The body is mostly lean and avoids explaining concepts Claude already knows, but duplicates the <Api.Mailer.Smtp> component across Core Pattern and Full Example and repeats the build command in both Common Mistakes and Quick Reference; not level 3 because it could be tightened.

It provides fully executable, copy-paste-ready code (the complete webiny.config.tsx example with env-var password), a props table, and exact build commands, matching the 'fully executable code/commands' anchor.

The edit-config / set-env / build / deploy sequence is present but scattered across TL;DR, Common Mistakes, and Quick Reference with no explicit validation or test-email verification checkpoint; not level 1 because the steps are clear, not level 3 because checkpoints are missing/implicit.

With no bundle files needed, the body is organized into clearly signaled sections (TL;DR, Core Pattern, Props Reference, Full Example, Common Mistakes, Quick Reference, Related Skills) with no nested references, matching the well-organized single-purpose skill case.

It names a concrete action and domain ('configuring SMTP email/mailer settings in a Webiny project') but lists a single action with synonyms rather than multiple distinct concrete actions, matching the 'names domain and some actions' anchor.

An explicit 'Use when...' clause states what the skill does, and the 'Triggers on' list states when to use it, clearly answering both what and when — not level 2 because the when is explicit rather than implied.

The 'Triggers on' list gives strong natural-phrase coverage a user would actually say ('configure email', 'set up SMTP', 'email not working', 'sending emails') plus a code hook ('Api.Mailer.Smtp'), matching the 'good coverage of natural terms' anchor.

It is scoped to a narrow niche (Webiny project SMTP mailer) with the distinct code hook 'Api.Mailer.Smtp', making conflict with other skills unlikely and matching the 'clear niche with distinct triggers' anchor.