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Found 2,663 Skills
Query Mozilla telemetry data directly from BigQuery using the bq CLI. Use when the user wants to run SQL against Firefox telemetry, analyze Windows version distribution, count DAU/MAU/WAU, query Glean metrics, or investigate user populations. Triggers on "bigquery", "bq", "telemetry query", "DAU", "MAU", "Windows distribution", "macOS distribution", "Darwin version", "Linux distribution", "kernel version", "client count", "user count", "Glean metrics query", "baseline_clients".
Simplify and refine code for clarity, consistency, and maintainability. Use after writing or modifying code to clean it up while preserving all functionality.
Generate or update tests for changed files in the current git branch, using statement coverage as the evaluation metric (target: 80%+). Use when: (1) the user asks to "write tests for my changes", "add tests for the current branch", or "improve coverage", (2) after implementing a feature to ensure adequate test coverage, (3) before a PR to verify changed code is tested. Supports Vitest and Cargo projects. Invoked with /test-generator or phrases like "generate tests", "test my changes", "cover the diff".
Enforce Test-Driven Development (TDD) workflow for all code changes. Apply PROACTIVELY by default using Red-Green-Refactor cycles for features, bug fixes, and refactoring.
Slack Web APIを操作するスキル。メッセージの投稿・取得、スレッドの取得、投稿の検索、ユーザー情報の取得、自分宛てDM送信を実行。 使用タイミング: (1) Slackにメッセージを投稿したい (2) チャンネルのメッセージ履歴を取得したい (3) スレッドの返信を取得したい (4) 自分の投稿を検索したい (5) ユーザー情報を取得したい (6) 自分にDMを送りたい トリガーキーワード: Slack、メッセージ送信、スレッド取得、チャンネル履歴、ユーザー取得、DM送信
Use this skill to write, validate, or generate commit messages that follow the Conventional Commits specification.
This skill should be used when users request help optimizing, improving, or refining their prompts or instructions for AI models. Use this skill when users provide vague, unclear, or poorly structured prompts and need assistance transforming them into clear, effective, and well-structured instructions that AI models can better understand and execute. This skill applies comprehensive prompt engineering best practices to enhance prompt quality, clarity, and effectiveness.
Use when working with fundamental CLI tools and utilities that are essential for software development across all languages and platforms. Covers shells, version control, system package managers, containers, remote access, HTTP clients, data processing, and build runners. USE FOR: CLI tools, developer tooling, shell scripting, version control, system package managers, containers, remote access, build automation, text processing, choosing cross-platform dev tools DO NOT USE FOR: language-specific package managers (use language-specific skills like npm/pip/cargo), IDE configuration, language-specific build tools (use language-specific skills)
Use when choosing a testing strategy, right-sizing test coverage, or understanding test categories. Covers the Test Trophy model, test type tradeoffs, and guidance on balancing static analysis, unit, integration, and end-to-end tests. USE FOR: testing strategy, Test Trophy, test type selection, right-sizing test coverage, balancing test categories, choosing testing tools, test automation architecture DO NOT USE FOR: specific test category implementation (use static-analysis, unit-testing, integration-testing, e2e-testing, etc.), BDD specification authoring (use specs/documentation/gherkin)
Proposal-first development workflow with commit hygiene and decision authority rules. Enforces: propose before modifying, atomic commits, no force flags, warnings-as-errors. Use for any project where AI agents are primary developers and need guardrails.
TanStack Query v5 server state management for React. Covers query/mutation patterns, v4-to-v5 migration (object syntax, gcTime, isPending, keepPreviousData), optimistic updates via useMutationState, SSR/hydration with HydrationBoundary, infinite queries, offline/PWA support, error boundaries with throwOnError, and React 19 Suspense integration. Use when building data fetching, fixing migration errors, debugging hydration mismatches, implementing caching strategies, or configuring mutations.
Search and manage Jira issues using JQL queries, create/update issues, and manage workflows. Use when working with Jira project management.