> browse/registry

> chromajs

Manipulate colors with chroma.js — convert between color spaces (RGB, HSL, LAB, LCH), generate palettes and scales, mix and blend colors, check contrast ratios, and build accessible color systems. Use when tasks involve creating color palettes, theming, accessibility checks, or data visualization color scales.

> database-schema-designer

Designs database schemas with proper normalization, indexing, constraints, and tenant isolation patterns. Use when someone needs to create a new database schema, add multi-tenant support, design row-level security policies, or optimize table structures. Trigger words: database schema, table design, RLS, row-level security, foreign keys, indexes, migrations, ERD, data model, normalization.

> dbt

dbt (data build tool) transforms data in your warehouse using SQL SELECT statements. Learn project setup, models, tests, documentation, incremental materializations, and integration with data warehouses like PostgreSQL, BigQuery, and Snowflake.

> deepeval

Expert guidance for DeepEval, the open-source framework for unit testing LLM applications. Helps developers write test cases, define custom metrics, and integrate LLM quality checks into CI/CD pipelines using a pytest-like interface.

> kotlin-multiplatform

Expert guidance for Kotlin Multiplatform (KMP), JetBrains' technology for sharing code between Android, iOS, web, and desktop applications. Helps developers build shared business logic, networking, and data layers in Kotlin while keeping UI native on each platform.

> pandas

Assists with loading, cleaning, transforming, and analyzing tabular data using pandas. Use when importing CSV/Excel/SQL data, handling missing values, performing groupby aggregations, merging datasets, working with time series, or building analysis-ready datasets. Trigger words: pandas, dataframe, csv, groupby, merge, time series, data cleaning.

> ipfs

Store and retrieve files on IPFS (InterPlanetary File System). Use when a user asks to store files in a decentralized way, pin content on IPFS, upload NFT metadata, or use content-addressed storage.

> iron-session

Manage encrypted sessions in Next.js with iron-session. Use for session auth, encrypted cookies, or stateless sessions without a database.

> protobuf

You are an expert in Protocol Buffers (protobuf), Google's language-neutral binary serialization format. You help developers define data schemas with `.proto` files, generate typed code for multiple languages, build efficient APIs with gRPC, and handle schema evolution with backward/forward compatibility — achieving 3-10x smaller payloads and 20-100x faster serialization than JSON.

> puppeteer

Automate browsers and scrape dynamic websites with Puppeteer. Use when a user asks to scrape JavaScript-rendered pages, automate browser interactions, take screenshots of web pages, generate PDFs from URLs, test web UIs, fill out forms programmatically, crawl SPAs, extract data from dynamic sites, automate login flows, or build web scrapers that need a real browser. Covers headless Chrome, page navigation, DOM interaction, network interception, screenshots, PDF generation, and stealth techniques

> railway-deploy

Manage Railway deployments using the CLI. Use when a user asks to deploy to Railway, check deployment status, manage Railway services, set environment variables on Railway, view Railway logs, link a Railway project, add a database on Railway, scale Railway services, manage Railway environments, rollback a Railway deployment, or run commands with Railway env vars. Covers the full deploy lifecycle from project setup to production monitoring.

> realtime-analytics

Build real-time analytics pipelines from scratch. Use when someone asks to "set up analytics", "build a dashboard", "track events in real time", "ClickHouse analytics", "event ingestion pipeline", or "live metrics". Covers event schema design, ingestion services with batching, ClickHouse table optimization, aggregation queries, and dashboard wiring.

> recoil

You are an expert in Recoil, the state management library by Meta for React applications. You help developers manage application state with atoms (shared state units), selectors (derived/async state), and atom families — providing a graph-based state model that integrates naturally with React's concurrent features, avoids unnecessary re-renders, and handles async data fetching as first-class state.

> lovable

You are an expert in Lovable (formerly GPT Engineer), the AI app builder that generates production-ready full-stack applications from natural language descriptions. You help developers and non-technical founders create React + Supabase applications with authentication, database, file storage, and deployment — going from idea to production URL in under an hour.

> restic

Back up and restore data with Restic. Use when a user asks to set up backups, create encrypted backups, back up to S3 or cloud storage, implement a backup strategy, restore files from backup, deduplicate backup storage, schedule automated backups, back up databases or servers, or set up offsite backups. Covers repository initialization, backup/restore operations, snapshot management, pruning, encryption, and multiple storage backends (local, S3, SFTP, B2, Azure, GCS).

> logstash

Configure Logstash for log ingestion, parsing, transformation, and output to Elasticsearch and other destinations. Use when a user needs to build log processing pipelines, write Grok patterns, parse unstructured logs, enrich events, or set up multi-pipeline Logstash deployments.

> scikit-learn

Assists with building, evaluating, and deploying machine learning models using scikit-learn. Use when performing data preprocessing, feature engineering, model selection, hyperparameter tuning, cross-validation, or building pipelines for classification, regression, and clustering tasks. Trigger words: sklearn, scikit-learn, machine learning, classification, regression, pipeline, cross-validation.

> directus

Build backends and APIs with Directus headless CMS. Use when a user asks to create a headless CMS, build a content API without coding, set up a backend admin panel, create REST or GraphQL APIs from a database, manage content with roles and permissions, build a data platform with auto-generated APIs, or replace traditional CMS with a headless solution. Covers data modeling, auto-generated REST/GraphQL APIs, roles/permissions, flows (automation), file storage, and SDK integration.

> kibana

Configure and use Kibana for Elasticsearch data visualization, dashboard creation, and log exploration. Use when a user needs to build dashboards with Lens, write KQL queries, set up data views, create visualizations, or configure Kibana spaces and role-based access.

> ssr-migration

Migrate client-side rendered (CSR) React/Vue applications to server-side rendering (SSR) or static site generation (SSG) using Next.js, Nuxt, or Astro. Use when you need to improve SEO, reduce time-to-first-byte, fix blank page issues for crawlers, or improve Core Web Vitals. Covers incremental adoption, data fetching patterns, hydration debugging, and deployment configuration. Trigger words: SSR, SSG, server-side rendering, static generation, Next.js migration, SEO, hydration, TTFB, Core Web Vi