The body is lean, assumes Claude's competence (no generic explanations of what a clock or library is), and every section earns its place; the minor overlap between the 'How to use' steps and the 'Authoring' section is structural rather than padded fluff.

Provides copy-paste-ready, fully executable guidance throughout — install commands, the faketime wrapper invocation, raw LD_PRELOAD, a Python subprocess test, and a CI yaml snippet — matching the anchor-3 example.

The 7-step 'How to use' is clearly sequenced with an explicit verification step (step 6: assert on visible output), and the worked example adds a 4-step DST sequence; this is not a destructive/batch operation, so no feedback-loop cap applies.

SKILL.md is a concise overview that offloads variant syntax and recipes to one real, clearly-signaled, one-level-deep reference (references/faketime-modes-and-recipes.md, verified present), matching the anchor-3 pattern.

Lists multiple concrete actions and modes ('intercepting time() / gettimeofday() / clock_gettime()', absolute-date, relative offset, advance-rate, FAKETIME_NO_CACHE), matching the anchor-3 example, but the second-person phrasing 'Use when you need to...' triggers the rubric's -1 specificity penalty for non-third-person voice.

Explicitly answers both what ('the LD_PRELOAD library that fakes the clock...') and when ('Use when you need to fake time... for C/C++ or any native binary...'), matching the anchor-3 example with an explicit trigger clause.

Includes natural user phrases 'fake time, mock the clock, or freeze time' plus 'deterministic wall-clock time', giving good coverage of terms a user would actually say.

The LD_PRELOAD / native-binary scoping ('for C/C++ or any native binary') carves a clear niche distinct from language-native fake-timer siblings, making wrong-skill triggering unlikely.