langsmith-fetch
Debug LangChain and LangGraph agents by fetching execution traces from LangSmith Studio. Use when debugging agent behavior, investigating errors, analyzing tool calls, checking memory operations, or examining agent performance. Automatically fetches recent traces and analyzes execution patterns. Requires langsmith-fetch CLI installed.
uv-package-manager
Master the uv package manager for fast Python dependency management, virtual environments, and modern Python project workflows. Use when setting up Python projects, managing dependencies, or optimizing Python development workflows with uv.
write-unit-tests
Writing unit and integration tests for the tldraw SDK. Use when creating new tests, adding test coverage, or fixing failing tests in packages/editor or packages/tldraw. Covers Vitest patterns, TestEditor usage, and test file organization.
paper-polish
This skills helps agents to review and polish research papers written in LaTeX, focusing on writing clarity, grammar, LaTeX best practices, and document structure.
python-packaging
Create distributable Python packages with proper project structure, setup.py/pyproject.toml, and publishing to PyPI. Use when packaging Python libraries, creating CLI tools, or distributing Python code.
read-repo-references
Learn from reference materials and prior art in the references/ directory
senior-data-scientist
World-class data science skill for statistical modeling, experimentation, causal inference, and advanced analytics. Expertise in Python (NumPy, Pandas, Scikit-learn), R, SQL, statistical methods, A/B testing, time series, and business intelligence. Includes experiment design, feature engineering, model evaluation, and stakeholder communication. Use when designing experiments, building predictive models, performing causal analysis, or driving data-driven decisions.
temporal-python-testing
Test Temporal workflows with pytest, time-skipping, and mocking strategies. Covers unit testing, integration testing, replay testing, and local development setup. Use when implementing Temporal workflow tests or debugging test failures.
testing-python
Write and evaluate effective Python tests using pytest. Use when writing tests, reviewing test code, debugging test failures, or improving test coverage. Covers test design, fixtures, parameterization, mocking, and async testing.
analyze-ci
Analyze failed GitHub Action jobs for a pull request.
code-change-verification
Run the mandatory verification stack when changes affect runtime code, tests, or build/test behavior in the OpenAI Agents Python repository.
code-reviewer
Comprehensive code review skill for TypeScript, JavaScript, Python, Swift, Kotlin, Go. Includes automated code analysis, best practice checking, security scanning, and review checklist generation. Use when reviewing pull requests, providing code feedback, identifying issues, or ensuring code quality standards.
docs-review
Review documentation changes for compliance with the Metabase writing style guide. Use when reviewing pull requests, files, or diffs containing documentation markdown files.
docstring
Write docstrings for PyTorch functions and methods following PyTorch conventions. Use when writing or updating docstrings in PyTorch code.
github-actions-templates
Create production-ready GitHub Actions workflows for automated testing, building, and deploying applications. Use when setting up CI/CD with GitHub Actions, automating development workflows, or creating reusable workflow templates.
dotnet-best-practices
Comprehensive .NET development guidelines covering error handling, async patterns, type design, database performance, API design, DI, architecture, serialization, performance optimization, logging, and testing. Contains 100+ rules prioritized by impact to guide code reviews and automated refactoring.
standards-accessibility
Build accessible user interfaces using semantic HTML, proper ARIA attributes, keyboard navigation, color contrast, and screen reader compatibility. Use this skill when creating or modifying frontend components, HTML templates, React/Vue/Svelte components, forms, interactive elements, navigation menus, modals, or any UI elements. Apply when working with HTML files, JSX/TSX components, template files, ensuring keyboard accessibility, implementing focus management, adding alt text to images, creating form labels, testing with screen readers, managing ARIA attributes, maintaining color contrast ratios, or building heading hierarchies. Use for any task involving UI accessibility compliance, WCAG standards, or inclusive design patterns.
standards-api
Design and implement RESTful API endpoints following REST principles with proper HTTP methods, status codes, and resource-based URLs. Use this skill when creating or modifying API endpoints, route handlers, controllers, or API configuration files. Apply when working on REST API design, endpoint implementations, API versioning, request/response handling, HTTP method routing (GET, POST, PUT, PATCH, DELETE), query parameter filtering, API rate limiting, or any file that defines API routes such as routes.py, api.js, controllers/, endpoints/, or API documentation files.
standards-components
Design reusable, composable UI components following single responsibility principle with clear interfaces, encapsulation, and minimal props. Use this skill when creating or modifying frontend components in any framework (React, Vue, Svelte, web components) or component files. Apply when working with .jsx, .tsx, .vue, .svelte files in component directories (components/, src/components/, ui/, lib/), defining component props and interfaces, implementing component composition patterns, managing component-level state, creating reusable UI elements (buttons, forms, cards, modals), documenting component APIs, or refactoring components for better reusability and maintainability.
