Use for mock functions in Bun tests, spyOn, mock.module, implementations, and test doubles.
C testing patterns: Unity framework (TEST_ASSERT_*), CMocka mocking with __wrap_ and linker flag, Valgrind leak checking, AddressSanitizer, CMake CTest integration, test…
Implement production-grade caching with cache keys/TTLs/consistency classes per query, SWR (stale-while-revalidate), explicit invalidation, HTTP cache headers, and compre — from…
Computes VaR using parametric, historical simulation, and Monte Carlo methods with backtesting validation.
Camoufox is an open source anti-detect browser built on Firefox that provides robust fingerprint injection and anti-bot evasion for Python automation workflows.
Design optimal Facebook/Meta campaign structure for testing including ABO vs CBO, ad set organization, targeting, and budget allocation.
Given a feature description, function signature, or existing test suite, surfaces edge cases worth testing across six categories. Explanation depth scales to user skill level.
Use when verifying or debugging behavior that only manifests in the running Electron app — title-bar / window-control overlay, mount-time focus, keyboard shortcuts that depend on…
Configure CI/CD pipelines for Canva Connect API integrations with GitHub Actions. Use when setting up automated testing, configuring CI pipelines, or integrating Canva API tests…
Create a minimal working Canva Connect API example. Use when starting a new Canva integration, testing your setup, or learning basic Canva REST API patterns.
Implement Canva Connect API load testing, auto-scaling, and capacity planning. Use when running performance tests, planning capacity around Canva rate limits, or scaling Canva…
Configure Canva Connect API local development with hot reload and mock server. Use when setting up a development environment, testing OAuth flows locally, or establishing a fast…
Visual regression for canvas-rendered matrix progressions. Tests filmstrip strips that show how 2D data evolves visually over time.
Guides the agent through creating and maintaining Capacitor plugins from scratch. Covers scaffolding a new plugin project, designing the TypeScript API, implementing native iOS…
Generates Capybara E2E tests in Ruby with RSpec integration. Acceptance testing DSL for web apps. Use when user mentions "Capybara", "visit", "fill_in", "click_button", "Ruby…
Build CarPlay-enabled apps using the CarPlay framework. Use when creating navigation, audio, communication, EV charging, parking, or food ordering apps for the car display,…
Builds Karrio shipping carrier integrations from scratch. Covers scaffolding, schema generation, provider implementation (rating, shipping, tracking, pickup, manifest, document…
Evaluates Catz Android coding challenge submissions against SWORD Health requirements. Use when reviewing or assessing this coding challenge.
Use when an already-defined new behavior or high-risk implementation contract needs a failing test before implementation, or the user explicitly requests TDD; diagnosed bugs stay…
Use when a user message needs Chinese-first intent inference, low-confidence collaborative clarification, routing, workflow weight control, skill choice,…
Run CDK validation, security scanning, build, test, and deployment. Use when the user asks to test CDK code, validate CDK configurations, run CDK checks, or deploy CDK to a dev…
Launch Chrome with an unpacked extension and test its UI via CDP. Auto-installs Chrome for Testing if needed.
Write browser automation tests with cdpwave at the CDP level. Async test patterns, multi-tab sessions, event handling, screenshots in CI, escape hatch for uncovered CDP methods.
Run browser tests on pages affected by current PR or branch — from EveryInc/compound-engineering-plugin
Use when running a systematic test sweep of the cella worktree/task system from inside a container. Also use after modifying the daemon, agent CLI, or task manager, before…
Run a health check on CenterTest Java projects — analyze code quality, test automation patterns, and framework compliance. Generates Excel reports with configurable rules.
Conduct a CFO-perspective financial impact review of a codebase. Analyzes infrastructure costs and scaling projections, pricing model alignment with architecture, build-vs-buy…
Adversarial reviewer personality for architecture discussions. Use when a user requests a design review, architecture review, system design critique, tech stack decision, RFC…
（内部子 skill，仅由 fullstack-builder 主 skill 通过 Read 调用，不应被顶层直接触发）fullstack-builder 的改动归档子 skill。在 self-review loop 通过后基于 git diff + 需求.md + 代码产出 改动.md（严格按…
Classify a change set as behavior vs structure, then recommend the correct PR label (change:behavior or change:structure) and the appropriate local/CI checks.
