Provides Go standard testing package expertise and best practices. Ensures proper table-driven test patterns, subtests organization, benchmark implementation, and test coverage strategies. Specializes in testing.T/testing.B usage, test helpers, mock interfaces, race detection, and integration testing patterns following Go conventions. Use when: writing Go test files (_test.go), implementing table-driven tests with subtests (t.Run), creating benchmark tests (testing.B), writing example tests for documentation, implementing test helpers and fixtures, mocking interfaces for unit tests, measuring code coverage with go test -cover, detecting race conditions with -race flag, or organizing integration tests in Go projects.

End-to-end planning, building, and testing of small-scale browser games in SvelteKit + TypeScript running in Docker, including scaffolding, game loop, input, UI, tests, and Docker dev/release setups. Use when a user asks to create or modify a SvelteKit game project, prototype a simple single-player game, or add tests. When requirements are unclear, ask clarifying questions and offer to choose defaults automatically if the user prefers. This skill uses SvelteKit+TS in Docker only (debug hot-reload + nginx release); do not switch stacks unless the user explicitly asks to change scope. Not for multiplayer, servers, or backend services.

Design intuitive, accessible, and visually coherent interfaces aligned with brand and product goals.

This skill applies consistent corporate branding and styling to all generated documents including colors, fonts, layouts, and messaging

Thorough, adversarial security review of API endpoints, UI flows that call those endpoints, and any database-interacting code. Use when the user asks for a security review, permission/authorization audit, red-team style assessment, or vulnerability analysis. Assume access to source code and a running system; perform threat modeling and check current vulnerabilities relevant to the stack.

Use when you need programmatic graph structure analysis — reachability, cycles, critical paths, and diffs without spending LLM tokens on structural questions code can answer

Best practices for using the oracle CLI (prompt + file bundling, engines, sessions, and file attachment patterns).

Ask the user to pick a response style and persist the preference.

Core BMAD Method orchestrator and workflow manager

Write documentation following Metabase's conversational, clear, and user-focused style. Use when creating or editing documentation files (markdown, MDX, etc.).

Pflege das Parsing von Job Descriptions (JD); verwenden bei neuen Feldern, Headern oder Parsing-Regeln.

Analyze disk space and find cleanable files. Use when user wants to clean disk, free up space, find large files, analyze disk usage, or asks about what's taking up space. Triggers on requests like "clean my disk", "free up space on C:", "find large files", "what's using my disk space", "disk cleanup".

Use when analyzing a system to surface hidden issues — draw what you believe exists, then reconcile against what actually exists

Repo workflow for markdowntown CLI development and scans.

jp-uiのFoundation（色/タイポ/アイコン/形状/影）を参照して実装するためのスキル。Foundationトークンや関連ファイルが更新されたらこのスキルも更新する。

Improve test coverage in the OpenAI Agents Python repository: run `make coverage`, inspect coverage artifacts, identify low-coverage files, propose high-impact tests, and confirm with the user before writing tests.

Requests approval for a constrained action or change.

直近の内容を markdown 形式で保存

Generate spectrograms and feature-panel visualizations from audio with the songsee CLI.

Diff-aware guardrail checker for Fear-of-Falling (FOF) changes; fails closed on raw data edits, Kxx intro/req_cols mismatches, and output discipline risks.