Implement, review, or improve SwiftUI features using the iOS 26+ Liquid Glass API. Use when asked to adopt Liquid Glass in new SwiftUI UI, refactor an existing feature to Liquid Glass, or review Liquid Glass usage for correctness, performance, and design alignment.
Use when implementing Realm database in iOS apps, encountering thread-safety errors, async/await crashes, performance issues with sync/writes, or integrating with Codable APIs
Use when implementing data persistence in iOS apps with SwiftData or CoreData, encountering migration errors, performance issues with fetches, or choosing between persistence frameworks
Use when executing implementation plans. Dispatches independent subagents for individual tasks with code review checkpoints between iterations for rapid, controlled development.
Deep expertise for documentation lifecycle orchestration. Quality assessment frameworks, workflow patterns, delegation protocols, and release checklists. Auto-loads for doc-expert agent.
AWS development with CDK best practices, serverless patterns, cost optimization, and event-driven architecture. Use when deploying to AWS, writing Lambda functions, configuring API Gateway, working with DynamoDB, S3, or any AWS service.
Use when starting new feature work to create isolated git worktrees with smart directory selection and safety verification. Keeps main branch clean while developing.
Discover and follow recipes via MCP resources for setup guides, skills, and cookbooks. The meta-skill for using fullstackrecipes effectively.
Manage bookmarks with Raindrop.io MCP server. Use when saving URLs, organizing bookmarks into collections, tagging content, searching saved links, or managing highlights. Covers bookmark CRUD, collection organization, tag management, and URL parsing.
Signed Distance Functions (SDFs) in GLSL—2D/3D shape primitives, boolean operations (union, intersection, subtraction), smooth blending, repetition, and raymarching fundamentals. Use when creating procedural shapes, text effects, smooth morphing, or raymarched 3D scenes.
Use and troubleshoot the Memory MCP server for episodic memory retrieval and pattern analysis. Use this skill when working with MCP server tools (query_memory, analyze_patterns, advanced_pattern_analysis), validating the MCP implementation, or debugging MCP server issues.
Use when implementing any feature or bugfix, before writing implementation code. Enforces RED-GREEN-REFACTOR cycle with strict discipline against rationalization.
Check and install OpenAPI Sync MCP server dependency
Security patterns for web forms including autocomplete attributes for password managers, CSRF protection, XSS prevention, and input sanitization. Use when implementing authentication forms, payment forms, or any form handling sensitive data.
Use Vercel's agent-browser CLI for automated browser testing and UI verification. Use when: (1) browser-based quality gates are required, (2) verifying UI behavior in the browser, (3) gathering screenshots or DOM evidence during Ralph execution. This replaces Playwriter MCP usage.
Browser automation via Puppeteer MCP for JS-rendered content
Write, test, and update Unison code using MCP tools. Use when working with Unison language files (.u extension), UCM operations, or Unison projects. Enforces TDD with strict typechecking via development skill. Used as a part of the XP skill.
Write, test, and update Unison code using the Unison MCP tool. Use when working with Unison language files (.u extension), UCM operations, or Unison projects. An extension to the XP skill.
Analyze your uploaded YouTube videos' performance against competitor benchmarks using Playwright MCP. Use when asked to review video analytics, compare performance, check how a video is doing, or reflect on a video's success.
