Debugging
Find and fix bugs, error analysis
planning-with-files
by trailofbits
Implements file-based planning for complex multi-step tasks. Creates task_plan.md, findings.md, and progress.md as persistent working memory. Use when starting tasks requiring >5 tool calls, multi-phase projects, research, or any work where losing track of goals and progress would be costly.
api-design
by yonatangross
API design patterns for REST/GraphQL framework design, versioning strategies, and RFC 9457 error handling. Use when designing API endpoints, choosing versioning schemes, implementing Problem Details errors, or building OpenAPI specifications.
errors
by yonatangross
Error pattern analysis and troubleshooting for Claude Code sessions. Use when handling errors, fixing failures, troubleshooting issues.
fix-issue
by yonatangross
"Fixes GitHub issues with parallel analysis. Use to debug errors, resolve regressions, fix bugs, or triage issues."
git-commit
by accomplish-ai
Create well-structured git commits with conventional commit messages, proper staging, and commit best practices.
download-file
by accomplish-ai
'Download files in Chrome on Windows and macOS. Handles triggering downloads, detecting and resolving popups, verifying completion, and locating files.'
building-python-clis
by wdm0006
Builds command-line interfaces for Python libraries using Click or Typer. Includes command groups, argument handling, progress bars, shell completion, and CLI testing with CliRunner. Use when adding CLI functionality to a library or building standalone command-line tools.
kcli-provider-development
by karmab
Guides implementation of new virtualization providers for kcli. Use when adding support for a new cloud platform, hypervisor, or infrastructure provider.
qa-manual-istqb
by fugazi
ISTQB Foundation Level (CTFL) aligned QA toolkit for manual and automated testing. Use when asked to create test plans, test strategies, test conditions, test cases, bug reports, defect logs, regression suites, traceability matrices, or exploratory charters. Supports risk-based testing, test design techniques (equivalence partitioning, boundary value analysis, decision tables, state transitions), test estimation, static testing reviews, and test process management. Includes Playwright automation guidance for test implementation.
playwright-best-practices
by currents-dev
Provides comprehensive guidance for writing, debugging, and maintaining Playwright tests in TypeScript. Use when writing Playwright tests, fixing flaky tests, debugging failures, implementing Page Object Model, configuring CI/CD, optimizing performance, mocking APIs, handling authentication or OAuth, testing accessibility (axe-core), file uploads/downloads, date/time mocking, WebSockets, geolocation, permissions, multi-tab/popup flows, mobile/responsive layouts, touch gestures, GraphQL, error handling, offline mode, multi-user collaboration, third-party services (payments, email verification), console error monitoring, global setup/teardown, test annotations (skip, fixme, slow), project dependencies, security testing (XSS, CSRF, auth), performance budgets (Web Vitals, Lighthouse), iframes, component testing, canvas/WebGL, service workers/PWA, test coverage, i18n/localization, Electron apps, or browser extension testing. Covers E2E, component, API, visual, accessibility, security, Electron, and extension testing.
authentication-patterns
by rohitg00
Authentication and authorization patterns including OAuth2, JWT, RBAC, session management, and PKCE flows
rust-systems
by rohitg00
Rust systems programming patterns including ownership, traits, async runtime, error handling, and unsafe guidelines
monitoring-observability
by rohitg00
Monitoring and observability with OpenTelemetry, Prometheus, Grafana dashboards, and structured logging
sapui5-linter
by secondsky
Use this skill when working with the UI5 Linter (@ui5/linter) for static code analysis of SAPUI5/OpenUI5 applications and libraries. This skill should be used when: (1) Setting up UI5 Linter in a project for the first time, (2) Configuring linting rules and ignore patterns for UI5 codebases, (3) Running the linter to detect deprecated APIs, global variable usage, CSP violations, or manifest issues, (4) Using autofix to automatically correct deprecated API usage, global references, event handlers, and manifest properties, (5) Troubleshooting linting errors or warnings in UI5 code, (6) Integrating UI5 Linter into CI/CD pipelines or pre-commit hooks, (7) Preparing UI5 projects for migration to UI5 2.x by identifying compatibility issues, (8) Understanding and resolving specific linting rules like no-deprecated-api, no-globals, async-component-flags, or manifest validation rules. The skill covers all 19 linting rules, comprehensive autofix capabilities and limitations, CLI options, configuration patterns, performance optimization, and integration with development workflows. Keywords: SAPUI5, OpenUI5, UI5 Linter, @ui5/linter, static analysis, deprecated APIs, global variables, CSP, manifest.json, ui5.yaml, ESLint, pre-commit hooks, GitHub Actions, CI/CD, Node.js, TypeScript, XML, JSON, HTML, YAML, OData v2/v4, async, event handlers, jQuery, autofix, performance optimization, 19 linting rules, no-deprecated-api, no-globals, no-async-component-flags, manifest-v2, UI5 2.x migration
learning-medusa
by medusajs
Load automatically when user asks to learn Medusa development (e.g., "teach me how to build with medusa", "guide me through medusa", "I want to learn medusa"). Interactive guided tutorial where Claude acts as a coding bootcamp instructor, teaching step-by-step with checkpoints and verification.
codex-autoresearch
by leo-lilinxiao
"Autonomous long-running iteration for Codex CLI. Use when the user wants Codex to plan or run an unattended improve-verify loop toward a measurable or verifiable outcome, especially for overnight runs; it also covers repeated debugging, fixing, security auditing, and ship-readiness workflows. Do not use for ordinary one-shot coding help or casual Q&A."
accessibility-wcag
by rohitg00
Web accessibility patterns for WCAG 2.2 compliance including ARIA, keyboard navigation, screen readers, and testing
pr
by Automattic
INVOKE THIS SKILL before creating any PR to ensure compliance with branch naming, changelog requirements, and reviewer assignment.
gcc
by mohitmishra786
GCC compiler skill for C/C++ projects. Use when selecting optimization levels, warning flags, debug builds, LTO, sanitizer instrumentation, or diagnosing compilation errors with GCC. Covers flag selection for debug vs release, ABI concerns, preprocessor macros, profile-guided optimization, and integration with build systems. Activates on queries about gcc flags, compilation errors, performance tuning, warning suppression, or cross-standard compilation.
make
by mohitmishra786
GNU Make skill for C/C++ build systems. Use when writing or debugging Makefiles, understanding pattern rules and automatic dependency generation, managing CFLAGS/LDFLAGS, converting ad-hoc compile commands into maintainable Makefiles, or diagnosing incremental build issues. Activates on queries about Makefiles, make targets, pattern rules, phony targets, dependency tracking, recursive make, or make errors.
strace-ltrace
by mohitmishra786
strace and ltrace skill for system call and library call tracing. Use when a binary behaves incorrectly without crashing, diagnosing file-not-found errors, permission failures, network issues, or unexpected library calls by tracing syscalls and library function calls. Activates on queries about strace, ltrace, syscall tracing, library interception, ENOENT, EPERM, strace -e, or diagnosing binary behaviour without a debugger.
backend-patterns
by WorldFlowAI
Backend architecture patterns, API design, database optimization, and server-side best practices for Node.js, Express, and Next.js API routes.
analyzing-time-series
by https-deeplearning-ai
Comprehensive diagnostic analysis of time series data. Use when users provide CSV time series data and want to understand its characteristics before forecasting - stationarity, seasonality, trend, forecastability, and transform recommendations.
analyzing-time-series
by https-deeplearning-ai
Comprehensive diagnostic analysis of time series data. Use when users provide CSV time series data and want to understand its characteristics before forecasting - stationarity, seasonality, trend, forecastability, and transform recommendations.