agentskills

Multi-perspective code review that synthesizes findings from multiple reviewers into a unified report. Use when the user asks to review code changes, audit a diff, check code quality, review a PR, review commits, or review uncommitted changes. Also covers 'code review', 'review my changes', 'check this before I merge', or wanting multiple perspectives on code. Do not use for documentation/markdown review or trivial single-line changes.

Unified external research for documentation, GitHub code, and package versions. Use when the user needs to look up library docs or API references, search code in a public GitHub repo, check the latest version of a package, verify whether a dependency is deprecated, or any task requiring external knowledge beyond the local codebase and training data.

Unified local codebase search across keyword, structural, and semantic modes. Use when searching a codebase for code patterns, tracing how features work across files, finding structural code issues, answering conceptual questions about a codebase, or exploring unfamiliar projects. Do not use for external library docs or GitHub searches.

Advanced Effect-TS patterns for typed errors, dependency injection, concurrency, resource management, schema validation, and streaming. Use when building Effect programs — not simple Effect.succeed/fail questions, but multi-concern tasks like designing service layers with Layer composition, handling typed error hierarchies with tagged errors, managing concurrent fibers with structured concurrency, scoped resource lifecycles, schema-driven API contracts, or integrating Effect with existing Express/Hono/database stacks. Do not use for basic TypeScript or general functional programming questions.

Deep analysis and expert reasoning. Use when the user asks for 'oracle', 'second opinion', architecture analysis, elusive bug debugging, impact assessment, security reasoning, refactoring strategy, or trade-off evaluation — problems that benefit from deep, independent reasoning. Do not use for simple factual questions, code generation, code review (use council-review), or tasks needing file modifications.

Advanced Rust patterns for ownership, traits, async, error handling, macros, type system tricks, unsafe, and performance. Use when tackling complex Rust problems — not basic syntax, but multi-concern tasks like designing cancellation-safe async services, choosing between trait objects and generics, building typestated APIs, structuring error hierarchies across crate boundaries, writing proc macros, or optimizing hot paths with zero-cost abstractions. Do not use for basic Rust syntax, simple CLI tools, or beginner ownership questions.

Advanced TypeScript type system patterns for generics, conditional types, mapped types, template literals, and utility types. Use when implementing complex type logic, creating reusable type utilities, or enforcing type safety beyond basic annotations — discriminated unions with exhaustive checks, branded/opaque types for domain safety, satisfies vs as const decisions, NoInfer for inference control, module augmentation for third-party types, or choosing between hand-rolled types and type-fest utilities. Do not use for basic TypeScript syntax or simple type annotations.

Advanced React patterns and conventions for data fetching, tables, forms, state machines, client state management, schema validation, and testing. Use when tackling complex React problems — not simple component questions, but multi-concern tasks like server-driven tables with filtering, multi-step wizards, eliminating useEffect, Suspense architecture, choosing between state management approaches, or designing data flow across server/client/URL/form state. Do not use for web-specific routing/SSR or React Native-specific navigation/performance.

Web-specific React patterns for type-safe file-based routing, route-level data loading, server-side rendering, search param validation, code splitting, and list virtualization. Use when building React web apps with route loaders, SSR streaming, validated search params, lazy route splitting, or virtualizing large DOM lists. Do not use for React Native apps — use react-native-advanced instead.

Reviews TypeScript/JavaScript diffs for reinvented utilities and missed reuse of standard libraries, native APIs, or existing workspace helpers. Use when reviewing TS/JS code changes, auditing a diff, checking a PR before merge, writing new utility helpers, or refactoring existing helpers. Detects installed project libraries and prefers those when present. Reports findings as text only — never edits files. Do not use for non-JS/TS code, documentation, configuration, or trivial single-line changes.

React Native and Expo patterns for navigation, data fetching lifecycle, infinite scroll lists, form handling, state persistence, authentication routing, gesture-driven animations, bottom sheets, push notifications, and OTA updates. Use when building Expo/React Native apps that need data prefetching without route loaders, auth guard routing, infinite scroll with FlashList, gesture-driven animations, or native platform integration (push notifications, OTA updates, MMKV persistence). Do not use for React web apps.