Conciseness

Efficient body built from lean tables and code with no explanation of concepts Claude already knows (no 'what is i18n' padding). Minor trimmable parts: the 'When to use' section repeats the description's triggers, and the Step 2 prose restates what the 'letterMultiplier' code comment already says. Not level 5 because those few tokens could be trimmed; not level 3 because there is no genuinely unnecessary explanation.

Actionability

Mostly executable guidance: a complete i18next-pseudo init config, a Playwright spec, CI yaml, and a per-stack library table. Not level 5 because Step 3 is semi-pseudocode ('APP_URL=http://localhost:3000?lng=en-XA # or whatever the pseudo-locale code is') and the FormatJS/Django rows give approaches rather than commands; clearly above level 3 since the code shown is real and runnable, not pseudocode.

Workflow Clarity

Steps 1-7 are clearly sequenced (pick library, configure, run, spot issues, regression, CI, manual fallback) and include an explicit validation checkpoint with error recovery: 'Verify the pseudo-locale is active before walking the UI... If the page still shows plain English, the locale did not activate - fix the lng param or cookie and reload.' The worked example closes the loop (issue found, fixed, re-run clean). This matches the level-5 anchor with validation and feedback loops; nothing destructive or batch-like triggers the cap.

Progressive Disclosure

The single bundle reference (references/manual-transform.md, which exists) is well signaled in Step 7 and in the References section, one level deep. Not level 5 because the ~170-line body inlines the Playwright spec and CI yaml that could arguably live in reference files, leaving the SKILL.md a purer overview; well above level 3 since the structure and navigation are clear.

Specificity

Lists multiple concrete actions with comprehensive coverage: 'Configures pseudo-localization', 'replaces translatable strings with accented variants', '35% length expansion', and enumerates the exact issues surfaced ('hardcoded strings, truncation, encoding, and bidi handling'). Fits the level-5 anchor (multiple specific concrete actions, comprehensive) better than level 4, which requires minor gaps in coverage.

Completeness

Explicitly answers both: what ('Configures pseudo-localization for the app... surfaces UI issues: hardcoded strings, truncation, encoding, and bidi handling') and when ('Use when preparing an app for translation (i18n / internationalization), validating l10n infrastructure, or when the user mentions pseudo-localization or localization testing'). Matches the level-5 anchor exactly; the when-clause is explicit with concrete triggers, so level 4's 'could be more explicit' does not apply.

Trigger Term Quality

Good keyword coverage with natural terms users would say: 'i18n / internationalization', 'l10n', 'pseudo-localization', 'localization testing', 'preparing an app for translation'. Not level 5 because a few natural variations are missing (e.g., 'translation readiness', 'fake localization', 'RTL testing'), though it is clearly above the midpoint.

Distinctiveness Conflict Risk

Clear niche with distinct triggers ('pseudo-localization', 'pseudo-locale', 'l10n infrastructure validation') and minimal conflict risk; only marginal overlap with a general i18n/translation skill. Not a lower score because the trigger phrases are specific enough to disambiguate.