Skill UI

This guide addresses the critical difference between standard Node.js SHA3-256 and the Keccak-256 hash function required by Ethereum. Using the wrong hash function can silently corrupt calculated function selectors, event topics, storage slots, and derived addresses. It provides best practices and code examples for using dedicated libraries (like ethers, viem, web3.js) to ensure correct, Ethereum-compliant hashing in JavaScript and TypeScript environments.

This tool enables deep inspection and validation of web applications by connecting to the browser's DevTools Protocol (MCP). It allows agents to perform tasks like DOM inspection, capturing console logs, monitoring network requests, profiling performance, and taking screenshots in a live environment. Essential for debugging UIs, validating API integrations, and performing end-to-end automated testing.

This skill provides comprehensive interaction with the DeerFlow AI agent platform via its robust HTTP API. It is designed for managing complex, multi-step AI workflows, including deep academic research, code execution, web browsing, and file analysis. Users can initiate and continue conversation threads, manage agent memory, upload documents (PDF, etc.), and delegate complex research tasks to the autonomous agent system.

A comprehensive guide and function for discovering, searching, and securely installing modular agent skills from an open ecosystem. It helps users identify specialized capabilities needed for domains like web development, testing, or DevOps, utilizing the `npx skills` CLI. The skill emphasizes best practices, including checking skill reputation and requiring explicit user confirmation before running code.

Comprehensive guide for implementing Firebase Cloud Messaging (FCM) in Flutter applications. Learn how to set up push notifications across iOS, Android, and Web, manage permissions, handle incoming messages in foreground, background, and terminated states, and properly manage FCM token lifecycles.

A type-safe, generics-first library for implementing ReactiveX streams in Golang. It provides declarative, composable pipelines for handling infinite, asynchronous data sources (like WebSockets or timers) with automatic backpressure, robust error propagation, and full Go context integration. Ideal for building real-time, event-driven architectures.

Defines a premium UI/UX persona that enforces agency-grade typography, textures, and motion choreography, guiding AI to avoid cheap defaults and deliver cinematic, tactile web experiences in varied archetypes.

A robust CLI tool for connecting to Lark/Feishu real-time events. It allows streaming, subscribing, and consuming various events (e.g., IM messages, reactions, meeting updates) as NDJSON output. Ideal for developing Lark bots, building real-time message processors, or implementing long-running streaming webhook handlers, especially in AI agent subprocesses.

Generates professional newsletters by researching topics, curating sources, and formatting Markdown ready for email or web circulation with consistent structure and audience tone.

This skill guides the use of Patrol for writing robust End-to-End (E2E) and integration tests in Flutter. It is essential for validating complex user flows, interactions with native APIs (like permissions or deep links), and ensuring cross-platform consistency across Android, iOS, and Web. It helps capture UI regressions and validates the entire application state.

A deep dive into best practices for optimizing application performance across the entire stack, including frontend rendering, backend logic, and database queries. Learn the systematic workflow—Measure, Identify, Fix, Verify—using core metrics like Web Vitals (LCP, INP, CLS) and techniques to resolve common anti-patterns such as N+1 queries and render-blocking resources. Essential for improving user experience and addressing performance regressions.

Upgrades existing websites and apps to premium quality by auditing typography, color, layout, and UI patterns, then applying targeted tweaks within the current stack without rewrites.