without deeply understanding the underlying system logic. A rapidly trending concept in 2026, "vibe coding" describes an experimental, iterative workflow where developers prompt an AI to generate features, accepting the code because it "vibes" or appears to work, without verifying edge cases or structural integrity. While this produces unprecedented short-term velocity, it creates a massive undocumented liability. Vibe Coding Debt is uniquely dangerous because unlike traditional technical debt—which human engineers usually understand because they wrote it—vibe coding debt is opaque. When an LLM-generated abstraction breaks three quarters later, the original human "author" has zero context on why the code was structured that way, making the Mean Time To Recovery (MTTR) catastrophic.

Why It Matters

For startups rushing to ship AI features, Vibe Coding Debt is the silent killer. It creates isolated pockets of code that nobody on the team fully understands, severely complicating future scaling or security audits. For CTOs and engineering leaders, governing vibe coding requires a structural shift in how teams operate: moving developers from being code generators to being systems auditors. Relying on the Product Debt Index (PDI) to track opaque code regions ensures that vibe coding velocity doesn't trigger unexpected Technical Insolvency.

How to Calculate

  1. 1Audit code contributions to identify segments exclusively authored by AI copilots
  2. 2Measure the test coverage of AI-generated vs. human-authored code
  3. 3Calculate MTTR for incidents within AI-generated modules vs. legacy human code
  4. 4Index these factors through the Product Debt Index (PDI) calculator

Related Articles

Calculate Yours

Use the interactive tool to calculate your Vibe Coding Debt.

Use the Product Debt Index (PDI) Calculator →

Citation

To cite this definition:

Ewing, R. (2026). "Vibe Coding Debt." richardewing.io.
https://www.richardewing.io/articles/frameworks/vibe-coding-debt