Chaos engineering analysis that maps every external dependency and I/O boundary, then generates tests for timeouts, connection failures, corrupt responses, disk errors, OOM,…
Use when implementing chaos engineering, designing fault injection experiments, or building resilience testing practices. Covers chaos principles and experiment design.
Chaos engineering principles, controlled failure injection, resilience testing, and system recovery validation.
Chaos engineering principles, controlled failure injection, resilience testing, and system recovery validation.
Use when designing or implementing chaos engineering experiments to verify system resilience under failure conditions.
Create tests that describe what legacy code actually does (not what it should do) as safety net before refactoring
Construye chatbots de alto rendimiento para chatbot ab testing con dialogo robusto, guardrails claros y monitoreo continuo de calidad.
Validates an in-progress PR or feature branch of dart_skills_lint against known downstream ecosystem consumers.
Validate the examples/test-repo fixture submodule and drive the built CLI against it end to end -- resolution schemes, groups, hooks, guidance precedence, executables, MCP presets…
Use when the user asks "does version X exist", "is version 3.2.0 released for okhttp", "check if this version is published", "was this version ever released", "check version…
Deploy validation and reality-testing consciousness mode. Use when need to find edge cases, test assumptions, catch fatal flaws before they're expensive.
Expertise in generating domain-specific quality checklists for specifications. Activates when user discusses quality validation or requirement testing.
Configure Playwright test suites with Checkly including playwright.config.ts integration, multiple projects, and full test suite deployment.
Master Chicago TDD (state-based testing). Create tests that verify observable behavior with real collaborators. Use chicago-tdd-tools 1.4.0 AAA pattern.
Implements strict data minimization and retention limits for children''s personal data under GDPR Art. 5(1)(c), Recital 38, UK AADC Standard 8, and COPPA Section 312.7.
Browser automation with two integrations - Chrome DevTools MCP (always available, performance tracing) and Claude-in-Chrome extension (authenticated sessions, GIF recording).
Control Chrome browser programmatically using chrome-devtools-mcp. Use when user asks to automate Chrome, debug web pages, take screenshots, evaluate JavaScript, inspect network…
Testing UI and automating browsers via Chrome DevTools MCP. Use when taking screenshots, checking console errors, testing UI interactions, or verifying visual changes.
Guide for using Claude Code with Chrome browser integration. Use when automating browser tasks, debugging web apps, testing UI, or extracting data from websites.
ใช้ chrome-devtools MCP สร้างและรัน test case (E2E/manual UI test) กับ Jewelry UI — ใช้เมื่อต้องทดสอบ flow บนหน้าจอจริง, verify feature, เขียน test case, หรือ reproduce bug ผ่าน…
Production-ready CI/CD configurations for Playwright — GitHub Actions, GitLab CI, CircleCI, Azure DevOps, Jenkins, Docker, parallel sharding, reporting, code coverage, and global…
Cache Playwright browser binaries in CI/CD pipelines (GitHub Actions, Azure DevOps) to avoid 1-2 minute download overhead on every build. — from petabridge/geekedin
PR 作成後に .github/workflows/ci.yml が失敗したときの対応手順。ローカルで pytest 全ケースを実行し、エラー有無で分岐。エラーがあれば修正して commit-push スキルでコミット・プッシュ、無ければ GitHub Actions のログを確認して原因を特定する。
Manage CI pipelines with error handling, recovery, and complex dependencies. Use when testing pipeline workflows. Not for simple linear scripts or unit testing individual tasks.
Systematic hardware debugging guide for Arduino/ESP32/RP2040 circuits. Use when user reports: circuit not working, components getting hot, no power, intermittent failures,…
Find dependency cycles between modules and break them with layering, interface extraction, or dependency inversion.
Use when choosing or vetting a topic for a 《中国管理科学》 (Chinese Journal of Management Science) manuscript — testing fit with the journal's applied-modeling mission, mapping the paper…
Build already-shaped work TDD-first from a selected slice, clear ticket, bug, technical improvement, or draft PR refinement target.
Test and validate Claude integrations in CI/CD pipelines — Use when working with ci-integration patterns. GitHub Actions, mocking strategies, and cost control.
Send your first message to Claude using the Anthropic SDK. Use when starting a new Claude integration, testing your setup, or learning the Messages API basics.