Jakub Krehel's skills (npx skills add jakubkrehel/skills, or the interfaces Claude Code plugin) split interface craft into six domain skills — better-accessibility, better-layout, better-writing, better-typography, better-colors, better-ui — an orchestrator, better-interface, and seven verb skills. Every domain skill blocks on evidence (a WCAG criterion, a visible break, an exact value missed) and treats a deliberate project convention as a preference, which is the same bar as review-format. Most of its domain rules were already in this graph; what was new is distilled into screen-reader-announcements, keyboard-patterns, wcag-thresholds, strings-and-locale, destructive-actions, color-token-tiers, palette-step-roles, gradient-interpolation, logical-properties-rtl, growth-and-overflow, grouping-by-space, change-scoped-review, stress-scenarios and reading-others-interfaces.

Who owns what when it is installed

Job	Companion	This graph keeps
Review a branch, PR or uncommitted change	`/interface-review` (user-invoked)	the table shape and pov; without it, change-scoped-review
Review a whole screen or flow across domains	`better-interface`	review-checklist rows still apply; ui-reviewer when not installed
Stress one component; walk its product states	`/break`, `/state-machine` (user-invoked)	stress-scenarios
Three variants of one piece behind a picker	`/variant` (user-invoked)	prototype-picker's decision record
How another site or effect was built	`/explain-interface` (user-invoked)	reading-others-interfaces
Build from a Figma file or image	`build-design` (needs a Figma MCP)	the contract precedence in skill-router
A technical illustration, exploded view or teardown drawing	`teardown`	diagram-decision when it is really a diagram

User-invoked skills cannot be started by another skill: when one owns the job, tell the user the command and stop. In an orchestrated review its severity and verdict replace this graph's; the pov overrides still apply on top.

Conflicts, settled

Topic	interfaces	This graph	Settled
Button and heading case	one policy per element type; sentence case when none	copy-voice: Title Case	Consistency is the rule; with no policy, sentence case. pov decides for this install
Validation timing	validate on submit, focus the first invalid field	forms-validation: hard check on blur	Both: blur for format errors on a field left, submit always re-runs, focuses and announces. Never disable submit (both agree)
Focus ring	prefer the browser's own; a custom one only as a verified token	accessibility-baseline: a brand ring beats default blue	A brand ring is fine when it clears 3:1 against every colour it crosses and survives forced colours (wcag-thresholds)
Contrast math	WCAG 2.2 ratios	APCA first (contrast-and-color-scheme)	Design with APCA; a finding cites the WCAG ratio
Press scale	0.96, 150 ms ease-out, never when disabled	0.96 in ui-polish-pass; 0.97 in responsive-feedback	0.96, and disabled never scales
Stagger	100 ms between semantic chunks (title, body, actions)	30–80 ms per list item (stagger-choreography)	Different units: chunks of one entrance 100 ms, items in a list 30–80 ms
Exit	150 ms, opacity + 4px blur + fixed −12px	60–80 % of the enter (duration-table)	His values for the staged 300 ms entrance; the ratio for panels and overlays
Icon swap	cross-fade, scale 0.25 → 1, blur 4px → 0, bounce 0	review-checklist row 5: transform one icon	Related geometry morphs or rotates (morphing-icons); unrelated glyphs (play/pause, copy/check) take his cross-fade
Variant host	the real page, `?__variant=` link	prototype-picker: `/proto/<slug>`	The real page when the piece lives on one; a proto route when no page exists yet
Hover gate	`(hover: hover)`	`(hover: hover) and (pointer: fine)` (touch-and-focus)	Either; Tailwind 4's `hover:` already compiles under `(hover: hover)`
Measure	60–75 characters	45–75, 65ch default (line-length-tracking)	65ch default holds; under 45 or over 75 is the finding
Neutrals	pure grey is a fine default; tint optional	color-monochromatic	Tinting is a style, never a finding — unless warm and cool greys mix

Gotcha

His skills cap a review at 15 findings and forbid inventing a diff scope. Running better-interface on a request that names a PR yields an instruction to run /interface-review, not a review. That is correct behaviour, not a failure: pass the command on.

Sources

Jakub Krehel, interfaces skills (MIT, github.com/jakubkrehel/skills, HEAD 592aedc, plugin interfaces 1.17.0, read 2026-10-25): AGENTS.md (rule ownership, invocation), every skills/*/SKILL.md, and the reference files cited in each distilled node. Values are his; the glosses and settlements are this graph's.
Related: skill-router, routing-table, cinetic-reconciliation (the same pattern for a film companion).