standards-css
Write consistent, maintainable CSS following the project's methodology (Tailwind, BEM, utility classes, CSS modules) with design system adherence and performance optimization. Use this skill when writing or modifying styles, CSS files, utility classes, CSS-in-JS, styled components, or any styling code. Apply when working with .css, .scss, .module.css files, Tailwind utility classes, styled-components, CSS modules, design tokens (colors, spacing, typography), framework-specific styling approaches, optimizing CSS for production, implementing CSS purging or tree-shaking, or avoiding style overrides. Use for any task involving visual styling, layout styling, design system implementation, or CSS organization.
standards-golang
Apply Go development standards including module management, go test testing, gofmt/go vet/golangci-lint code quality, idiomatic error handling, and self-documenting code practices. Use this skill when working with Go backend code, managing dependencies, running tests, or ensuring code quality. Apply when installing packages, writing tests, formatting code, handling errors, organizing imports, or deciding whether to create new files vs. extending existing ones. Use for any Go development task requiring adherence to tooling standards and best practices.
standards-migration
Create and manage database migrations with reversible changes, proper naming conventions, and zero-downtime deployment strategies. Use this skill when creating database migration files, modifying schema, adding or removing tables/columns, managing indexes, or handling data migrations. Apply when working with migration files (e.g., db/migrate/, migrations/, alembic/, sequelize migrations), schema changes, database versioning, rollback implementations, or when you need to ensure backwards compatibility during deployments. Use for any task involving database structure changes, index creation, constraint modifications, or data transformation scripts.
standards-models
Define database models with clear naming, appropriate data types, constraints, relationships, and validation at multiple layers. Use this skill when creating or modifying database model files, ORM classes, schema definitions, or data model relationships. Apply when working with model files (e.g., models.py, models/, ActiveRecord classes, Prisma schema, Sequelize models), defining table structures, setting up foreign keys and relationships, configuring cascade behaviors, implementing model validations, adding timestamps, or working with database constraints (NOT NULL, UNIQUE, foreign keys). Use for any task involving data integrity enforcement, relationship definitions, or model-level data validation.
standards-python
Apply Python tooling standards including uv package management, pytest testing, ruff/basedpyright code quality, one-line docstrings, and self-documenting code practices. Use this skill when working with Python backend code, managing dependencies, running tests, or ensuring code quality. Apply when installing packages, writing tests, formatting code, type checking, adding docstrings, organizing imports, or deciding whether to create new files vs. extending existing ones. Use for any Python development task requiring adherence to tooling standards and best practices.
standards-queries
Write secure, optimized database queries using parameterized queries, eager loading to prevent N+1 problems, and strategic indexing for performance. Use this skill when writing SQL queries, ORM queries, database interactions, or optimizing data fetching logic. Apply when working with query files, repository patterns, data access layers, SQL statements, ORM methods (ActiveRecord, Sequelize, Prisma queries), JOIN operations, WHERE clauses, preventing SQL injection, implementing eager loading or includes, adding query timeouts, wrapping operations in transactions, or caching expensive queries. Use for any task involving database reads, writes, complex queries, query optimization, or data fetching performance.
standards-responsive
Build responsive, mobile-first layouts using fluid containers, flexible units, media queries, and touch-friendly design that works across all screen sizes. Use this skill when creating or modifying UI layouts, responsive grids, breakpoint styles, mobile navigation, or any interface that needs to adapt to different screen sizes. Apply when working with responsive CSS, media queries, viewport settings, flexbox/grid layouts, mobile-first styling, breakpoint definitions (mobile, tablet, desktop), touch target sizing, relative units (rem, em, %), image optimization for different screens, or testing layouts across multiple devices. Use for any task involving multi-device support, responsive design patterns, or adaptive layouts.
standards-testing
Prevent common testing anti-patterns that undermine test effectiveness and code quality by ensuring tests verify real behavior rather than mock behavior, keeping production code free from test-only pollution, and enforcing thoughtful mocking strategies. Use this skill when writing or modifying any test files (.test.ts, .test.js, .spec.ts, _test.py, test_*.py, *_test.go, *_spec.rb), when adding mock objects, stubs, spies, or test doubles to test suites, when considering adding methods or properties to production classes that are only called from test code, when setting up complex test fixtures or test data, when tests are failing and you're tempted to adjust mocks to make them pass, when deciding how to isolate code under test from external dependencies, when implementing dependency injection or test seams, during code reviews when reviewing test implementation and mocking strategies, when refactoring tests that have become brittle or hard to maintain, when test setup code is becoming longer than the actual test assertions, or when choosing between integration tests with real components versus unit tests with mocks.
