Conciseness

The body is code-forward and lean — runnable TypeScript snippets with short directive bullets ('ALWAYS use fb.nonNullable.group()', 'Use getRawValue()') and no padding or explanation of concepts Claude already knows.

Actionability

Provides fully executable, copy-paste-ready TypeScript for Signal Forms, Reactive Forms, and FormArray, covering the common login-form and nested-form cases with specific imports and APIs.

Workflow Clarity

The 'When to Use What' table gives clear selection guidance and each section is unambiguous, but this is a reference/comparison skill with no multi-step process or validation checkpoints, so it does not reach the 5 anchor.

Progressive Disclosure

Content is well-organized into clearly headed sections (When to Use What, Signal Forms, Reactive Forms, Nested Forms, Resources) with no nested or buried references; no bundle files exist, and the self-contained structure is appropriate, though it slightly exceeds the 'under 50 lines' simple-skill threshold.

Specificity

Names the domain ('Angular forms') and two concrete sub-approaches ('Signal Forms (experimental) and Reactive Forms') plus 'validation' and 'form state', but lacks explicit action verbs; not comprehensive enough for a 4.

Completeness

Explicitly answers both what ('Angular forms: Signal Forms ... and Reactive Forms') and when ('Trigger: When working with forms, validation, or form state in Angular'); the 'what' is terse rather than fully spelled out, so it is not a 5.

Trigger Term Quality

'forms, validation, or form state in Angular' are natural terms a user would say, with good coverage; a few synonyms (e.g. 'form controls', 'formBuilder', 'template-driven') are missing, keeping it below 5.

Distinctiveness Conflict Risk

'Angular forms' is a clear, narrow niche with distinct triggers and low conflict risk; minor overlap with a generic Angular or forms skill keeps it just below 5.