code-generation

Prefect is a modern workflow orchestration framework for Python data pipelines. Learn to define flows and tasks with decorators, handle retries and scheduling, create deployments, and monitor via the Prefect UI.

Prettier is an opinionated code formatter that enforces a consistent style across your entire codebase. Unlike linters that flag problems for you to fix, Prettier rewrites your code automatically. It supports JavaScript, TypeScript, HTML, CSS, JSON, Markdown, YAML, and many…

When the user wants help with pricing decisions, packaging, or monetization strategy. Also use when the user mentions 'pricing,' 'pricing tiers,' 'freemium,' 'free trial,' 'packaging,' 'price increase,' 'value metric,' 'Van Westendorp,' 'willingness to pay,' or 'monetization.'…

You are an expert in Prisma, the TypeScript ORM with a declarative schema, auto-generated type-safe client, migrations, and studio GUI. You help developers model databases with Prisma Schema Language, generate a fully typed client that catches query errors at compile time, run…

Expert guidance for product discovery, the continuous process of deciding what to build based on evidence rather than opinions. Helps product teams identify assumptions, design experiments, conduct user interviews, build opportunity solution trees, and prioritize what to…

Apply proven mental models to boost personal and team productivity — focus techniques, decision frameworks, and task management principles. Use when: improving personal productivity, making better decisions faster, coaching teams on effective work habits.

Prompt engineering techniques for LLMs — zero-shot, few-shot, chain-of-thought, ReAct, and structured prompting. Use when designing prompts for AI features, improving LLM output quality, building reliable AI pipelines, or getting consistent structured responses from language…

Test and evaluate LLM prompts systematically with Promptfoo — open-source eval framework. Use when someone asks to "test my prompts", "evaluate LLM output", "Promptfoo", "prompt regression testing", "compare LLM models", "LLM evaluation framework", or "benchmark prompts against…

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…

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…

You are an expert in Pusher Channels, the hosted real-time messaging platform. You help developers add live features to applications using pub/sub channels, presence channels for online status, private channels with auth, client events for peer-to-peer, webhooks, and batch…

You are an expert in PydanticAI, the Python agent framework built by the Pydantic team. You help developers create type-safe AI agents with structured outputs, dependency injection, tool definitions, streaming, and model-agnostic design — leveraging Pydantic for validation and…

Validate and serialize data with Pydantic. Use when a user asks to validate API inputs, parse JSON/env config, define data models in Python, serialize objects, or implement data validation with type hints.

Qwik is a resumable web framework that delivers instant-loading applications by eliminating hydration. It serializes application state on the server and lazily loads JavaScript on interaction, making it ideal for edge deployment.

Build messaging systems with RabbitMQ — queues, exchanges, routing, dead-letter queues, delayed messages, priority queues, and RPC patterns. Use when tasks involve task queues, background job processing, inter-service communication, request-reply patterns, or reliable message…

Build accessible UI primitives with Radix UI. Use when creating accessible dropdowns, dialogs, popovers, tabs, tooltips, or building a design system with unstyled, composable components.

Expert guidance for Ragas, the framework for evaluating Retrieval-Augmented Generation pipelines. Helps developers measure and improve the quality of their RAG systems across retrieval accuracy, answer faithfulness, and response relevance.

Ruby on Rails is a full-stack web framework following convention over configuration. It provides ActiveRecord ORM, Action Controller, Action View templates, Action Cable for WebSockets, and generators for rapid application development.

Framework for scaling Python applications from a laptop to a cluster. Includes Ray Core for distributed computing, Ray Serve for model serving, Ray Tune for hyperparameter optimization, and Ray Data for distributed data processing.

Expert guidance for building Raycast extensions — custom commands, views, and integrations for the Raycast launcher on macOS. Helps developers create productivity extensions using React, TypeScript, and Raycast's API for lists, forms, actions, and preferences.

Build accessible UI components with React Aria. Use when creating accessible form controls, implementing ARIA patterns, building design systems, or fixing accessibility issues.

You are an expert in React Email, the library for building responsive HTML emails using React components. You help developers create beautiful, cross-client-compatible email templates with type-safe components, live preview, and integration with email providers (Resend,…

Build performant forms in React with React Hook Form. Use when a user asks to handle form validation, build complex multi-step forms, integrate forms with Zod schemas, or reduce form re-renders in React.

Build smooth 60fps animations in React Native with Reanimated — run animations on the UI thread without JS bridge delays. Use when someone asks to "animate in React Native", "Reanimated", "smooth mobile animations", "gesture animations", "shared element transitions", or "60fps…

You are an expert in React Three Fiber (R3F), the React renderer for Three.js that lets developers build 3D scenes using JSX components. You help teams create interactive 3D websites, product configurators, data visualizations, games, and immersive experiences — using React…