code-generation

FastAPI is a modern, high-performance Python web framework for building APIs. It leverages Python type hints and Pydantic for automatic validation, serialization, and OpenAPI documentation generation with async/await support out of the box.

Fastify is a high-performance Node.js web framework focused on developer experience and low overhead. It features JSON Schema validation, a powerful plugin system, lifecycle hooks, and automatic serialization for blazing-fast APIs.

When the user needs to implement feature flags, gradual rollouts, or experiment bucketing. Use when the user mentions "feature flag," "feature toggle," "gradual rollout," "canary release," "percentage rollout," "kill switch," "user bucketing," "experiment assignment," or "dark…

Collect, categorize, and synthesize user feedback from multiple channels into actionable product insights. Use when tasks involve analyzing support tickets, app store reviews, NPS survey responses, social media mentions, user interviews, feature request prioritization, sentiment…

Use fff (Fast File Finder) — a blazing-fast file search tool built in Rust with Node.js bindings, optimized for AI agents and Neovim integration. Supports fuzzy matching, regex, gitignore-aware filtering, and sub-millisecond search across large codebases. Use when tasks involve…

Transcode, convert, edit, and process audio and video with FFmpeg. Use when a user asks to convert video formats (webm to mp4, mkv to mp4), extract audio from video, compress video files, trim or cut clips, concatenate videos, add subtitles, create thumbnails, apply filters,…

Expert guidance for Amazon Q Developer (formerly Fig), the terminal tool that provides IDE-style autocomplete, AI chat, and CLI builder capabilities. Helps developers create custom completion specs, build CLI tools with autocomplete, and configure terminal productivity features.

Interact with the Figma REST API to read design files, export assets, extract components, and pull design tokens programmatically. Use when tasks involve automating design handoff, syncing design tokens to code, exporting icons/images from Figma, or building integrations between…

Organize and rename files based on content analysis. Use when a user asks to sort files into folders, rename files by pattern, organize a messy directory, categorize documents by type or content, deduplicate files, or clean up a downloads folder. Handles smart renaming,…

When the user needs to build file upload functionality for a web application. Use when the user mentions "file upload," "image upload," "upload endpoint," "multipart upload," "presigned URL," "S3 upload," "file validation," "upload to cloud storage," or "accept user files."…

Find and build a community around your product — identify where your users gather, engage authentically, and grow a loyal user base. Use when: building community-led growth, finding early adopters, creating a brand community.

Expert guidance for Firebase, Google's platform for building and scaling web and mobile applications. Helps developers set up authentication, Firestore/Realtime Database, Cloud Functions, hosting, storage, and analytics using Firebase's SDK and CLI.

Convert any website into clean, structured data with Firecrawl — API-first web scraping service. Use when someone asks to "turn a website into markdown", "scrape website for LLM", "Firecrawl", "extract website content as clean text", "crawl and convert to structured data", or…

Find and convert your first 10-100 customers using founder-led sales, community engagement, and early adopter strategies. Use when: launching a new product, acquiring first users, building initial traction before scaling.

Process real-time data streams with Apache Flink. Use when a user asks to build real-time analytics, process event streams with low latency, implement complex event processing, or run stateful stream processing at scale.

FLUX image generation models — Flux Pro, Dev, and Schnell via fal.ai, Replicate, or Black Forest Labs API. Use when generating high-quality or photorealistic images, applying LoRA fine-tuning for custom styles, or building production image generation pipelines.

Recover deleted files and carve artifacts from disk images and memory dumps with Foremost. Use when a user asks to extract files from a raw disk image, recover accidentally deleted photos, pull embedded files out of a CTF blob, or carve artifacts from unallocated space.

Build forms in React with Formik. Use when creating complex forms with validation, multi-step forms, dynamic form fields, or handling form submission with error states.

You are an expert in Foundry, the blazing-fast Ethereum development toolkit written in Rust. You help developers write, test, deploy, and debug Solidity smart contracts using Forge (testing), Cast (CLI interactions), Anvil (local node), and Chisel (Solidity REPL) — with native…

When the user wants to plan, evaluate, or build a free tool for marketing purposes — lead generation, SEO value, or brand awareness. Also use when the user mentions "engineering as marketing," "free tool," "marketing tool," "calculator," "generator," "interactive tool," "lead…

Expert frontend design guidelines for creating beautiful, modern UIs. Use when a user asks to design a landing page, create a dashboard layout, build a modern UI, style a web application, design a hero section, create a responsive layout, implement frontend design patterns, or…

Implement function/tool calling with LLMs — define tools, handle calls, and return results in a loop. Use when building AI agents with tools, letting LLMs interact with APIs or databases, creating agentic workflows, or enabling models to take real-world actions.

Download images and media galleries from websites with gallery-dl. Use when a user asks to download images from Instagram, Twitter/X, Reddit, Pixiv, DeviantArt, Danbooru, Tumblr, Flickr, ArtStation, or other image hosting sites, bulk download image galleries, archive artist…

Expert guidance for Gatus, the lightweight, self-hosted health check and status page tool written in Go. Helps developers set up endpoint monitoring with conditions, alerting, and a beautiful status page — all configured via a single YAML file with no database required.

Google Cloud CLI for managing GCP resources. Use when the user needs to work with Compute Engine, Cloud Storage, Cloud Functions, IAM, GKE, and other Google Cloud services from the terminal.