d2-diagram
Comprehensive tool for creating D2 diagrams based on descriptions and requirements. This skill should be used when creating visual diagrams, system architectures, flowcharts, network topologies, data flows, or any visual representation that can be expressed as a diagram. Triggers include requests to "create a diagram," "visualize," "draw an architecture," "show relationships," or when converting textual descriptions into visual diagrams.
pr-review
Mechanics for leaving a pull request review on GitHub - CLI scripts for fetching PR data, attaching comments to the right file/line, wording/tone/severity conventions, and posting a batched review. Use when the user has feedback to leave on a PR and needs to know how to post it correctly.
effect-ts
This skill should be used when the user asks about Effect-TS patterns, services, layers, error handling, service composition, or writing/refactoring code that imports from 'effect'. Also covers Effect + Next.js integration with @prb/effect-next.
sdk-documentation
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tdd
Test-driven development with red-green-refactor loop. Use when user wants to build features or fix bugs using TDD, mentions "red-green-refactor", wants integration tests, or asks for test-first development.
effect-best-practices
Enforces Effect-TS patterns for services, errors, layers, and atoms. Use when writing code with Effect.Service, Schema.TaggedError, Layer composition, or effect-atom React components.
effect-testing
Comprehensive testing patterns for Effect-TS services, errors, layers, and effects. Use this skill when writing tests for Effect-based code.
github-issue
Comprehensive GitHub issue lifecycle management from creation through resolution. Use when creating/viewing/editing/managing GitHub issues, writing issue descriptions, creating sub-issues, linking parent/child issues, dumping issue trees to markdown, or pushing issues from files. Covers the full issue lifecycle - creating issues with conventional commit titles, managing sub-issues and cross-repo references, editing issue content, viewing and listing issues, dumping issue trees with YAML frontmatter, round-trip workflows (dump→edit→push), linking issues, commenting, labeling, and closing. Supports meta-tickets, component issues, and cross-repo sub-issue tracking.
linear-triage
Manage Linear projects — triage boards, create issues and epics, enforce labels and metadata, audit dependencies. Use when user wants to triage issues, create/review tickets, clean up a board, manage labels/priorities/milestones, or write epics with sub-issue decomposition.
maintainable-react
Principles for writing, refactoring, and reviewing React code so it stays maintainable — resisting premature abstraction (the "demon component"), keeping data flow obvious, and putting state and effects in the right place. Use when writing or refactoring a React component or hook, deciding whether to extract or reuse one, reviewing React for maintainability, reaching for useEffect, choosing where state lives, or untangling prop drilling and over-abstraction.
pr-creator
Guide PR authoring from creation through review completion. Use when creating/submitting/authoring pull requests, writing PR descriptions, responding to reviewer comments, or implementing review feedback. Covers the full PR lifecycle - creating PRs linked to issues, handling review comments (triaging, responding, implementing suggestions), and getting PRs merged.
tanstack-best-practices
Best practices for building hook libraries with TanStack Query. Use when: (1) Writing useQuery/useMutation hooks that wrap async data-fetching functions, (2) Designing query key schemas and cache identity systems, (3) Building framework-agnostic query options factories, (4) Implementing cache invalidation patterns (invalidate vs remove vs setQueryData), (5) Wrapping TanStack Query in a multi-layered library (core actions to query options to framework hooks), (6) Handling non-serializable values (bigint, class instances) in query keys, (7) Bridging external stores (zustand, signals) with TanStack Query reactivity. Derived from wagmi's production architecture (React/Vue/Solid Ethereum hooks).
thermo-nuclear-code-quality-review
Run an extremely strict maintainability review for abstraction quality, giant files, and spaghetti-condition growth. Use for a thermo-nuclear code quality review, thermonuclear review, deep code quality audit, or especially harsh maintainability review.