Browse skills

Jest is a comprehensive JavaScript testing framework built by Meta, designed for zero-configuration testing of JavaScript and TypeScript applications. It provides a complete ecosystem for unit testing, integration testing, and snapshot testing with built-in code coverage, mocking capabilities, and parallel test execution. Jest works seamlessly with React, Node.js, Angular, Vue, and virtually any JavaScript project, making it the most widely adopted testing framework in the ecosystem.

Create compelling job postings with requirements, responsibilities, and qualifications. Use when a user asks to write a job description, create a job posting, draft a job listing, build a role specification, define job requirements, or compose a hiring ad for a position.

Deep research engine covering the last 30 days across 10+ sources -- Reddit, X/Twitter, YouTube, TikTok, HackerNews, Polymarket, Bluesky, and the web. Synthesizes findings into grounded, cited reports. Use when: researching trending topics, competitive intelligence, understanding what people are saying about a subject right now.

Hunter.io API for finding and verifying corporate email addresses by domain. Use when: finding contact emails for a target domain, discovering email naming patterns, verifying whether an email address is deliverable, or bulk-searching emails for lead generation or OSINT.

Internationalize JavaScript apps with i18next. Use when adding translations, handling plurals, loading locale files dynamically, or i18n for React/Vue/Node.

Expert guidance for Ibis, the Python dataframe library that provides a pandas-like API but generates SQL for execution on any backend — DuckDB, PostgreSQL, BigQuery, Snowflake, Spark, and more. Helps developers write analytics code once and run it anywhere without rewriting SQL for each database.

Compare two images visually using Vision AI to identify differences, similarities, and changes. Use when: comparing design mockups vs implementation, visual regression testing, identifying what changed between two versions.

You are an expert in ImageMagick, the powerful command-line tool for creating, editing, compositing, and converting images. You help developers automate image processing pipelines using ImageMagick's `convert`, `mogrify`, `composite`, and `identify` commands — batch resizing, format conversion, watermarking, thumbnail generation, PDF manipulation, and complex image compositing for web applications, print production, and data visualization.

Optimize and transform images with imgix. Use when serving responsive images, implementing image CDN, adding real-time transformations, or optimizing Core Web Vitals with image delivery.

Manage application secrets and environment variables with Infisical — open-source secrets management platform. Use when someone asks to "manage secrets", "Infisical", "centralize environment variables", "secrets manager", "replace .env files", "rotate API keys", or "sync secrets to CI/CD". Covers secret storage, team sharing, auto-rotation, CI/CD injection, and Kubernetes integration.

Build interactive CLI prompts with Inquirer.js. Use when creating interactive terminal UIs, multi-step wizards, form-like CLI inputs, or configuration generators with user input.

You are an expert in Instructor, the library for getting structured, validated output from LLMs. You help developers extract typed data from unstructured text using Pydantic models (Python) or Zod schemas (TypeScript), with automatic retries on validation failures, streaming partial objects, and support for OpenAI, Anthropic, Google, and local models — turning LLMs into reliable data extraction engines.

Expert guidance for Ionic, the open-source framework for building cross-platform mobile, desktop, and progressive web apps using web technologies (HTML, CSS, JavaScript/TypeScript). Helps developers build apps with Ionic's UI components, integrate with native device APIs via Capacitor, and deploy to iOS, Android, and web from a single codebase.

Configure Linux firewall with iptables/nftables. Use when a user asks to set up a firewall, block ports, allow specific traffic, configure NAT, or secure a Linux server network.

Istio service mesh for Kubernetes traffic management, security, and observability. Use when the user needs to configure traffic routing, mTLS, circuit breaking, fault injection, or observability for microservices.

Builds and manages Jenkins CI/CD pipelines. Use when the user wants to write Jenkinsfiles, configure declarative or scripted pipelines, set up multibranch pipelines, manage Jenkins agents and nodes, configure shared libraries, integrate with Docker/Kubernetes/cloud providers, set up webhooks and triggers, manage credentials and secrets, or troubleshoot build failures. Trigger words: jenkins, jenkinsfile, jenkins pipeline, jenkins agent, jenkins node, jenkins shared library, jenkins docker, jenkins kubernetes, multibranch pipeline, jenkins credentials, jenkins webhook, jenkins groovy, jenkins blue ocean, jenkins job dsl.

Manage projects, issues, and workflows with Jira Cloud. Use when a user asks to set up Jira projects, create and manage issues, configure workflows, build Jira integrations, automate issue transitions, set up boards (Scrum/Kanban), manage sprints, use Jira REST API v3, create webhooks, build custom JQL queries, configure permissions and schemes, set up automation rules, or integrate Jira with CI/CD pipelines. Covers project administration, issue tracking, agile boards, API automation, and Atlassian Connect/Forge apps.

Build and manage monorepos with Nx. Use when a user asks to set up a monorepo, manage multiple packages/apps, cache builds, run affected tests, or migrate from Lerna.

Build job queues and background worker systems using BullMQ, Celery, or Sidekiq. Use when you need to offload slow tasks from request handlers — email sending, PDF generation, image processing, data exports, or any work that takes more than a few hundred milliseconds. Covers job priorities, concurrency control, scheduled jobs, progress tracking, and graceful shutdown. Trigger words: background job, worker, queue, async task, BullMQ, Celery, cron job, scheduled task, job retry.

Assists with interactive data analysis, visualization, and reproducible research using Jupyter notebooks. Use when building notebooks that combine code with rich output, managing kernels, converting to reports, or parameterizing notebooks for batch execution. Trigger words: jupyter, notebook, jupyterlab, ipynb, nbconvert, papermill.