> browse/registry

> job-stories

Create job stories using the 'When [situation], I want to [motivation], so I can [outcome]' format with detailed acceptance criteria. Use when writing job stories, creating JTBD-style backlog items, or expressing user situations and motivations.

> geomaster

Comprehensive geospatial science skill covering remote sensing, GIS, spatial analysis, machine learning for earth observation, and 30+ scientific domains. Supports satellite imagery processing (Sentinel, Landsat, MODIS, SAR, hyperspectral), vector and raster data operations, spatial statistics, point cloud processing, network analysis, cloud-native workflows (STAC, COG, Planetary Computer), and 8 programming languages (Python, R, Julia, JavaScript, C++, Java, Go, Rust) with 500+ code examples. U

> scvi-tools

Deep generative models for single-cell omics. Use when you need probabilistic batch correction (scVI), transfer learning, differential expression with uncertainty, or multi-modal integration (TOTALVI, MultiVI). Best for advanced modeling, batch effects, multimodal data. For standard analysis pipelines use scanpy.

> sympy

Use this skill when working with symbolic mathematics in Python. This skill should be used for symbolic computation tasks including solving equations algebraically, performing calculus operations (derivatives, integrals, limits), manipulating algebraic expressions, working with matrices symbolically, physics calculations, number theory problems, geometry computations, and generating executable code from mathematical expressions. Apply this skill when the user needs exact symbolic results rather

Audit Node.js applications for security vulnerabilities. Use when reviewing npm dependencies, checking for injection attacks, securing Express/Fastify APIs, implementing auth, preventing prototype pollution, or hardening Node.js deployments.

> Agent Browser

A fast Rust-based headless browser automation CLI with Node.js fallback that enables AI agents to navigate, click, type, and snapshot pages via structured commands.

Production-grade PWA caching with Google Workbox and Vite PWA plugin.

> create-auth-skill

Skill for creating auth layers in TypeScript/JavaScript apps using Better Auth.

> javascript-testing-patterns

Implement comprehensive testing strategies using Jest, Vitest, and Testing Library for unit tests, integration tests, and end-to-end testing with mocking, fixtures, and test-driven development. Use when writing JavaScript/TypeScript tests, setting up test infrastructure, or implementing TDD/BDD workflows.

Spies, stubs, mocks, and fake timers with Sinon.js for JavaScript testing.

> azure-servicebus-ts

Build messaging applications using Azure Service Bus SDK for JavaScript (@azure/service-bus). Use when implementing queues, topics/subscriptions, message sessions, dead-letter handling, or enterprise messaging patterns.

> security-best-practices

Perform language and framework specific security best-practice reviews and suggest improvements. Use when the user explicitly requests security best practices guidance, a security review or report, or secure-by-default coding help. Supports Python, JavaScript/TypeScript, and Go. Do NOT use for general code review, debugging, threat modeling (use security-threat-model), or non-security tasks.

Event streaming with KafkaJS. Producers, consumers, consumer groups, and exactly-once semantics.

> safe-calculator

A safe calculator for mathematical expressions

> azure-search-documents-ts

Build search applications using Azure AI Search SDK for JavaScript (@azure/search-documents). Use when creating/managing indexes, implementing vector/hybrid search, semantic ranking, or building agentic retrieval with knowledge bases.

> nestjs-scheduling

Distributed cron jobs and locking patterns. Use when implementing scheduled tasks or distributed locking patterns in NestJS. (triggers: **/*.service.ts, @Cron, CronExpression, ScheduleModule)

> paypal-integration

Integrate PayPal payment processing with support for express checkout, subscriptions, and refund management. Use when implementing PayPal payments, processing online transactions, or building e-commerce checkout flows.

> azure-private-link

Expert knowledge for Azure Private Link development including troubleshooting, best practices, decision making, architecture & design patterns, limits & quotas, security, and configuration. Use when building, debugging, or optimizing Azure Private Link applications. Not for Azure Virtual Network (use azure-virtual-network), Azure Virtual Network Manager (use azure-virtual-network-manager), Azure VPN Gateway (use azure-vpn-gateway), Azure ExpressRoute (use azure-expressroute).

Distributed tracing and metrics with OpenTelemetry in Node.js applications.

Message queuing with RabbitMQ using amqplib. Task queues, pub/sub, dead letter queues.