# The State of Comprehension Debt: I measured 22 major repos > Source: > Published: 2026-07-30 13:12:11+00:00 AI writes more of your code every quarter, authors leave, and reviews keep getting thinner. **Grasp** measures the number no dashboard tracks: how much of your codebase any currently-active human still genuinely understands. It works from git metadata alone, without reading a line of your source. Sixty seconds from repo URL to a dark-code ranking. No signup, no code access. Prefer to look before you scan? [See a full sample report](/sample), our 22-repo benchmark. Curious how the number is made? [The methodology is published in full](/methodology). [ Read the full report: The State of Comprehension Debt 2026](/state-of-comprehension-debt) — 22 repositories measured, what the numbers mean, and the method behind them. Acquiring a codebase, auditing your own, or losing a key engineer? [ Fixed-fee diligence reports are available](/diligence), with deeper analysis delivered in five business days. **Metadata only.** Grasp reads commit history and PR events, never file contents. **Hard evidence only.** AI attribution counts co-author trailers and bot accounts; we report it as a floor, not a guess. **Honest limits.** The Grasp Score is a potential indicator. It tells you where to look, and we say so on every report. **No AI inside.** Grasp itself uses no AI: every score is deterministic, reproducible arithmetic over git metadata. Run it twice and you get the same number, and the raw data lets you re-derive it yourself.