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Found 3,719 Skills
Test and prototype code in a sandboxed environment. Use for debugging, verifying logic, or installing packages.
Use when building and maintaining APIs for applications and services.
Expert-level Java development with Java 21+ features, Spring Boot, Maven/Gradle, and enterprise best practices
Audits web UI quality across accessibility, interaction, forms, typography, navigation, layout, performance, motion, and microcopy. Use when reviewing or refining frontend UI before merge or release, or when the user asks for a UI, UX, or accessibility audit.
Manage TestFlight beta groups and testers using the `asc` CLI tool. Use this skill when: (1) Listing beta groups for an app (`asc testflight groups list`) (2) Listing testers in a group (`asc testflight testers list --group-id <id>`) (3) Adding a single tester by email (`asc testflight testers add`) (4) Removing a tester from a group (`asc testflight testers remove`) (5) Bulk-importing testers from a CSV file (`asc testflight testers import`) (6) Exporting testers to CSV for re-use (`asc testflight testers export`) (7) User says "add beta tester", "invite tester", "remove tester", "import testers", "export testers", "list beta groups", or any TestFlight tester management task
MANDATORY when touching auth tables, tenant isolation, RLS policies, or multi-tenant database code - enforces Row Level Security best practices and catches common bypass vulnerabilities
Write a playwright test, make sure it runs, and is not flaky.
When the user wants to design, test, or improve their app icon to increase tap-through rate and conversions in App Store search and browse. Use when the user mentions "app icon", "icon design", "icon A/B test", "icon variants", "tap-through rate", "icon conversion", "icon refresh", or wants to know what makes a good app icon. For screenshot optimization, see screenshot-optimization. For full listing A/B tests, see ab-test-store-listing.
Review healthcare and EHR software interfaces against a comprehensive design style guide grounded in NIST, FDA, IEC 62366, ISO 9241, ISO 14971, WCAG 2.1, ONC SAFER, and HL7 FHIR standards. Produces a report-only assessment without modifying code or designs. Use when an agent needs to evaluate clinical UI screens, data display, forms, alerts, or workflows for patient-safety, usability, accessibility, and data-clarity compliance.
Integration patterns for Lighthouse CI accessibility auditing. Teaches agents how to detect Lighthouse CI configuration, parse accessibility audit results, map findings to the standard severity model, correlate with local axe-core scans, and track score regressions.
Generate end to end automated tests for existing features. Use when the user says "create qa automated tests for [feature]"
Systematic usability evaluation using established heuristics (Nielsen's 10, Shneiderman's 8, or custom rubrics). Use when reviewing UI designs, screenshots, prototypes, or live products for usability issues. Triggers on "review this design", "what's wrong with this UI", "usability check", "evaluate this interface", or when user shares screenshots/mockups asking for feedback.