Conciseness

The body is largely lean — command tables, parameter lists, and error tables with no re-explanation of concepts Claude already knows — with only minor trimming opportunities, e.g., the Prompt Engineering 'Specify These Elements' list (layout/components/content/style) edges toward generic prompt-writing guidance, and the Weak Prompts examples are near-tautological. It matches 'efficient; minor instances of over-explanation that could be trimmed' rather than the every-token-earns-its-place level 5.

Actionability

Every workflow is a fully executable `mcporter call ...` command with real flags and values, parameters are documented with defaults and durations (e.g., "GEMINI_3_FLASH (default, 30–60s)"), and the Complete Design Flow example is copy-paste ready end to end. This matches 'fully executable; copy-paste ready code or commands; specific examples cover the common cases'.

Workflow Clarity

The Iteration Workflow is a clear 5-step sequence (create project → generate with FLASH → refine → final with PRO → extract code), setup includes a verification checkpoint ("mcporter list stitch"), and the Errors table plus the output_components feedback-handling loop support recovery. It falls short of level 5 only because post-generation validation is implicit (no explicit 'inspect the screen before downloading' step), matching 'clear sequence with most checkpoints present; minor validation gaps'.

Progressive Disclosure

The single-file skill (~220 lines) is well organized into scannable sections with tables for tools, device types, and errors; content is appropriately placed for this scope and no reference files are needed. It matches 'good structure; most content is appropriately placed; minor organization gaps' — the 5 anchor's reference-based structure is not applicable since no bundle files exist, and no content is buried or nested.

Specificity

The description names the domain ("Generate UI designs and frontend code with Google Stitch via MCP") and 1-2 concrete actions (generate designs, generate frontend code), but coverage is not comprehensive — no mention of creating projects, listing screens, or downloading code/images, and "create screens, mockups, UI designs" are variations of the same single action. It sits at the 'names domain and 1-2 concrete actions, but not comprehensive' anchor rather than the 'several specific actions' level above.

Completeness

It explicitly answers both: what ("Generate UI designs and frontend code with Google Stitch via MCP") and when ("Use when asked to create screens, mockups, UI designs, or generate frontend code from text descriptions"), with concrete trigger phrases in third person. It fits the top anchor; the anchor below (4) requires the 'when' to be less explicit, but here the trigger list is as concrete as the 5-anchor example.

Trigger Term Quality

"Use when asked to create screens, mockups, UI designs, or generate frontend code from text descriptions" gives good natural keyword coverage (screens, mockups, UI designs, frontend code), but common variations users would say are missing (e.g., "wireframes", "prototypes", "landing pages", "app design"). This matches 'good keyword coverage; a few natural terms missing' — above the 'some relevant keywords but missing common variations' anchor, below comprehensive synonym coverage.

Distinctiveness Conflict Risk

The Stitch/MCP niche and design-generation triggers are mostly distinct, but "generate frontend code" and "UI designs" carry minor overlap risk with general frontend-development and web-design skills. This matches 'mostly distinct; minor overlap risk with closely related skills' — not the minimal-conflict level 5, since the triggers are broad verbs rather than uniquely Stitch-specific phrases.