standards-tests
Write focused tests for core user flows and critical paths with clear test names, behavior-focused assertions, mocked external dependencies, and fast execution, deferring edge case testing until explicitly required. Use this skill when creating or modifying test files, writing unit tests, integration tests, or test cases for any feature. Apply when writing test files (test/, __tests__/, spec/, .test.js, .spec.ts, test_*.py), implementing tests for core user workflows, testing critical business logic, mocking external dependencies (databases, APIs, file systems), writing descriptive test names, creating fast-running unit tests, or adding tests at logical completion points of feature development. Use for any task involving test creation, test coverage, test strategy, or test-driven development.
standards-typescript
Apply TypeScript development standards including package manager detection (npm/yarn/pnpm/bun), explicit return types on exports, ESLint/Prettier code quality, one-line JSDoc, and self-documenting code practices. Use this skill when working with TypeScript or JavaScript code, managing dependencies, running tests, or ensuring code quality. Apply when installing packages, writing tests, formatting code, type checking, adding type annotations, organizing imports, or deciding whether to create new files vs. extending existing ones. Use for any TypeScript/JavaScript development task requiring adherence to tooling standards and best practices.
account-identity
Identity and account patterns for src/app/account, including AngularFire Auth integration, signal-first auth state, route guards, and security boundaries; use when touching auth, user/session state, or account UI flows.
angular-ecosystem
Useful Angular libraries, tools, and ecosystem references for Angular development.
angular-fire
Best practices and code patterns for @angular/fire version 20+, integrating Firestore and Auth with Signals and DDD architecture.
angular-material-cdk-animations
Angular Material + CDK + @angular/animations usage patterns aligned with zoneless + signals-first UI and M3 tokens.
architecture-ddd
Domain-Driven Design patterns, concepts, and guidance for software architecture.
capabilitys-layer
Patterns for implementing features under src/app/capabilitys, including presentation/application/domain/integration boundaries, NgRx Signals stores, event-driven communication, and Angular 20 template rules; use when adding or changing a capability.
centralized-state-distributed-behavior
Apply centralized state + distributed behavior to a change: choose the single source of truth, keep writes through explicit commands, and place behavior in the correct owning layer.
change-management
Keep interfaces stable and changes reviewable; includes ADR-lite guidance and deprecation/deletion checks.
cohesion-coupling-review
Review a proposed change for high cohesion/low coupling; recommends the smallest boundary-safe refactor (ownership, minimal public surface, no reach-in imports).
core-design-principles
Apply Black-Tortoise design principles (Occam, cohesion/coupling, tool-first assembly, explicit boundaries, deletion-friendly evolution) to a concrete change request; use as a pre-flight checklist before writing code.
d3-visualization
D3 ecosystem guidance for designing and implementing interactive charts/diagrams in Angular (signals-first, accessible, performant).
dependency-supply-chain
Change discipline for adding/upgrading dependencies; keeps diffs small, avoids unnecessary packages, and preserves deletion-friendly architecture.
design-for-deletion
Apply 'design for deletion' to a change: define the deletion path, avoid cross-context entanglement, and keep shared additions minimal and enduring.
e2e-playwright
Best practices for E2E testing with Playwright, focusing on Angular 20, Firebase Emulators, and Architecture Guards.
eventing-hub
Event-sourcing and EventBus directives for Black-Tortoise, covering structured event schemas, append-before-publish flow, causality/id rules, and safe subscribers; use when touching src/app/eventing, EventBus, or any event handlers/projections.
evolution-maintainability
Apply evolution & maintainability principles to a change: keep interfaces minimal, improve ownership/naming, prefer deletion-friendly refactors, and align with quality gates.
explicit-boundaries
Enforce explicit boundaries in a change: place code in the right layer, keep capability isolation, use ports/adapters and events, and align with architecture gate rules.
firebase-platform
Firebase services, platform guides, and tips for integration with Angular projects.
integration-layer
Infrastructure and integration patterns for src/app/integration, including Firebase/AngularFire usage, Data Connect codegen, repository adapters, DTO mapping, and streaming boundaries; use when touching persistence, external APIs, or platform SDKs.
material-design-3
Material Design 3 (Material You) design system knowledge for modern web and Angular applications. Use when implementing Material Design 3 theming, components, typography, color systems, dynamic color, accessibility patterns, or migrating from Material Design 2. Covers design tokens, theming APIs, and Material You principles.
mcp-codacy
Use the Codacy MCP server (@codacy/codacy-mcp) to run static analysis, retrieve findings, and focus remediation on high-signal issues; use when you need code quality feedback aligned with repo gates (lint, build, architecture:gate).
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